{"event":"ecommerce_event","event_name":"view_item","event_category":"browse_catalog","ecommerce":{"items":[{"item_id":"MME4068089","item_category":"photo","item_category2":"no_copyright","item_category3":"standard","item_category4":"mencarini_marcello","item_category5":"not_balown","item_list_name":"search_results","item_name":"wetzlar_germany_leitz_optical_equipment_factory_where_leica_cameras_are_made","item_variant":"undefined"},{"item_id":"MME4068090","item_category":"photo","item_category2":"no_copyright","item_category3":"standard","item_category4":"mencarini_marcello","item_category5":"not_balown","item_list_name":"search_results","item_name":"wetzlar_germany_leitz_optical_equipment_factory_where_leica_cameras_are_made","item_variant":"undefined"},{"item_id":"GRL5895151","item_category":"photo","item_category2":"out_of_copyright","item_category3":"standard","item_category5":"not_balown","item_list_name":"search_results","item_name":"fontanellato_rocca_sanvitale_the_xix_century_optical_chamber_photo","item_variant":"undefined"},{"item_id":"AII135323","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"niceron_jean_francois_1613_46","item_category5":"not_balown","item_list_name":"search_results","item_name":"anamorphosis_oil_on_canvas","item_variant":"undefined"},{"item_id":"CH466673","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"arcimboldo_giuseppe_1527_93","item_category5":"not_balown","item_list_name":"search_results","item_name":"reversible_anthropomorphic_portrait_of_a_man_composed_of_fruit_oil_on_panel","item_variant":"undefined"},{"item_id":"AII135306","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"niceron_jean_francois_1613_46","item_category5":"not_balown","item_list_name":"search_results","item_name":"anamorphosis_oil_on_panel","item_variant":"undefined"},{"item_id":"AII135305","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"niceron_jean_francois_1613_46","item_category5":"not_balown","item_list_name":"search_results","item_name":"anamorphosis_oil_on_panel","item_variant":"undefined"},{"item_id":"UIG5311410","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category5":"not_balown","item_list_name":"search_results","item_name":"an_engraving_depicting_a_method_of_using_a_camera_obscura_as_a_drawing_aid_19th_century","item_variant":"undefined"},{"item_id":"LAL2816866","item_category":"illustration","item_category2":"no_copyright","item_category3":"standard","item_category4":"english_school_20th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"anton_van_leeuwenhoek_litho","item_variant":"undefined"},{"item_id":"MOU133233","item_category":"object","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"wit_jacob_de_1695_1754","item_category5":"not_balown","item_list_name":"search_results","item_name":"portrait_of_sir_isaac_newton_1642_1727_oil_and_grisaille","item_variant":"undefined"},{"item_id":"LRI4819893","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"roman_1st_century_bc","item_category5":"not_balown","item_list_name":"search_results","item_name":"trompe_l_oeil_garden_from_the_villa_of_livia_40_20_bc_fresco","item_variant":"undefined"},{"item_id":"CHT200413","item_category":"photo","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"french_school_19th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"phantasmagoria_from_memoires_recreatifs_scientifiques_et_anecdotiques_by_etienne_gaspard_robertson_1","item_variant":"undefined"},{"item_id":"LLM3628854","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"european_school_19th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"concave_mirror_engraving","item_variant":"undefined"},{"item_id":"NGV478922","item_category":"illustration","item_category2":"in_copyright","item_category3":"standard","item_category4":"vasarely_victor_1906_97","item_category5":"not_balown","item_list_name":"search_results","item_name":"optical_composition_1969_screenprint","item_variant":"undefined"},{"item_id":"CHT175003","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"chevalier_charles_fl_1835","item_category5":"not_balown","item_list_name":"search_results","item_name":"the_phenakisticope_with_a_dancing_couple_card_1835_photo","item_variant":"undefined"},{"item_id":"LRI4819896","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"roman_1st_century_bc","item_category5":"not_balown","item_list_name":"search_results","item_name":"trompe_l_oeil_garden_from_the_villa_of_livia_40_20_bc_fresco","item_variant":"undefined"},{"item_id":"DGA2590454","item_category2":"out_of_copyright","item_category3":"standard","item_category5":"not_balown","item_list_name":"search_results","item_name":"opera_glasses_in_ivory_early_1900_20th_century","item_variant":"undefined"},{"item_id":"MAY382095","item_category":"illustration","