Welcome to Delta

In 2021 the Digital Enlarger Lens Test Archive (D.E.L.T.A) outgrew its original home at 16-9.net – and its remit. It continues to expand, and is now the most wide-ranging resource for film-makers and photographers seeking and using enlarger, projector, macro, repro, process and cine lenses to create digital work. Spanning 130 years, Delta collates information about almost 3,500 universally-adaptable lenses, and contains hundreds of unique reviews and articles.

The quick-browse catalogue below orders every lens by manufacturer and can be filtered by category or keyword.

The primary archive tracks generations of lenses with more in-depth information, and ranks hundreds for sharpness and rendition. Please use the main menu and search function to access further articles, pictures and videos.

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agfa-repromaster-213-a

[Agfa] Repromaster 213/9.25
Plasmat repro lens made by Staeble (Ultragon) for Repromaster system. Optimised for 2:1-1:2. AKA Eskofot, Helioprint

agfa-repromaster-80a

[Agfa] Repromaster 80/4
Plasmat repro lens.

85-color-corrected-1

[Boots] 85/2.8 Colour Corrected
Unbranded plastic-barrel lens made in Hong Kong for the Irish-made Boots 2400S and 2400RF 35mm slide projectors. AKA Hanimar 85mm [V2].

zeiss-ikon_super-talon-60b

[Carl] Zeiss Super Talon MC 60/2.8
Multicoated lens for Zeiss Ikon Ikolux / Perkeo slide projectors. Likely AKA Kett Super Talon 60/2.8. Product image by Kamerastore.

zeiss-super-talon-90a

[Carl] Zeiss Super Talon MC 90/2.5
Slide projector lens marked ‘ZEISS IKON SUPER TALON MC’. Multicoated. Likely AKA Zett Super Talon 90/2.5. Optional on Zeiss Perkeo range.

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[Carl] Zeiss Talon 250/4
Multicoated slide projector lens for Zeiss Perkeo series. Available with optional lens support and image field lens.

zeiss-talon_45a

[Carl] Zeiss Talon 45/2.8
Slide projector lens for Perkeo pocket format projectors marked ‘ZEISS IKON’. Single-coated.

zeiss-talon-85a

[Carl] Zeiss Talon 85/2.8 [V1]
Slide projector lens marked ‘ZEISS IKON TALON’. Optional for Perkeo projectors. [V1] is single-coated in plastic barrel. Probably AKA Zett Talon 85/2.8.

zeiss_talon-85-v2a

[Carl] Zeiss Talon 85/2.8 [V2]
Slide projector lens marked ‘ZEISS IKON TALON . . . MC’. Optional for Perkeo projectors. [V2] is multi-coated in metal barrel. Also known in Zeiss catalogue as ‘Talon Speziale’.

sakura-135a

[Konishiroku] Sakura 135/6.3
Rare Japanese enlarger lens, possibly pre-1945, marked “ROKUOH-SHA”. Konishiroku cannot positively be identified as the maker.

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[Konishiroku] Sakura 80/6.3
Rare Japanese enlarger lens, possibly pre-1945. Konishiroku cannot positively be identified as the maker.

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A. Darlot (Paris) 160/3.5
Projector lens. Brass body

travegar-105-v1a

A. Schacht R Travegar 105/3.5 [V1]
Early Munich-manufactured enlarger/macro lens. Silver body. Black nose. Tends to rust.

travegar_105a

A. Schacht R Travegar 105/3.5 [V2]
Updated Ülm-manufactured enlarger/macro lens. Silver body. Black nose. Tends to rust.

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A. Schacht R Travegar 50/3.5
Enlarger lens. f16 version. Possibly made in Munich 1948-1954.

a-schacht-r-travegar-50

A. Schacht R Travegar 50/3.5 [Ulm]
Enlarger lens. Silver body. Black nose. Late period Ulm-produced (1954-1967) f22 version.

travegar_75a

A. Schacht R Travegar 75/3.5
Enlarger lens. Silver body. Black nose. Ulm produced (1954-1967).

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schacht_super-stellar-100-2.5a

A. Schacht Super-Stellar 100/2.5
Slide projector lens. Black plastic body with zebra nose. Likely co-production with Staeble/Wilhelm Will. Images by Forest Sprite.

