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January 19, 2019, 08:47:53 PM


Author Topic: low light focusing  (Read 2724 times)

Offline thelittlelim

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low light focusing
« on: March 11, 2014, 04:06:18 PM »
Does the t2i have a function to use as a light instead of the flash strobbing in low light situations?

Like point and shoot cameras typically have a LED bulb or something that shines light instead of blinding people :) Does the t2i have that capability?

Offline AndyCivil

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Re: low light focusing
« Reply #1 on: March 11, 2014, 06:59:52 PM »
Yes, it does. I should say that I've not tried this to confirm what I'm going to tell you, but... my belief is that if you go into custom settings, item number 7, you can set Disable, Enable, Ext flash only, or IR assist only.

The IR beam is the LED on the front between the jog wheel and the mode dial. If the flash is down, then it will use this IR beam for the AF assist. However, if you have an external flash, then it will pulse it for focusing purposes, as you noted. If you prefer to stop the external flash from doing that, then I think setting "IR assist only" which is choice #3, then you will get what you want.

** EDIT: This turned out to be wrong - see below ***
« Last Edit: March 12, 2014, 08:40:14 AM by AndyCivil »

Offline thelittlelim

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Re: low light focusing
« Reply #2 on: March 11, 2014, 11:27:55 PM »
So I've tried that previously, and I don't get a light. Does this work for anyone else? Is my camera just broken?

Offline Ochotona

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Re: low light focusing
« Reply #3 on: March 12, 2014, 08:07:05 AM »
Isn't the IR beam invisible infrared light?

Offline AndyCivil

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Re: low light focusing
« Reply #4 on: March 12, 2014, 08:43:48 AM »
Well, I'm surprised and somewhat disappointed! On further investigation, I discovered that the t2i itself has NO IR assist beam itself; the function only works when you have a speedlite attached.

I had always assumed that the LED by the jog wheel was the IR assist LED. I never saw it light up, but I assumed that it was simply because it was invisible IR light. Actually, it turns out that this is a visible light LED used for red-eye reduction, and the self-timer indication only!

So you are correct, without a speedlite attached, there is no infra-red autofocus assist beam available. Shame!

Offline thelittlelim

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Re: low light focusing
« Reply #5 on: March 19, 2014, 06:00:48 PM »
That is a shame. Canon needs to do away with the built in flash strobing. Everyone (photo subjects) hate it, it's blinding and irritating, and they all say, I wasn't ready.

This is if I weren't shooting for portraits, just if I'm using it as a point and shoot to get like a group shot or something.

Offline AndyCivil

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Re: low light focusing
« Reply #6 on: March 19, 2014, 11:55:49 PM »
I think, if you disable red-eye reduction (single-dot shooting menu) AND disable the AF-assist (custom functions 7) then you'll get your wish. But the focusing may be more 'hit and miss'.

Unless you've already done so, you might try "back button focusing" which gives you more control over when the focus operation takes place (not in 'auto').