item_category2":"in_copyright","item_category3":"standard","item_category4":"stella_frank_b_1936","item_category5":"not_balown","item_list_name":"search_results","item_name":"gray_scramble_single_1969_acrylic_on_canvas","item_variant":"undefined"},{"item_id":"LLM3628868","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"european_school_19th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"the_phantasmagoria_engraving","item_variant":"undefined"},{"item_id":"LLM3628876","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"european_school_19th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"diorama_engraving","item_variant":"undefined"},{"item_id":"LLM3628884","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"european_school_19th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"cannon_of_the_palais_royal_engraving","item_variant":"undefined"},{"item_id":"CHT191427","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"japanese_school_19th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"cats_forming_a_cat_s_head_c_1810_colour_woodblock_print","item_variant":"undefined"},{"item_id":"CLG252651","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"mignard_pierre_1612_95","item_category5":"not_balown","item_list_name":"search_results","item_name":"detail_of_the_painting_of_the_interior_of_the_dome_depicting_the_holy_trinity_1663_65_fresco_see_als","item_variant":"undefined"},{"item_id":"XOS1249140","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"gijsbrechts_cornelis_norbertus_1630_1683","item_category5":"balown","item_list_name":"search_results","item_name":"trompe_l_oeil_with_studio_wall_and_vanitas_still_life_1668_oil_on_canvas","item_variant":"undefined"},{"item_id":"LLM3628859","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"european_school_19th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"fresnel_s_lighthouse_apparatus_engraving","item_variant":"undefined"},{"item_id":"UIG5310949","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category5":"not_balown","item_list_name":"search_results","item_name":"an_engraving_depicting_isaac_newton_s_experiment_showing_how_a_prism_refracted_a_beam_of_light_and_b","item_variant":"undefined"},{"item_id":"BEN78484","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"romano_giulio_1492_1546_workshop_of","item_category5":"not_balown","item_list_name":"search_results","item_name":"sala_dei_giganti_detail_of_the_destruction_of_the_giants_by_jupiter_s_thunderbolts_1536_fresco_detai","item_variant":"undefined"},{"item_id":"BCC68545","item_category":"photo","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"chalgrin_jean_francois_therese_1739_1811","item_category5":"not_balown","item_list_name":"search_results","item_name":"round_dining_room_of_the_pavillon_de_musique_built_1781_photo","item_variant":"undefined"},{"item_id":"MFR348317","item_category":"object","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"adams_george_1750_95","item_category5":"not_balown","item_list_name":"search_results","item_name":"18_inch_hadley_quadrant_or_octant_c_1760_wood_brass_glass","item_variant":"undefined"},{"item_id":"CHT276312","item_category":"object","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"italian_school_17th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"the_burning_mirror_of_archimedes_illustration_from_ars_magna_lucis_et_umbrae_by_athanasius_kircher_1","item_variant":"undefined"},{"item_id":"MFR348329","item_category":"object","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"adams_george_1750_95","item_category5":"not_balown","item_list_name":"search_results","item_name":"sextant_brass_wood_glass","item_variant":"undefined"},{"item_id":"EDB51721","item_category":"illustration","item_category2":"no_copyright","item_category3":"standard","item_category5":"not_balown","item_list_name":"search_results","item_name":"thaumatrope","item_variant":"undefined"},{"item_id":"MFI162448","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"delorme_philibert_1505_70","item_category5":"not_balown","item_list_name":"search_results","item_name":"coffered_ceiling_of_the_chapel_c_1522_photo","item_variant":"undefined"},{"item_id":"PWI95100","item_category":"illustration","item_category2":"in_copyright","item_category3":"standard","item_category4":"vieira_da_silva_maria_elena_1908_92","item_category5":"not_balown","item_list_name":"search_results","item_name":"the_great_blue_room_1951_oil_on_canvas","item_variant":"undefined"},{"item_id":"STC201073","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"english_school_19th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"fresco_decoration_in_the_summer_house_of_buckingham_palace_from_the_decorations_of_the_garden_pavili","item_variant":"undefined"},{"item