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05/10/2006 10:31:51 AM · #1 |
| Learned quite a few things from //photonotes.org/articles/eos-flash/index2.html#autofill this morning about Canon E-TTL. Possibly the most important thing is the reason to NOT use "focus and recompose" when using E-TTL flash. Quite a lot on that site that is very informative, and I've been struggling to make sense of the system. This helps, in case others are interested. |
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05/10/2006 10:39:26 AM · #2 |
Originally posted by nards656:
Learned quite a few things from //photonotes.org/articles/eos-flash/index2.html#autofill this morning about Canon E-TTL. Possibly the most important thing is the reason to NOT use "focus and recompose" when using E-TTL flash. Quite a lot on that site that is very informative, and I've been struggling to make sense of the system. This helps, in case others are interested. |
... clickable link for the lazy (includes me) |
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05/10/2006 10:40:11 AM · #3 |
Active link :-)
//photonotes.org/articles/eos-flash/index2.html#autofill
Edit: Ack, too slow, LOL.
Message edited by author 2006-05-10 10:40:59.
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05/10/2006 10:48:56 AM · #4 |
So sorry; forgot to auto parse. I really don't know why that's an "option"; every other site I know of does it automatically and I think it should be a default here.
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05/10/2006 10:51:15 AM · #5 |
Originally posted by nards656:
So sorry; forgot to auto parse. I really don't know why that's an "option"; every other site I know of does it automatically and I think it should be a default here. |
or maybe an option in my prefrences
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05/10/2006 10:55:00 AM · #6 |
Originally posted by nards656:
So sorry; forgot to auto parse. I really don't know why that's an "option"; every other site I know of does it automatically and I think it should be a default here. |
It's goofy... you can check the "parse URLs" box, and eventually, it inevitably gets reset to unchecked. Bizzarre.
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05/10/2006 02:55:52 PM · #7 |
Canon Digital SLRs are "Type A" bodies. You can use focus and recompose Type A bodies with Flash Exposure Lock. I know the 300D with 580EX allows this. (you can tell, becasuse when you half-press the shutter, the flash emits a "pre-flash" that is used for metering.)
On the other hand, focus and recompose does not lead to the sharpest possible images. |
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05/10/2006 03:41:04 PM · #8 |
Originally posted by hankk:
On the other hand, focus and recompose does not lead to the
sharpest possible images. |
And on the other hand... the center focus point is the most sensitive of any of the focus points, having both a horizontal and a vertical sensor in one (all other points are horizontal or vertical, but not both). Combine it with a 2.8 or faster lens and you get exceptional focusing accuracy off of the center focus point.
There are always trade-offs, huh? :-)
Someday we'll get a camera/lens combo that has the best of all worlds - in the mean time, we'll just keep spending money! |
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05/11/2006 10:34:25 AM · #9 |
Originally posted by dwterry:
Originally posted by hankk:
On the other hand, focus and recompose does not lead to the
sharpest possible images. |
And on the other hand... the center focus point is the most sensitive of any of the focus points, having both a horizontal and a vertical sensor in one (all other points are horizontal or vertical, but not both). Combine it with a 2.8 or faster lens and you get exceptional focusing accuracy off of the center focus point.
There are always trade-offs, huh? :-)
Someday we'll get a camera/lens combo that has the best of all worlds - in the mean time, we'll just keep spending money! |
There's the other tradeoff of cropping in PP :-)
"Someday" may be soon :-)
The 5D has three sensors with the H&V ability. But they are the center 3 focus points (the center and two of the hidden ones).
The 1D MIIn seems to have a bunch of H&V capable focus points, all clustered toward the center.
Wonder what the next 1D will have for focusing?
Message edited by author 2006-05-11 10:34:45. |
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