Gatorengineer64
Joined: 26 Oct 2017
Posts: 279
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 Posted: Sat Nov 11, 2017 4:01 pm Post subject: 1948 50F2 Sumitar versus Topcon 50F2 LTM |
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Gatorengineer64 wrote:
I have been working on finding small lenses for an upcoming trip. My personal criteria for these lenses is pretty much sharpness alone. I had earlier tested the Topcon against an early Summicron 50F2, and the Topcon was the better lens, especially considering the approximate 2x price difference. I recently came into a 50 F2 Summitar, which was in with a 90 F2.8, which is what I was going for. Its a 1948 vintage single coat and had assumed that checking against the Topcon would be easy. It was. The Summitar was sharper open, and that continued through F8. Summitar also IMHO has the advantage of better Bokeh (highly subjective).
So, the Summitar will be staying, and going to China next month.....
My 35 quest looks like its going to be answered by a 35 F2.8 Computar, in LTM with a 16.4mm russian spacer. Also now thinking hard about the 35 F2.8 Summarit, as suggested to me by the great folks in the forum. Also going along will be a 135 Canon LTM....
I may try and get some pics up of the comparison, havent figured out how to post images yet.
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A7R4, GFX50R and a bucket of mflenses |
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visualopsins
Joined: 05 Mar 2009
Posts: 10532
Location: California
Expire: 2025-04-11
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| Posted: Tue Dec 12, 2017 2:36 am Post subject: |
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visualopsins wrote:
Need a computer to upload...
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☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮ like attracts like! ☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮
Cameras: Sony ILCE-7RM2, Spotmatics II, F, and ESII, Nikon P4
Lenses:
M42 Asahi Optical Co., Takumar 1:4 f=35mm, 1:2 f=58mm (Sonnar), 1:2.4 f=58mm (Heliar), 1:2.2 f=55mm (Gaussian), 1:2.8 f=105mm (Model I), 1:2.8/105 (Model II), 1:5.6/200, Tele-Takumar 1:5.6/200, 1:6.3/300, Macro-Takumar 1:4/50, Auto-Takumar 1:2.3 f=35, 1:1.8 f=55mm, 1:2.2 f=55mm, Super-TAKUMAR 1:3.5/28 (fat), 1:2/35 (Fat), 1:1.4/50 (8-element), Super-Multi-Coated Fisheye-TAKUMAR 1:4/17, Super-Multi-Coated TAKUMAR 1:4.5/20, 1:3.5/24, 1:3.5/28, 1:2/35, 1:3.5/35, 1:1.8/85, 1:1.9/85 1:2.8/105, 1:3.5/135, 1:2.5/135 (II), 1:4/150, 1:4/200, 1:4/300, 1:4.5/500, Super-Multi-Coated Macro-TAKUMAR 1:4/50, 1:4/100, Super-Multi-Coated Bellows-TAKUMAR 1:4/100, SMC TAKUMAR 1:1.4/50, 1:1.8/55
M42 Carl Zeiss Jena Flektogon 2.4/35
Contax Carl Zeiss Vario-Sonnar T* 28-70mm F3.5-4.5
Pentax K-mount SMC PENTAX ZOOM 1:3.5 35~105mm, SMC PENTAX ZOOM 1:4 45~125mm
Nikon Micro-NIKKOR-P-C Auto 1:3.5 f=55mm, NIKKOR-P Auto 105mm f/2.5 Pre-AI (Sonnar), Micro-NIKKOR 105mm 1:4 AI, NIKKOR AI-S 35-135mm f/3,5-4,5
Tamron SP 17mm f/3.5 (51B), Tamron SP 17mm f/3.5 (51BB), SP 500mm f/8 (55BB), SP 70-210mm f/3.5 (19AH)
Vivitar 100mm 1:2.8 MC 1:1 Macro Telephoto (Kiron)
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