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A. Schacht Super-Stellar 85/2.5 [V1]
Slide projector lens. Silver metal body with zebra nose. Likely co-production with Staeble/Wilhelm Will.

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A. Schacht Super-Stellar 85/2.5 [V2]
Slide projector lens. All-black barrel. Likely co-production with Staeble/Wilhelm Will.

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A. Schacht Travegar 100/3.3
Zebra bellows lens.

schacht_travegar-50-e

A. Schacht Travegar 50/3.5 [Munich]
Enlarger lens. Silver body. Black nose. Red diamond instead of R marking. Early Munich-produced version.

schacht_travegar-50a

A. Schacht Travegar 50/3.5 [Ulm]
Enlarger lens. Silver body. Black nose. Red diamond instead of R marking. Late Ulm-produced f22 version (low serials).

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A. Schacht Travegon 35/2.8
Enlarger lens. Silver body. Black nose.

travenon_135a

A. Schacht Travenon 135/4.5
Enlarger lens. Silver body. Black nose. Tends to rust.

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A. Schacht Travenon 17/1.4
Cine projector lens. Black body. Silver nose. Image circle < 25mm at infinity.

a-schacht-travenon-85a

A. Schacht Travenon 85/2.8
Slide projector lens. Black body. Zebra nose.

a-schacht-travenon-85-4.5a

A. Schacht Travenon 85/4.5
Enlarger lens. Silver body. Black nose. Sometimes seen fitted to M42 extension tube. Ulm-made models from 1954-1967.

accura-35-a

Accura 35/3.5
Japanese enlarger lens marked Anastigmat ditributed by RH-Div Interphoto USA. Image circle unknown – likely c.30mm.

accura-50-a

Accura 50/3.5 [V1]
Enlarger lens listed in 1976 Popular Photography catalogue supplied by RH-Div Interphoto USA.

accura-50-3d

Accura 50/3.5 [V2]
Enlarger lens listed in 1976 Popular Photography catalogue supplied by RH-Div Interphoto USA. Unserialled Japanese Zebra.

accura-50-v3a

Accura 50/3.5 [V3]
Zebra enlarger lens listed in 1976 Popular Photography catalogue supplied by RH-Div Interphoto USA. Marked F=2″.

accura-75-3.5-v1f

Accura 75/3.5 [V1]
Enlarger lens marked Anastigmat listed in 1976 Popular Photography catalogue as supplied by RH-Div Interphoto USA.

accura-75-3.5-v2c

Accura 75/3.5 [V2]
Enlarger lens marked Anastigmat listed in 1976 Popular Photography catalogue as supplied by RH-Div Interphoto USA.

accura-50-dia-lite-c

Accura Dia-Lite 50/3.5
Enlarger lens listed in 1976 Popular Photography catalogue supplied by RH-Div Interphoto USA.

accura-dialite-75-a

Accura Dia-Lite 75/3.5
Japanese zebra enlarger lens marketed by RH-Div Interphoto USA.

accura-dialite-90-d

Accura Dia-Lite 90/4.5
Japanese enlarger lens distributed by RH-Div Interphoto USA.

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Accura Preset 75/3.5
Enlarger lens listed in 1976 Popular Photography catalogue supplied by RH-Div Interphoto USA.

aetna-75-a

Aetna 75/3.5
Appears to be an early version of the Japanese-made Coligar with f22 minimum aperture: AKA Perfex, Prinz, Soligor enlarger lenses.

aetna-actinar-105-a

Aetna Actinar 105/4.5
Japanese-made enlarger lens distributed by Aetna Optix (later BKA).

aetna-actinar-135-a

Aetna Actinar 135/4.5
German-made all-silver lens marked with red Double-H, distributed by Aetna Optix (later BKA) for Exakta bellows mount. Also fitted to Mirrorscope. Perhaps made by Steinheil.

aetna-actinar-75-a

Aetna Actinar 75/3.5
Japanese-made zebra lens distributed by Aetna Optix (later BKA) originally as a wide angle for the Optika IIa (Rittreck) 6×9 SLR camera. See also Macro Actinar.

aetna coligar 105mm f4

Aetna Coligar 105/4.5
Japanese-made enlarger lens sometimes marked Aetna Optix. AKA Perfex, Prinz, Soligor, Ampex, etc.

aetna-coligar-25-a

Aetna Coligar 25/3.5
Japanese-made enlarger lens sometimes marked Aetna Optix. AKA Perfex, Prinz, Soligor, Ampex, etc. Sub-30mm image circle.