_id":"DMW753273","item_category":"illustration","item_category2":"in_copyright","item_category3":"standard","item_category4":"vasarely_victor_1906_97","item_category5":"not_balown","item_list_name":"search_results","item_name":"vega_wa_3_1968_tempera_on_board","item_variant":"undefined"},{"item_id":"UDK5430513","item_category":"photo","item_category2":"no_copyright","item_category3":"standard","item_category4":"dave_king","item_category5":"not_balown","item_list_name":"search_results","item_name":"pailles_vues_a_travers_un_prisme_drinking_straws_beneath_a_glass_prism_photo_by_dave_king","item_variant":"undefined"},{"item_id":"DGA2590456","item_category2":"out_of_copyright","item_category3":"standard","item_category5":"not_balown","item_list_name":"search_results","item_name":"metal_model_which_illustrates_principle_of_galilean_binoculars","item_variant":"undefined"},{"item_id":"XAM68949","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"bergl_johann_wenzel_1718_89","item_category5":"balown","item_list_name":"search_results","item_name":"the_bergl_apartments_trompe_l_oeil_decoration_painted_by_johann_bergl_18th_century_see_also_68950_ph","item_variant":"undefined"},{"item_id":"LLM6014391","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"english_school_20th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"optical_illusion_litho","item_variant":"undefined"},{"item_id":"JLJ4687130","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"massys_or_matsys_quentin_c_1466_1530","item_category5":"not_balown","item_list_name":"search_results","item_name":"presume_portrait_of_the_doctor_paracelsus_1493_1541_oil_on_canvas","item_variant":"undefined"},{"item_id":"STM620848","item_category":"illustration","item_category2":"in_copyright","item_category3":"standard","item_category4":"kelly_ellsworth_1923_2015","item_category5":"not_balown","item_list_name":"search_results","item_name":"spectrum_ii_1966_67_oil_on_canvas","item_variant":"undefined"},{"item_id":"ALM283442","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"dubreuil_victor_fl_1886_1900","item_category5":"not_balown","item_list_name":"search_results","item_name":"is_it_real_before_1890_oil_on_canvas","item_variant":"undefined"},{"item_id":"WLN69562","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"gossaert_jan_mabuse_c_1472_c_1533","item_category5":"not_balown","item_list_name":"search_results","item_name":"the_children_of_king_christian_ii_of_denmark_norway_and_sweden_1481_1559_john_christina_and_dorothea","item_variant":"undefined"},{"item_id":"BEN107107","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"guercino_giovanni_francesco_barbieri_1591_1666","item_category5":"not_balown","item_list_name":"search_results","item_name":"the_sala_di_aurora_hall_of_the_dawn_detail_of_the_ceiling_depicting_dawn_s_chariot_1621_tempera_on_p","item_variant":"undefined"},{"item_id":"PDA105187","item_category":"illustration","item_category2":"in_copyright","item_category3":"premium","item_category4":"davidson_peter","item_category5":"not_balown","item_list_name":"search_results","item_name":"through_the_window_1981_oil_on_board","item_variant":"undefined"},{"item_id":"LLM5999417","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"english_school_19th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"optics_engraving","item_variant":"undefined"},{"item_id":"UIG5311287","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category5":"not_balown","item_list_name":"search_results","item_name":"an_engraving_depicting_a_fresnel_echelon_or_lighthouse_lens_from_the_front_and_side_at_a_is_a_plano_","item_variant":"undefined"},{"item_id":"UIG5311240","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category5":"not_balown","item_list_name":"search_results","item_name":"an_illustration_of_parallax_showing_the_apparent_displacement_of_the_finger_when_viewed_with_first_o","item_variant":"undefined"},{"item_id":"UIG5311353","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category5":"not_balown","item_list_name":"search_results","item_name":"an_engraving_depicting_a_method_of_using_a_camera_obscura_as_a_drawing_aid_19th_century","item_variant":"undefined"},{"item_id":"FER185334","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"parkin_fl_1794","item_category5":"not_balown","item_list_name":"search_results","item_name":"memento_mori_c_1794_oil_on_oak_panel","item_variant":"undefined"},{"item_id":"LLM2801991","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"english_school_19th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"optician_engraving","item_variant":"undefined"},{"item_id":"XJL62386","item_category":"illustration","item_category2":"in_copyright","item_category3":"standard","item_category4":"le_parc_julio_b_1928","item_