<p>Thanks for your response, Robin. Since I already own the Contax version (used on an RTSII for years before digital) and recently found the proper adapter to use it on my Canon 6d, I was curious about users' experiences.<br>
<br />I shot a couple of test images @ f/2 with the Contax 85 and my Canon 85/1.8, and then layered the identical images from each different lens in a photoshop file. Turning off/on each layer, I could easily see how the Canon is definitely sharper at wider apertures, but can't decide if that is an issue for me or not. Most of my work with this focal length is for either family or corporate portraits, and yes, good sharpness on the subject's eye (or eyes) is nice at wide open apertures, but I can't see giving up on the older lens as an option yet. <br /><br /><br>
Thus my interest in the opinions of others. It's a fantastic focal length for portraiture, and I enjoy the idea of improving or changing what I use to shoot them.</p>