Hey all,

Sick of me yet? Hope not!

I have a question regarding lens distortion. Now, I'm an avid user of Canon lenses (cos they came with the camera hehehe) but I've been told they distort quite a lot, and also have a fair bit of vignetting.

So, distortion, obviously I know what distortion is, but what does it look like? I've heard all kinds of different distortions... ISO distortion, barrel distortion, lens distortion, etc, but whats the difference and how can I tell?

Now, I've taken photos in RAW and put them in Lightroom and used "lens correction" for the lens I was using and the result was a "less curved" image. I honestly didn't see any curves before, but after using the correction I could see it.

So, vignetting is darkening towards the edges, but what is barrel distortion? I'm not expecting the lenses to be free from distortion, but I'd like to be able to learn to pick it so I can improve etc.