Lens Profile for Nikon 200-500?
I can't seem to find a lens profile for this lens which i use quite often and was wondering if anyone else has the same issue? I think it's been out since like 2015 so kind of hard to believe it's still not in there right?
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You're right - it doesn't seem to have a profile.
But... have you found that there are significant lens corrections needed? You can do them manually if there is no profile, but you may find that you don't often have to. Do you find there is a lot of chromatic aberration, or pincushion/barrel distortion? Or does the lens not much need it?
If you think that there is a need for a profile for it, request it in a support case. The more users who ask for it, the more likely it is that Phase One will think there is a need for it.
Ian0 -
I put in a request (to tech support) for this lens to be included several months ago so the more of us who do this the more chance we stand of having this lens profile included. 1 -
Just to add to Ian's observation, if you look through the list of lenses with profiles for DLSR bodies there are not many that exceed 20mm as a starting point (2 Canon 300mm non-zooms ?)
Wide zoom ranges seem to count - (Sigma 150-500 for example) but any zoom starting at 200mm does not appear unless I missed something.
Canon 100-400 Mk1 is there but then it starts at 100mm.
And of course the most expensive Prime telephoto lenses are not present - presumably either because they have no need of standardized corrections, no one has asked for them or the market is too small to make them influential.
So, as Ian mentioned, what do you find to be wrong with the lens that makes you want some correction ability?
In general correction tends to be something that is mostly applicable it wider angles (or the wide end of a super-zoom).
Grant0 -
Actually it's a really nice lens just sometimes I get a little bit of CA which I have to manually go in and correct. Just kind of weird that there's no profile for it to me as there is for every other lens I've used in the Nikon lineup 0 -
Does a lens profile auto correct for CA?
In my experience CA (or at least CA that would be best corrected) is not an entirely predictable occurrence. Indeed I suspect that it may vary from one lens to the next in many cases.
However if a auto process would have to check for it anyway there would be a processing overhead so one might as well see if it is possible to tick the CA check box in the Lens tool and save that as the default accepting a small processing overhead for the convenience.
I have an old fully manual 600mm lens that is prone to extreme purple fringing but mostly in very specific lighting conditions and circumstances. If auto correction for that might be possible it would be nice to have but realistically I most likely would not want it always applied to all images since at source it is a colour adjustment. Much better that I can apply it as required using a masked local adjustment.
I would be interested to understand whether CA is really consistently problematic in a way that can be effectively and reliably corrected by lens profiling alone.
Grant0 -
Ya know I would say this is an area that LR actually handles better. The CA correction built into the lens profiles seems to work really well and I find I still have some in C1 with the profile applied and constantly have to hit the "analyze" button. Just an extra step, not too big of a deal for the most part but I feel it should be further refined. I normally actually leave the distortion correction off and just like the CA corrected. 0 -
We usually prioritise what lenses to profile from where it makes the most impact for the users. Generally that's in the wider end of the focal ranges, as the distortion is usually worse there.
But we are aware of the longer lenses, especially as the lens-profiles also correct for light fall-off and CA.1
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