Article Index

 

Flare

When used in challanging lightning conditions, the lens fell prone to some flare. The shots below demonstrate what can happen in the worst possible case, when the sun is positioned right outside of the picture frame and sun rays hit the front element at about 60 degrees. Wide open or stopped down, Summicron shows flare, ghosting, color shifts and reduced contrast, basically the full enchilada of artifacts that can exhist. Not particularly encouraging until you remember that the lens has a built-in lens hood. And so when you find yourself shooting in the direction of the sun or other strong light source, just pop out the lens hood and it should help you reduce flare quite significantly. Better yet, recompose and don't shoot in the direction of the sun...

 

 

ISO 100, 1/640, f/2, 35mm (Canon 5DMk2)

ISO 100, 1/50, f/8, 35mm (Canon 5DMk2)

 

 

Vignetting

Like most wide angles, Summicron-R 35mm f2 shows some light falloff, the extent of which actually highly depends on the camera used. On APS-C type cameras with smaller sensors, the light falloff is quite minimal, even at its widest aperture setting. On the other hand, the lens shows quite a noticeable vignetting on full frame bodies, where light falloff reached ~1.2EV at f/2 and then continuously drops with stopped aperture.


 

If you're shooting a light colored scenery, for example a landscape with clear blue skies, you will notice visible darkening around corners. While vignetting might not be a big issue for some users, those of you who want to get rid of it, either do that during post-processing or by setting your in-camera vignetting correction to moderate level.

 

Vignetting @ f/2 - full frame vs 1.6x crop (35mm)
Vignetting @ f/2 - full frame vs 1.6x crop (35mm)

 

Distortion

For a wide angle prime, Summicron-R 35mm f/2 showed fairly low level of distortion. At ~0.8% barrel distortion will not be visible in most real life scenarios and so should not require any correction during post-processing.