category5":"balown","item_list_name":"search_results","item_name":"vibratory_effects_1974","item_variant":"undefined"},{"item_id":"RCW112393","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"gijsbrechts_cornelis_norbertus_1630_1683","item_category5":"not_balown","item_list_name":"search_results","item_name":"still_life_1675_oil_on_canvas","item_variant":"undefined"},{"item_id":"BEN78487","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"romano_giulio_1492_1546_workshop_of","item_category5":"not_balown","item_list_name":"search_results","item_name":"sala_dei_giganti_detail_of_the_destruction_of_the_giants_by_jupiter_s_thunderbolts_1536_fresco_for_d","item_variant":"undefined"},{"item_id":"UIG5311290","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category5":"not_balown","item_list_name":"search_results","item_name":"an_engraving_depicting_the_refraction_of_a_beam_of_light_in_a_bowl_of_water_the_beam_of_light_is_ben","item_variant":"undefined"},{"item_id":"UIG5311294","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category5":"not_balown","item_list_name":"search_results","item_name":"an_engraving_depicting_a_stereoscopic_viewer_with_prismatic_lenses_based_on_brewster_s_design_19th_c","item_variant":"undefined"},{"item_id":"SRM91288","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"lagrenee_anthelme_francois_1774_1832","item_category5":"not_balown","item_list_name":"search_results","item_name":"portrait_of_princess_elena_pavlovna_c_1820_w_c_gouache_on_enamel","item_variant":"undefined"},{"item_id":"LLM3628877","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"european_school_19th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"the_polemoscope_engraving","item_variant":"undefined"},{"item_id":"LLM2806977","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"english_school_19th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"optician_engraving","item_variant":"undefined"},{"item_id":"PVD1682460","item_category":"photo","item_category2":"out_of_copyright","item_category3":"standard","item_category5":"not_balown","item_list_name":"search_results","item_name":"white_cross_ruling_on_a_black_background_optical_illusion_kinetic_art","item_variant":"undefined"},{"item_id":"UIG5311286","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category5":"not_balown","item_list_name":"search_results","item_name":"an_engraving_depicting_a_lighthouse_optics_showing_the_light_source_surrounded_by_eight_fresnel_eche","item_variant":"undefined"},{"item_id":"DGA1257335","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"unknown_artist_20th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"the_optician_s_shop_in_the_late_1800s_advertising_for_the_american_optical_company_1942_by_herbert_m","item_variant":"undefined"},{"item_id":"LLM3628882","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"european_school_19th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"magic_lantern_engraving","item_variant":"undefined"},{"item_id":"LLM3628863","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"european_school_19th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"the_astronomical_telescope_engraving","item_variant":"undefined"},{"item_id":"LLM3628862","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"european_school_19th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"the_compound_microscope_engraving","item_variant":"undefined"},{"item_id":"LLM3628874","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"european_school_19th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"the_camera_obscura_engraving","item_variant":"undefined"},{"item_id":"LLM3628878","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"european_school_19th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"the_goat_trick_engraving","item_variant":"undefined"},{"item_id":"UIG5311293","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category5":"not_balown","item_list_name":"search_results","item_name":"an_engraving_depicting_a_stereoscopic_viewer_with_prismatic_lenses_based_on_brewster_s_design_19th_c","item_variant":"undefined"},{"item_id":"LLM3628873","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"european_school_19th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"how_to_produce_spectres_engraving","item_variant":"undefined"},{"item_id":"LLM3628852","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"european_school_19th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"newton_s_disc_engraving","item_variant":"undefined"},{"item_id":"LLM3628865","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"european_school_19th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"gregorian_telescope_engraving","item_variant":"undefined"},{"item_id":"UDK5430270","