The focus-assist tag has no wiki summary.
5
votes
1answer
180 views
Why does the IR-Assist beam of Canon Speedlites not get used in AI Servo AF mode?
The IR AF-assist beam on the Canon Speedlites (I have a 430 EX II) doesn't seem to come on when the DSLR (I have the EOS 7D) is in 'AI Servo' AF-mode. It works fine if I'm in one-shot mode (comes on ...
1
vote
4answers
129 views
How long can an AF Assist LED last?
Many compact cameras and DSLRs have built-in AF Assist LEDs.
How do I know how long the LED in the camera will last? (That is, how many more beams before the LED requires replacement?)
I notice ...
2
votes
1answer
554 views
Why won't my Canon Speedlite 430EX II AF Assist come on?
I just purchased the Canon Speedlite 430EX II and for the life of me I can't get the AF Assist light to come on! I shoot in manual on my 5D Mark II, and I have set the flash on ETTL. The guide says ...
4
votes
2answers
156 views
How to use in-camera AF light, instead of speedlight AF light?
I have a Nikon D3100 and a Yongnuo YN467 speedlight. What I need is to use thee AF light from the camera body, since I realize it is really better than the speedlight one. Is there any way to achieve ...
4
votes
3answers
2k views
Why does my Nikon D5000's AF Assist only turn on in some automatic modes?
I am using a Nikon D5000 with a 50mm f/1.4 with autofocus. When I try to use manual mode (or aperture priority, or shutter priority), my AF assist beam does not light, which makes it hard for my ...
2
votes
6answers
6k views
How can I focus in very low light with my Canon 60D?
I'm using a Canon 60D and would like to focus in low light. I know Canons — in fact, all cameras — can struggle here with auto focus, but I'm talking about light so low that I wouldn't be able to see ...
3
votes
1answer
349 views
Why doesn't the focus assist light get triggered on a flash connected via a Pocket Wizard TT1?
I have a Pocket Wizard TT1 and TT5 which work fine. I mount the TT1 on the camera shoe and the TT5 fires my remote flash ETTL fine.
I now want a focus assist light, so I set a flash (580, 430 or ...