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Aetna Coligar 35/3.5
Japanese-made enlarger lens sometimes marked Aetna Optix. AKA Perfex, Prinz, Soligor, Ampex, etc. 30mm image circle.

aetna-coligar-50-v1-d

Aetna Coligar 50/3.5 [V1]
Japanese-made enlarger lens sometimes marked Aetna Optix. Black body with red-dot aperture mark; silver nose and mount. AKA Perfex, Prinz, Soligor, Ampex, etc.

aetna_coligar

Aetna Coligar 50/3.5 [V2]
Japanese-made enlarger lens sometimes marked Aetna Optix. AKA Perfex, Prinz, Soligor, Ampex, etc.

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Aetna Coligar 75/3.5
Japanese-made enlarger lens sometimes marked Aetna Optix. AKA Perfex, Prinz, Soligor, Ampex, etc.

aetna-coligar-90-b

Aetna Coligar 90/4.5
Japanese-made enlarger lens sometimes marked Aetna Optix. Silver mount and nose; black body and fascia. AKA Perfex, Prinz, Soligor, Ampex, etc.

Macro-Actinar-placefiller

Aetna Macro Actinar 25/3.5
Japanese-made lens for Optika IIa (Rittenreck) 6×9 SLR camera. Also used as bellows and enlarger lens – probably AKA Aetna Coligar.

Macro-Actinar-placefiller

Aetna Macro Actinar 50/3.5
Japanese-made zebra lens for Optika IIa (Rittenreck) 6×9 SLR camera. Also used as bellows and enlarger lens – probably AKA Aetna Coligar.

Macro-Actinar-placefiller

Aetna Macro Actinar 75/4.5
Japanese-made zebra lens for Optika IIa (Rittenreck) 6×9 SLR camera. Also used as bellows and enlarger lens – probably AKA Aetna Coligar.

macro-actinar-90-a

Aetna Macro Actinar 90/4.5
Japanese-made lens for Optika IIa (Rittenreck) 6×9 SLR camera. Also used as bellows and enlarger lens – probably AKA Aetna Coligar.

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AG Optical Trionar 152/3.5
Slide projector lens marked TDC Vivid 6” Anastigmat. Chrome/brass body.

agfa-105672-a

Agfa 105,672/4.5
Agfa ‘M-Series’ lens of unknown application, likely intended for operation under red light (hence the ‘,672’ [nm] designation). Fascia marked ‘n.M.2510F’ which may be serial or model designation.

Agfa_77-9mm_F4-5_001

Agfa 77.9/4.5
Solagon-like industrial/enlarger lens fitted to UniRax II enlarger. Packaging marked ‘For Personal Use’. Probably optimised for UV.

Agfa_MSC_varifocal_lenses

Agfa 8506 / 121
Fixed aperture varifocal lens fitted to MSC Series minilabs, optimised for 1.7-2.4x magnification.

agfa-8506-122-1607a

Agfa 8506 / 122
Fixed aperture varifocal lens fitted to MSC Series minilabs, optimised for 2.3-3.1x magnification.

agfa-8506-123a2

Agfa 8506 / 123
Fixed aperture varifocal lens fitted to MSC MiniLabs and optimised for 1.7-2.4x magnification.

agfa-minilab-d3-a

Agfa 8508 / 370
Variable aperture printer controller lens for Agfa d-3 minilabs. Without close-up lens has 55mm front thread and weighs 427g. Focal length and aperture measured (unmarked).

