03-14-2011, 02:52 PM
This weekend I had the chance to look at the Tokina 11-16mm (Canon-mount) on a 7D primarily for video purposes, but we observed in live-view, much to our surprise, that there is a noticeable and significant color shift during manual focus from end to end. This lens was a rental and the only copy I've seen so I was wondering if anyone else out there has experienced the same thing, perhaps even with other lenses by Tokina or otherwise. I'll be testing the 12-24mm this Tuesday.
Also wanted to note that the color-balance was set to "K" so there was no auto white balance going on. Perhaps a color-shift may not be the appropriate term as the images appear to go from warm to neutral, meaning it actually seems to be a change in saturation/contrast.
Anyone seen similar behavior on this or other lenses? Honestly I rarely use manual focus but now I'm going to check every lens in my arsenal for this and report back.
-J
Also wanted to note that the color-balance was set to "K" so there was no auto white balance going on. Perhaps a color-shift may not be the appropriate term as the images appear to go from warm to neutral, meaning it actually seems to be a change in saturation/contrast.
Anyone seen similar behavior on this or other lenses? Honestly I rarely use manual focus but now I'm going to check every lens in my arsenal for this and report back.
-J