RayPettit From United Kingdom, joined May 2002, 608 posts, RR: 0 Posted (10 years 6 months 3 weeks 3 days 3 hours ago) and read 1303 times:
I'm currently working on an old slide that has a lot of vignetting, in other words, it has a lot of darkened areas around the 'rim'.
The shot is very full frame showing an airliner on approach against an all blue sky - there is very little space between the nose of the a/c and the slide mount!
I'd like to know the best way of improving this pic so I can put the best version possible up on our site. Has anyone any tips that a relative newcomer can master? Is it possible to copy and paste chunks of the blue sky to overwrite the darkened areas or is this problematical when trying to achieve a natural effect, especially when dealing with smaller, awkward areas that need 'joining up'.
Ckw From UK - England, joined Aug 2010, 530 posts, RR: 18 Reply 1, posted (10 years 6 months 3 weeks 3 days 2 hours ago) and read 1275 times:
Tricky one - without seeing the pic, I can't be sure, but I doubt cloning will provide the solution, as it is highly unlikely the the blue tones are constant across the sky.
I'm assuming the vignetting has produced a gradual darkening towards the edges. The way I would tackle this is to create a mask over the correctly exposed section of the image, with a significant degree of edge feathering. Then try lightening the unmasked protion of the image. The trick will be to get the initial mask right and just the right amount of feathering - a bit of trial and error I'm afraid.
I wouldn't class this as a "beginners" technique, but an extremely useful one, so worth spending a bit of time learning.
Ckw From UK - England, joined Aug 2010, 530 posts, RR: 18 Reply 8, posted (10 years 6 months 3 weeks 2 days 13 hours ago) and read 1155 times:
The vignetting filter in PS is used to ADD a vignette to an image - so not really much help in itself.
However this might be a useful route to create a suitable mask as mentioned above. This can be solved in PS, but it's not easy - as well as masks, you'll have to use layers as well. Cloning on this scale, particularly with film scans is unlikely to be 100% successful, if only because variations in the grain pattern will give the game away. Personally I would find some vignetting preferable to an imperfect fix.
Lennymuir From United Kingdom, joined Oct 2002, 434 posts, RR: 6 Reply 9, posted (10 years 6 months 3 weeks 2 days 5 hours ago) and read 1111 times:
I've like this thread. this is something I've been looking at too since I realised my F707 was suffering with DLS (dark left side) slightly. Now I've got my '707 fixed, I don't use this manipulation now.
I used the 'gradient' feature on GIMP for Windows to lighten the left hand side.
It can be used to counteract the darkening effect of vignetting too.
I'm sure the tool is available on Photoshop, you'll just
have to find it and adapt it similarly.
The first photo below is just black.
The second is the gradient applied only to the left hand side.
(Gradients >> Dialogues >> Opacity 50% >> Offset 50% >> Linear >> Lighten Only)
I've heavily enhanced the effect to show you what it looks like on black.
When you apply this gradient to your vignetted pitcures, go easy and start with
minimal values. If you overdo it, it looks really bad an you'll get hue changes.
The third is how the anti-vignetting gradient would look.
(Gradients >> Dialogues >> Opacity 50% >> Offset 50% >> Radial >> Lighten Only)
Get looking into your photoprogrammes and try it out.
I took me a few days to master it.
RayPettit From United Kingdom, joined May 2002, 608 posts, RR: 0 Reply 10, posted (10 years 6 months 3 weeks 2 days 4 hours ago) and read 1099 times:
Thanks for your responses so far guys,
Quite a heavy subject and probably not one I fancy trying out after a day at work! Certainly not a ten second job.
BTW, I haven't posted my pic here because I'm a bit unsure about the formatting. I can post it in jpeg, but then I always work my pics in TIF and then convert the file format last thing. I think sending in TIF takes me over the 2 hour timeout connection.
I've only got Photoshop 5 (a cut down version at that) by the way.
Tom, its a shame about the dark side of your Panther - still a stunning shot though!