Help with avoiding Light Streaks

phog · 02-03-2008 11:11am #1

I need some help with avoiding getting light streaks (is this the correct terminology) when taking pictures to stitch, see example [IMG][/img]

, I took this from the hand on a hazy warm evening, as far as I can recall I was once told I could do something to avoid the streaks but foolishly have forgotten.

I rather try to avoid the streaks than try to eliminate them on PS but if you tips for that they'd be welcome too.:)

The full size pic can be viewd here - http://pix.ie/phogpix/album/318719

Thirdfox · 02-03-2008 11:38am

Clone tool in PS is all I can suggest.

Mellor · 02-03-2008 12:03pm

the healing tool should do it also, around the streak it should match the gradient back

Eye2Eye · 02-03-2008 12:24pm

This is usually caused by slightly different exposures in each shot.
When taking shots to stitch I usually start in AV, choose my aperture, and see what shutter speeds I am getting for the shots I want to take - ideally they should close. Then I will switch to manual and dial in the aperature and the average of the shutter speeds to ensure that the exposure settings will be the same for each shot.

Hope this helps - it has improved my photographs but maybe someone else has a better/more correct way.

5uspect · 02-03-2008 12:49pm

If you stitched them in CS3 you should have the layer masks for each layer. You should be able to use those to improve the blend by using a soft edge brush rather than the sharp edges PS uses.

dakar · 02-03-2008 1:32pm

I think white balance has an influence as well. If you pick a preset, eg cloudy or whatever and stick with it for the series, it stops the camera choosing different (albeit subtly different) settings for each shot which become obvious when stitched together.

Forgive me if I'm stating the obvious and it is just exposure difference that is causing the bands!

YogiBear · 02-03-2008 4:35pm

I've never tried stitching myself but Dodge & burn on Photoshop?

phog · 02-03-2008 4:38pm

I'm fairly sure the white balance wasn't changed during the sequence of photos, I'll try Eye2Eye's suggestion of letting the AV pick the initial shutter speed.

Thanks for PS tips to rectify as well.

TJM · 02-03-2008 6:22pm

Autopano will do this automatically. Cracking piece of software.

quilmore · 02-03-2008 7:44pm

yes, try a different software
I've seen that no one is perfect and always one looks better than the rest, but it's not always the same one

challengemaster · 02-03-2008 7:54pm

quilmore wrote: »

yes, try a different software
I've seen that no one is perfect and always one looks better than the rest, but it's not always the same one

Actually, one IS perfect.. I've used it, you cant see _1_ stitch mark anywhere.

PTGui PRO. If doing stitching, its really _THE_ only thing to use if you want perfect.

Help with avoiding Light Streaks

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