Vinegar Tom wrote:I was inspired to screw on my polariser by this thread and had a wee bash this afternoon. Not that great in overcast weather, and some nasty vignetting with the wide angle. I'll need to try again on a blue-sky day!
Coming back to the vignetting, some things I've read recently.
[*]Choosing thinner filters reduces the effect - some are thinner than others.
[*]You can fix it a bit in photoshop.
[*]You could hold a square / rectangular filter flat onto your lens (not practical mostly).
[*]Wider apertures make it worse apparently, so reduce the aperture (bigger F number) and the vignetting wont be as bad, or will disappear. (I'm reading as I go here now, but that sounds like a good tip, worth testing!)
[*]Full frame wont be as affected as much as cropped frame sensors
Not about vignetting but while its in my mind, a tip I read the other day is for digital photography stick to ND filters and stay away from coloured filters. Camera raw / lightroom / photoshop do colour better than sticking coloured plastic in front of your lens. Coloured filters come into their own for the dark art of film photography. This only works shooting RAW.
Beware of yawning dogs.