tsdevine wrote:
I'm probably not using the right term, as I think color drift is normally associated to sensors. I honestly don't know what to call it.
In terms of what you are looking at, it's just a photo of the sky. The first has a faint magenta cast towards the corners. The second is with a Zeiss UV filter.
-Tim
LBJ2 wrote: tsdevine wrote:
Hard to say it's the lens, or the camera, or a little bit of both. I's usually subtle, but enough that sometimes it makes it hard to color balance a shot. Processed via LR, picked daylight white balance.
LBJ2 wrote: tsdevine wrote:
I notice some color drift towards magenta with the corners on my a7R III (vignetting correction off) with this lens. I notice this behavior on a couple of my other lenses as well, so I guess it could be my camera. I had created cornerfix profile to remove it, but I stumbled on another solution, at least it seems. Zeiss UV filters have a pretty hard cut at 410nm, and it seems to remove the drift I was seeing. Still have to do a little more shooting, but it may be worth considering if anyone else notices this behavior with their camera/lens combo.
While arguably there may be some impact to using the filter, it seems so far to be a fair tradeoff.
Hello Tim. I don't own the 50/2 APO so I can't check for myself. Also, are you able to post a 50/2 APO color drift example if its not too much trouble or send something to me via PM? Thanks in advance and certainly no worries if not convenient. Just curious as I have been looking for good examples of color drifts for reference.
Thank you. Hmmm I am not sure what I am looking at. Without being told color drift, I would have thought some form of vignette. But I don’t think I understand “drift” even though I’ve heard people talk about it. This might be a good lesson for me.
I can see the difference (although I don't have an official name for it either). Are other brands of UV filters similarly efficient at reducing the purple cast in the corners? Like B+W or other serious brands that are also publishing their transmission curves? Then we could compare the diagrams and try to understand what's going on.
tsdevine wrote:
I'm probably not using the right term, as I think color drift is normally associated to sensors. I honestly don't know what to call it.
In terms of what you are looking at, it's just a photo of the sky. The first has a faint magenta cast towards the corners. The second is with a Zeiss UV filter.
-Tim
LBJ2 wrote: tsdevine wrote:
Hard to say it's the lens, or the camera, or a little bit of both. I's usually subtle, but enough that sometimes it makes it hard to color balance a shot. Processed via LR, picked daylight white balance.
LBJ2 wrote: tsdevine wrote:
I notice some color drift towards magenta with the corners on my a7R III (vignetting correction off) with this lens. I notice this behavior on a couple of my other lenses as well, so I guess it could be my camera. I had created cornerfix profile to remove it, but I stumbled on another solution, at least it seems. Zeiss UV filters have a pretty hard cut at 410nm, and it seems to remove the drift I was seeing. Still have to do a little more shooting, but it may be worth considering if anyone else notices this behavior with their camera/lens combo.
While arguably there may be some impact to using the filter, it seems so far to be a fair tradeoff.
Hello Tim. I don't own the 50/2 APO so I can't check for myself. Also, are you able to post a 50/2 APO color drift example if its not too much trouble or send something to me via PM? Thanks in advance and certainly no worries if not convenient. Just curious as I have been looking for good examples of color drifts for reference.
Thank you. Hmmm I am not sure what I am looking at. Without being told color drift, I would have thought some form of vignette. But I don’t think I understand “drift” even though I’ve heard people talk about it. This might be a good lesson for me.
I can see the difference (although I don't have an official name for it either). Are other brands of UV filters similarly efficient at reducing the purple cast in the corners? Like B+W or other serious brands that are also publishing their spectrum cutoff diagrams? Then we could compare the diagrams and try to understand what's going on.
