Hi folks,
I currently have the Canon 18-135mm IS USM lens as my walk around lens. I am wondering if the Canon 24-105 F4 L lens would be better or not. I know I would be losing a bit in reach, but would the image quality and sharpness be that much better? If I went with the 24-105 lens, I would have to sell the 18-135 lens to help fund the new purchase. BTW, I have a Canon 60D camera.
If anyone has bad both lenses or strong experience with either lens, I would definitely appreciate your advice or opinions.