item_category":"photo","item_category2":"no_copyright","item_category3":"standard","item_category5":"not_balown","item_list_name":"search_results","item_name":"felt_tip_pen_in_glass_of_water_appearing_to_be_bent_photo_by_stephen_oliver","item_variant":"undefined"},{"item_id":"UIG5307277","item_category":"photo","item_category2":"no_copyright","item_category3":"standard","item_category5":"not_balown","item_list_name":"search_results","item_name":"a_mirage_effect_of_water_appears_on_a_road_crossing_the_negev_desert_in_southern_israel","item_variant":"undefined"},{"item_id":"CMT356806","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"english_school_20th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"carpet_design_w_c_on_paper","item_variant":"undefined"},{"item_id":"LLM3628864","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"european_school_19th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"solar_microscope_engraving","item_variant":"undefined"},{"item_id":"LLM3628872","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"european_school_19th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"the_spectre_an_optical_illusion_engraving","item_variant":"undefined"},{"item_id":"LLM3628851","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"european_school_19th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"disc_of_the_phenakistiscope_engraving","item_variant":"undefined"},{"item_id":"DTR497796","item_category":"illustration","item_category2":"in_copyright","item_category3":"standard","item_category4":"anuszkiewicz_richard_joseph_b_1930","item_category5":"not_balown","item_list_name":"search_results","item_name":"convexity_1966_acrylic_on_canvas","item_variant":"undefined"},{"item_id":"LLM3628869","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"european_school_19th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"the_fantascope_engraving","item_variant":"undefined"},{"item_id":"UIG5307280","item_category":"photo","item_category2":"no_copyright","item_category3":"standard","item_category5":"not_balown","item_list_name":"search_results","item_name":"a_mirage_effect_of_water_appears_on_a_road_crossing_the_negev_desert_in_southern_israel","item_variant":"undefined"},{"item_id":"BBC188962","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"dittmers_gert_d_1671","item_category5":"not_balown","item_list_name":"search_results","item_name":"anamorphic_double_portrait_of_king_frederick_iii_1609_70_and_his_queen_oil_on_canvas_see_188961","item_variant":"undefined"},{"item_id":"LLM3627865","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"english_school_19th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"another_optical_illusion_engraving","item_variant":"undefined"},{"item_id":"SD873825","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"hoogstraten_samuel_van_1627_78","item_category5":"not_balown","item_list_name":"search_results","item_name":"feigned_letter_rack_with_writing_implements_c_1655_oil_on_canvas","item_variant":"undefined"},{"item_id":"LLM3628870","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"european_school_19th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"section_of_the_magic_lantern_engraving","item_variant":"undefined"},{"item_id":"LLM3628856","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"european_school_19th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"magnifying_effect_of_concave_mirrors_engraving","item_variant":"undefined"},{"item_id":"LLM3628875","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"european_school_19th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"effect_of_cut_paper_work_engraving","item_variant":"undefined"},{"item_id":"UIG5307094","item_category":"photo","item_category2":"no_copyright","item_category3":"standard","item_category5":"not_balown","item_list_name":"search_results","item_name":"in_optics_a_prism_is_a_transparent_optical_element_with_flat_polished_surfaces_that_refract_light","item_variant":"undefined"},{"item_id":"XZL148143","item_category":"photo","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"french_school_17th_century","item_category5":"balown","item_list_name":"search_results","item_name":"the_queen_s_staircase_c_1679_photo","item_variant":"undefined"},{"item_id":"LLM3628855","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"european_school_19th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"the_reversal_of_real_images_engraving","item_variant":"undefined"}]}}

{"event":"custom_event","event_name":"view_search_result","event_category":"browse_catalog","keyword":"ottica","search_type":"standard","search_bridgeman_artists":"false","search_mode":"automatic","search_zero_result":"false","search_results":4041,"search_results_page_number":1}