Chris Dees wrote:
This one was taken with the 16/2.8 AI-s and I tried to defish it in lIghtRoom.
Although the centre is still very sharp, the edges aren't.
Can you defish it in PhotoShop?
Well, the 16/2.8 AI-s is not that sharp off-center, then your are morphing those already not sharp pixels in a big way, so it's not surprising that the final image isn't sharp.
James Markus wrote:
renal failure...explains why i haven't been feeling well. great docs though.. confident they will restore my kidney function. No bed rest now YEAH. I may get out by Wednesday...I hope! Feeling better than when I got here.
James Markus wrote:
renal failure...explains why i haven't been feeling well. great docs though.. confident they will restore my kidney function. No bed rest now YEAH. I may get out by Wednesday...I hope! Feeling better than when I got here.
jhinkey wrote:
Well, the 16/2.8 AI-s is not that sharp off-center, then your are morphing those already not sharp pixels in a big way, so it's not surprising that the final image isn't sharp.
I have this tutorial bookmarked for a rainy day.
I have not yet tried the technique.
Pretty sure it does but only with the AF fisheyes. It is not adjustable. NightOwl Cat wrote:
I'm trying to remember if Capture NX has a defish built in...
Chris Dees wrote:
This one was taken with the 16/2.8 AI-s and I tried to defish it in lIghtRoom.
Although the centre is still very sharp, the edges aren't.
Can you defish it in PhotoShop?
Fisheye Hemi maps well, but I don't know about edge or corner sharpness. Perhaps if you followed with Piccure it could help.
With hemi I normally only have to cutoff just a tiny bit of the edge. It is just a tiny amount and I prefer to do that because other ones I have used take off too much of the photo anyways. With Hemi I barely lose anything after the correction. I really don't understand how they do it.
LR has a lens profile for the 16/2.8D AF lens. It does a reasonable job defishing the 16/3.5; plus the amount is adjustable. For comparison here is an original fishy image of Lake Quinault Lodge taken with the 16/3.5 together with the same image with the profile applied at 90% for the distortion setting. Sometimes adjusting the distortion correction down a bit helps the corner sharpness since the original pixels aren’t spread out as much. Yet the slight residual barrel distortion doesn’t offend the eye too much. It wouldn’t be acceptable for Architectural Digest, but for my purposes it is OK.
Had some trouble with the yellow background reflecting off the eyes so had to reshoot the face on shot (subject is nearer the background than the 3/4 profile shot above). As a consequence you can see the degradation of the eyes
