Crop body choice for kids running around

I own a t3i and 60d. Would there be a significant difference with let's say a 70d or 7d? I'm not necessarily having problems, but was wondering how much a difference another crop would make for action shots...

60D is great for action shots
the 7D the same but with fast focus
and the 70D is great for low light with a fast prime

Frodge wrote in post #16897787
I own a t3i and 60d. Would there be a significant difference with let's say a 70d or 7d? I'm not necessarily having problems, but was wondering how much a difference another crop would make for action shots...

Heya,

Not much difference at all, except for maybe a 1/3rd to 2/rds stop difference in ISO performance (70D only), which equates to higher shutter speeds for the same noise level that is tolerable to you. The 7D & 70D have a slightly more robust autofocus system, and the 7D has the most robust of these options. But the 60D is more than capable of sports shots.

The significance will be the lens, how fast it focuses, it's aperture for light gobbling, etc.

The other big difference will simply be you. Shooting action means high frame rates, 1/640s to start, 1/1250s or 1/2000 wouldn't be out of the question. ISO as high as you can tolerate, to keep exposure. Don't even look at aperture, just let it be whatever it needs to be to get light and keep that shutter/ISO up.

I use an 85mm F1.8 on crop for this reason, to shoot low light softball games, kids soccer in the sun, etc, on a 650D. I have no issues with autofocus systems. They're not as fast as a Falcon, or King Fisher. You don't need 7D/70D/5D3/1DX for some sports.

Very best,

When I had the 20D and 580EXII, I would use the 2nd curtain and AI servo mode to focus and snap away without a problem. So 60D is more than enough in that sense. Even with my 7D it needs adequate lighting and/or fast prime with kids (I have two).

Higher the frame rate, more keepers but I've snapped away some photos of my dog running around crazy in the backyard with the 60D. It was difficult and out of 20 images I only had two that was not blurry. Of course she was running much faster than a child.

I'd go for the 70D since if I had kids I'd for sure want videos of them from time to time and in this respect the 70D has a significant advantage.

I would assume there would be very small differences in ISO. At f2.8 it is much easier to nail focus than say f1.4. So I would just keep using what you have and practice more.