[MadMathMind]

I have tried to make my own Lightroom lens profiles a few times now and not been successful. Sometimes it fails to detect three good photos. Other times, the vignette profiles aren't a good match. Yet another time, it said the matrix solve failed to converge...

Anyone who's made one have any tips for success? I tried a tripod the first time around, but taking all the images in the same plane as the sensor resulted in the convergence failure. Today I tried handheld with a variety of angles...grid detection failed more often than not. I'm trying to use an 8.5x11 grid. Is that my problem? Should I put the camera on a tripod and just move the grid up and down?

I'm trying to make profiles for the FA50 f/1.7 and F 70-210 f/4-5.6 on the K-5IIs. They are not available elsewhere. I have looked.

[Mikesul]

I would also be very grateful for a source of profiles. They are, indeed, difficult to make.

[MadMathMind]

I'm not trying to get someone to make it for me. I'm trying to learn how to do this. I'm not sure how to take the pictures to get good results.

[Miguel]

I made a successful Lightroom profile a few years ago for a Tokina 12-24mm f4.It was an exercise in patient recordkeeping, but it worked. Of course the official Adobe profile was included in the next version of LR!
Anyway, if I recall correctly, I printed out a 12x18-in version of the included calibration charts. Tripod was mandatory as I could not possibly be consistent with all those required shots and keep a record of my progress while handholding anything besides a pencil. I kept the target locked down and followed the framing with the camera and tripod.

While I'm not in your specific situation, I would think that doing this for a 50mm would be less complicated. Longer zoom too as the inherent distortions of an ultra-wide aren't there. Wish I could give you more pointers.

I'm sure you will succeed eventually.

M

---------- Post added 11-28-14 at 02:04 PM ----------

I would also be very grateful for a source of profiles. They are, indeed, difficult to make.

Have you used the Adobe Lens Profile Downloader application? There is a public database of lens profiles.

M

[Mikesul]

I made a successful Lightroom profile a few years ago for a Tokina 12-24mm f4.It was an exercise in patient recordkeeping, but it worked.

M

Miguel, you are a far more patient man than I am. I will have a look at the public data base.