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Mamiya / Sekor SX 28mm f/2.8 Reviews
Posted by Bengt Köhler Sandberg 2012-06-12  Specs: Lens: 28mm Aperture: f/2.8 to f/16 5 bladed aperure Focus: Infinit to 0.3m (1ft) Mount: M42 Covers: Standard 35mm film size (24×36 mm negative) Image quality 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.  Download full
size image. Here (up to 5mb)
f/2.8 - f/4 - f/5.6 - f/8 - f/11 - f/16 Bokeh Great! 
Flare
Can get a quite big flare
Digital Pictures taken with a Canon 500D at ISO100 and I used a M42 to Canon mount adapter The aperture ring on this lens unfortunately hits the Canon M42 mount adapter so I couldn't focus to infinity. Bokeh
Build quality Really good! Robust and got a nice feel to it. Conclusion Great lens! 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. Thumbs up: Center sharpness Contrasty Build quality Nice bokeh Thumbs down: Flare Can't be used with most m42 mount adapters. Want to help
me out?
Make my site known by sharing it with your friends and family. This helps and would be really appreciated, thanks!
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