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Agfa Agolar 85/2.5
Slide projector lens with metal body (silver).

agfa_agolon_90

Agfa Agolon 90/2.5
Multicoated 35mm slide projector lens. Made in Germany.

agfa-agomar-100-2-5-b

Agfa Agomar 100/2.5 [V1]
Slide projector lens. Silver metal barrel. Fitted to 1960’s era Diamator-S model.

agfa-agomar-100-a2

Agfa Agomar 100/2.5 [V2]
Slide projector lens. Silver body. Fitted to 1960’s era Diamator series. Likely identical, optically, to [V1].

agfa-karator-u_agomar_100_2.8

Agfa Agomar 100/2.8 [V1]
Slide projector lens fitted to Agfa Karator U. Marked ‘Agfa Projectionsobjektiv’.

agomar_150_2.8-v1f

Agfa Agomar 150/2.8 [V1]
Fitted to Agfa Karator U medium format slide projector. Marked ‘Agfa Projektionsobjektiv’.

agfa-agomar-150-a

Agfa Agomar 150/2.8 [V2]
Fitted to Agfa Karator 77 medium format slide projector. Silver body. Black nose.

agomar_150_3.2a

Agfa Agomar 150/3.2
Fitted to Agfa Karator U medium format slide projector. Marked ‘Agfa Projektionsobjektiv’.

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Agfa Agomar 60/2.8
Slide projector lens. Silver body AKA Reflecta Agomar.

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Agfa Agomar 70-120/2.8
Multicoated zoom projector lens

agfa_agomar-75-a

Agfa Agomar 75/2.8
Slide projector lens marked ‘Agfa Jgomar’ fitted to Agfa Karator II. Appears to be serialled, but more likely the number applies to the projector.

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Agfa Agomar 85-150/4
Slide projector zoom lens. AKA Reflecta Agomar.

agfa_agomar_2.5c

Agfa Agomar 85/2.5 [V1]
Silver metal barrel lens with black nose fitted to Agfa Opticus 35mm slide projectors. Single coated.

agfa_agomar_2.5d

Agfa Agomar 85/2.5 [V2]
Silver metal barrel lens fitted to 1960s Agfa Diamator H and M 35mm slide projectors.

agfa-agomar-85-v1d

Agfa Agomar 85/2.8 [V1]
Slide projector lens with black plastic barrel fitted to Agfa CP44.

agfa_agomar_85-2.8_v4a

Agfa Agomar 85/2.8 [V2]
Slide projector lens with black plastic barrel fitted to Agfa Diamator 100.

agfa_agomar-85a

Agfa Agomar 85/2.8 [V3]
Slide projector lens fitted to Agfacolor 50, AKA Reflecta Agomar. Aperture unmarked (estimated).

agfa-agomar-85-v3-a

Agfa Agomar 85/2.8 [V4]
Slide projector lens AKA Reflecta Agomar. Fitted to later Diamator 1500.

agfa_agomar-85-3.5

Agfa Agomar 85/3.5
Slide projector lens fitted to Agfa Opticus 100.

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Agfa Agomar 90/2.4
Slide projector lens. Silver body AKA Reflecta Agomar, Braun Ultralit. Multicoated. Awarded 3/5 for image quality by Chasseur d’Images magazine.

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Agfa Agomar 90/2.8
Slide projector lens AKA Wetzlar, and Reflecta Agomar Multicoated.

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Agfa Color-Agolar 250/4.5
Slide projector lens. Black body

agolar_60-b

Agfa Color-Agolar 60/2.8
Six-element lens for Agfacolor 250 Series. Black plastic barrel. [Cat 4874/100].

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Agfa Color-Agolar 85/2.8
Slide projector lens. Black body

agfa-color-agolon90-c

Agfa Color-Agolon 90/2.5
Single coated 35mm slide projector lens fitted to Agfacolor 250 Series (including AV, AVD, S and D models). Metal body. Black plastic nose. Made in Germany. [Cat 4875/100].

agfa-color-agomar-45b

Agfa Color-Agomar 45/2.8
Black plastic-barrel lens marked Color-Agomar fitted to Agfa Pocket 35mm slide projector.

agfa-105-4.8a

magnolar-105-c

Agfa Color-Magnolar 105/4.5
Heliar lens made by/with Steinheil. Fitted to Agfa Varioscop enlargers. Silver body, black nose. Optically identical to Agfa Magnolar [V2].

agfa_color_magnolar60c

Agfa Color-Magnolar 60/4.5
Heliar lens made by/with Steinheil. Fitted to Agfa Varioscop enlargers. Silver body, black nose. All upper-case lettering indicates five-element version identical to Agfa Magnolar [V2].

