The importance of cleaning your lenses.
Photographers: hands up who routinely cleans their lenses?
I admit it; I don't. If I spot something really obvious I'll give it a quick wipe with a lens cloth. After processing a recent shot though, I think I'll have to change my ways.
For comparison, here is the shot before and after I'd cloaned out the muck and spots in Photoshop.
The spots are quite visible across the top of the image. I was quite annoyed when I saw it to be honest and I'll make sure I don't make the same mistake again!
