Flash, focus screen

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Archive 2008 · Flash, focus screen

Emile Gregoire
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p.1 #1 · Flash, focus screen

Folks,

Quick question that popped into my mind today. I've started using a split-prism screen in my 1D3, love it to check focus accuracy, takes away a bit of the guess-work, especially with the new 85L toy (which is kind of tricky to focus, both AF and MF).

Now the manual states I should avoid using Evaluative and Spot metering. Fine by me.

What happens when I connect my flash: can I leave that in Evaluative or should I change it to Average as well. The latter would seem likely but so far I've counted on Evaluative and have gotten kind of used to it.

Any advice or opinions?

Thanks
-Emile

Edited on Aug 28, 2008 at 04:45 PM

Aug 28, 2008 at 04:42 PM

cgardner
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p.1 #2 · Flash, focus screen

Since you have a baseline of experience with evaluative flash metering you should be able to detect whether or not its working the same way or not. The most systematic way to test would be to put set the camera on a tripod, then try both modes with both the split-screen and the old one as a baseline.

Based on using split-screen focusing on other cameras I'm guessing that it will change the way the light reaches the exposure sensor in the most critical weighted zone. If that happens in some consistent manner it may be simply a matter of adjusting your current FEC baseline up or down. But since the angle of view of the viewfinder by exposure sensor is different than the eye piece it may be seeing the split area as half light / half dark which would skew the readings beyond the point of correcting consistently.

Chuck

Edited on Aug 28, 2008 at 05:00 PM

Aug 28, 2008 at 05:00 PM

Ralph Conway
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p.1 #3 · Flash, focus screen

can not help you. But where in france do you live? I would love to test your equipment without flash. Split screen is the best I ever did before AF occurs. and it still gives me a better feling, then camera choices anything to focus on.

Ralph

Aug 28, 2008 at 05:06 PM

Emile Gregoire
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p.1 #4 · Flash, focus screen

Chuck, Ralph, thanks for answering.

Chuck, your guess is exactly the same as mine. I just hoped someone here would have already done the testing as I prefer to go out and shoot

Aug 28, 2008 at 05:13 PM


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