I've got a 5D Mark III I use primarily for videos (my hobby). My favorite focal lengths on full frame are 28mm to 135mm so I have 24, 28, 35, 50, 85, and 135mm Nikkor primes, which I'm outfitting with geared fitting focus rings and shimmed adapters. I love older lenses for video because of the bokeh, focus throw, hard stops, and speed for the price. I'm adding a 70-200mm f2.8L in case I need a long lens. I don't care about longer focal lengths usually so I can cover them with a slower zoom. Which leads me to a problem...this camera is much better for stills than for video and my widest EF mount lens is a 50mm f1.8 that's broken. I want to use the 5D for snapshots (pictures of cats, vacation photos, etc.) and maybe the occasional photo that I delude myself into thinking is actually good. So I was thinking of getting the 24-70mm f2.8 since it would be nice for video, too, but the price is ridiculous! How is the 28-135mm as an alternative walkabout lens? Does it have a compatible profile to remove vignetting, distortion, and CA (I shoot JPEG)? It's like $250 used. Is it close enough to the 24-105mm or 24-70mm at normal stops that I can feel okay putting it on my vastly more expensive camera? I can't afford the 24-70mm and I wouldn't use the 24-105mm IS for video because it has too much distortion for my taste, though of course if it were affordable it would be a top choice. Thanks!