Mamiya / Sekor SX 28mm f/2.8
Posted by Bengt Köhler Sandberg 2012-06-12
f/2.8 to f/16
5 bladed aperure
Infinit to 0.3m (1ft)
Standard 35mm film size (24×36 mm negative)
Analogue B&W film
Great center sharpness even wide open.
Corner softness from f/2.8 to f/5.6 but nothing that severe.
Quite noticeable vignetting wide open.
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f/2.8 - f/4 - f/5.6 - f/8 - f/11 - f/16
Robust and got a nice feel to it.
Nice and contrasty at all apertures.
Really good center sharpness but you have some corner softness and not that great flare.
Another thing is that the aperture ring have a little edge that will hit if you try to use this on most m42 mount adapters.
This will prevent you from focus to infinity.
So you can't use this lens on most modern cameras unless you file down this edge.
Can't be used with most m42 mount adapters.
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Scanner: Plustek OpticFilm 7600i
Film: Rollei Retro 400s
Developer: Kodak D76
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