On a full frame (5DIII), which one of the following would you recommend for two days in Disneyland? I would like to not carry a camera bag.
Sigma 35 f/1.4
EF 70-200 f/4L IS
EF 100 f/2.8L IS
EF 28-135 f/3.5-5.6 IS
The 28-135 would be the most versatile in terms of focal length, but my least favorite as far as sharpness and aperture.
I love the Sigma 35, but I'm afraid it'll be too wide for a lot of shots.
The 70-200 and 100 are great lenses, but maybe not wide enough?
35 f1.4 easily. You will not have the ability to sit around and zoom on subjects. Disney is crowded and cramped. Wide is good, it will let you capture more images that are not just of someone's shoulder, etc. Wide also lets you get the park in view, plus faces of people you want to see. It also lets you grab those fun low light fireworks shots and castle shots. Fast enough to stop down and nail sharp, but blured out photos, to help limit ugly "photo bombs" too. Small, so you're lugging around a super heavy lens, and overall, not going to catch your lens on stuff as people walk right into your face while shooting. Sharp enough to nail everything quickly. With AF on the 5Diii and servo focus, you should grab most faces no problem. If you want to get close, just get close. You're going to be on top of your family anyways, so this length works there great. You're not going to be taking photos from away from them, you will be looking at a crowd if you do that, no matter what lens you do. And a long zoom doesn't do anything at close quarters.