Contax Distagon T* 21mm f/2.8

Tank like construction lovely dampened focus . Und zat zeiss pop zooo kool, excuse the pun. Best wide angle option adapted to ff canon although cannon telephoto are the masters in that realm ,not so in w.a

A little prone to flare ,mustache distortion , a little cool ,but the latter two are corectable in pp

No distortion! Stunning optical performance, though getting a bit softer towards the corners when chromes are scanned in at 4000 dpi, but still FAR better than any other wide angles I've used

No distortion. When you need distortion for accentuated curved horizon, this lens will not provide it, even when you put the horizon towards the margin of the frame

Outstanding in resolution and contrast even at full aperture. I'ver never owned such a perfect wide angle lens

expensive and large filters(82 mm)

Sharp from edge-to-edge. Outstanding at wide-open. Close focusing. It's one of the correct color renderness. What more... it's Zeiss optics

82mm and Metal Hood W-1 are problem. K-94 is very hard to find in market. No hood if I use filter. What should i do

1.Acturally lower disperssion even at field.2.More contrasty than theother contax-wide lenses.3.Images are very flaten!4.So nice for distortion correction among of SLR wide-angle!5.Beautiful colors compare with other's contax-wide lenes!6.Comparing...

When facing at light sources,flare is dangerous!82mm CPL-w is expansive!No useful hood