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Agfa Color-Magnolar 75/4.5
Fitted to Agfa Varioscop enlarger.

agfa_color_magnolar2_105

Agfa Color-Magnolar II 105/4.5
Upgraded version of the Steinheil-made Color-Magnolar fitted to Agfa Varioscop enlargers. Heliar construction, improved coatings.

Agfa Color-Magnolar II 60/4.5
Upgraded version of the Steinheil-made Color-Magnolar fitted to Agfa Varioscop enlargers. Heliar construction, improved coatings.

Agfa Color-Solagon DI 70/4.5
Premier six-element ‘C-Series’ lens fitted to various industrial Agfa imaging devices, including enlargers. Probably rare earth glass. Perhaps made by/with Steinheil.

Agfa Color-Solagon DII 60/4.5
Six-element premier ‘E-Series’ lens fitted to the Agfa Recording Camera and other industrial imaging systems. Standard lens (labeled ‘Solagon DII’ only) for Varioscop 35/44 enlarger in 1962. Rare-earth glass.

Agfa Color-Solagon DII 80/4.5
Six element premium ‘B-Series’ fitted to various industrial imaging devices, including enlargers. No aperture markings. Fine-pitch (0.5mm) thread. Probably rare-earth glass made by/with Steinheil.

Agfa Color-Solagon DII 90/4.5
Premum lens fitted to industrial imagers, including enlargers. Aperture markings on reverse. Probably rare-earth glass. Early serials have black nose; later models all-silver.

Agfa Color-Solagon-D 60/4.5
Rare six-element enlarger lens from Agfa’s premier Color-Solagon line. Silver metal body, black fascia ring.

Agfa Colostar 150/4.5
German enlarger lens. Silver metal body with long thread. Commonly mis-spelt ‘Colorstar’.

agfa_colostar_n_100-c

Agfa Colostar N 100/4.5
‘F-Series’ Heliar lens fitted to Colormator rollhead printers, Variograd belt copying machines and other Agfa industrial imagers. Optimised for 3.5x magnification. Low serial, all silver versions have same tooling/casing as Steinheil enlarger lenses. High serial versions have large black aperture rings. Commonly mis-spelt ‘Colorstar’. No aperture markings.
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Acknowledgements: The DELTA project wouldn’t have been possible with the naysaying of experienced lens collectors; the death of film; the opposition of my wife; defrauding by shady eBay sellers and dodgy Japanese auction agents; the re-branders; the same 50/3.5 seen in a thousand guises; the entirely unhelpful attitide of extant manufacturers who jettisoned their history without a backward glance (I would specially like to mention Schneider, Rodenstock and Agfa); the disregard of librarians and archivists who no longer view photographic publications as important; the museums that have failed to digitise their collections and who  refused to grant permission to grant access to relevant material rotting unseen in their basements; the sheer bloody-mindedness of Agfa serial numbers; the arrogance of those who have previously written about alt.lenses and imagine their sayings to be unalterably definitive, despite being patently erroneous;  widespread dementia and death befalling a generation of those with inside knowledge of the industry; the majority of used camera dealers who regard these lenses as pointless relics and have no interest in deploying them as taking lenses and regard their slow-moving stock as an irritation; clueless marketing people devoid of specific product knowledge; an overwhelming majority of photographers apathetic about the benefits and possibilities of alt.lenses; a notable number of publishers who failed to express an interest in a book deal; the army of DIY botchers who took their lenses apart and didn’t know how to put them back together again; a postal system that loses packages as a normal happenstance;  and all the fungus. Against this tide stand we few. You know who you are. Thank you.