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2
votes
2answers
52 views

How advanced is phase detect AF for bird photography compared to contrast detect AF?

My first and only camera is a panasonic Lumix G5 with a panasonic 45-200mm. I wanted to have a first hand experience and decide if I want to switch to aps-c dslrs, but I never had an opportunity to ...
6
votes
2answers
280 views

When do you not want to use continuous autofocus (C-AF)?

This Nikon promotion website sums up when to use single autofocus and when to use continuous autofocus. (http://imaging.nikon.com/history/basics/16/03.htm) So, basically if you want to ...
1
vote
2answers
100 views

How does aperture/DOF affect continuous autofocus?

When the autofocus system is deciding to adjust the focus, say in a situation of the subject getting closer to or farther from the lens, does it take into consideration the current depth of field, ...
1
vote
2answers
117 views

Quiet video autofocus on a consumer level SLR? [closed]

I bought a Canon Rebel T3 a while back before doing my homework on the features. The video quality looks very good to me. However, I have to hold down the shutter button to keep focus. The auto-focus ...
1
vote
1answer
262 views

Finding the distance of object from camera to the point of autofocus

Is it possible to find the distance to which the camera is auto focussing ? Camera auto focuses itself to view a particular plane in the real world in front of it. Is it possible to estimate the ...
9
votes
2answers
1k views

Can lens focus speed affect continuous shooting speed?

I was using a 50mm f/1.8 II lens on my Canon 40D yesterday, and I was trying to capture some action shots using continuous high-speed drive mode and AI Servo autofocus mode. I was using a shutter ...
15
votes
2answers
3k views

When to use a particular auto-focus mode

I have a Nikon D90, and after taking a photography course that recommended single point auto-focus I predominately use that. I was testing some of the modes today (single point, dynamic area, ...
4
votes
4answers
1k views

Why does my Nikon D90 autofocus not work in rapid succession?

When photographing candid shots of my children at play with a Nikon D90, I have trouble with the autofocus system. I focus and shoot one shot, great. But a second later another shot opportunity ...