flash - exposure question

I wouldn't say so. There is no face recognition incorporated in E-TTL II.

apersson850 wrote in post #12015968
I wouldn't say so. There is no face recognition incorporated in E-TTL II.

It's not part of the metering/color processor ?

No. The iFCL metering system does recognize color, and does compensate for that reddish tones are prone to be underexposed, since electronic light metering equipment often are a bit oversensitive to red. So they reduce exposure of reddish tones a bit too much.

But that's not face regocnition. It applies to a red car as well. Besides, it depends upon your, or rather your subject's, ancestry if this reddish issue applies to your face or not.
Since the camera meters flash light, iFCL metering applies to E-TTL II as well.

apersson850 wrote in post #12016090
No. The iFCL metering system does recognize color, and does compensate for that reddish tones are prone to be underexposed, since electronic light metering equipment often are a bit oversensitive to red. So they reduce exposure of reddish tones a bit too much.

But that's not face regocnition. It applies to a red car as well. Besides, it depends upon your, or rather your subject's, ancestry if this reddish issue applies to your face or not.
Since the camera meters flash light, iFCL metering applies to E-TTL II as well.

Anders,
I'm continually amazed at how much you know about the canon systems.

ceriltheblade wrote in post #12010641
gosh darn it all - i hate it when , after reading all these manuals that come with the hardware, I still missed something! argh! thanks msowsun for the extra link and discussion. I am now more confused! and thanks canonistul for the heads up.

this lighting stuff sometimes is so $%^!@$^( difficult for those of us who shoot maybe 1-2 times per week as a hobby!

When it comes to flash accuracy and repeatability, digital in general took a huge step backwards compared to the much more simple and reliable accuracy of film camera TTL. Now there are these arcane situation-based rules that we need to try to remember, to get the best out of digital-TTL

It's as bad as trying to learn the arcane rules behind the English language and spelling.

That came even in film cameras. My EOS 30 uses E-TTL (not E-TTL II). It doesn't have any sensor for TTL, like my even older T90 has.

drdiesel1 wrote in post #12012899
How are you judging that EV information ? What format are you shooting in ? Raw or Jpeg ?

just wach the hystogram ...and only raw I shoot.

BestVisuals wrote in post #12013050
The amount of flash exposure using an OEM flash for Canon is identical, regardless of mode. Only the background exposure is modified.

The attached photo was taken using Av mode, TTL mode set to Average (not Evaluative). The overall exposure was 5 seconds. I made a minor flash adjustment to prevent blowing out the dress.

When I shot events, I always shot on Manual to guarantee the minimum shutter speed and guarantee my f/stop was always f/8.

There are many discussions surrounding Average vs. Evaluative TTL, and for those that use single-point focusing like me, Average produces far better exposures than Evaluative. Multi-point focusing reduces the severe underexposure of Evaluative, but it also creates many mis-focused pictures.

thos is a slow sync shoot. this mode is not for every shoot you take. me at one event i shoot only raw and indoor shoot on manual mode on camera and the flash on ettl average. what iso use in this picture?

BestVisuals wrote in post #12013072
Average TTL is more consistent flash exposure depending upon your focusing and framing method. Under Evaluative, the exposure is apparently judged based upon the activated focus points. Since I use single-point focus, this caused flash exposure to basically be determined like a spot meter in the center of the photo. For my style (close cropping, single point focus), Average TTL produced a very high percentage of good exposures. Using Evaluative, I got 2/3 severly underexposed photos (2-4 stops under).

you're right!

canonistul wrote in post #12017523
just wach the hystogram ...and only raw I shoot.

Then you need to adjust the camera to a Neutral picture style and set the contrast to it's lowest setting.
The histogram and rear LCD images are a jepg representation of the actual file. In camera picture style and contrast will effect both

drdiesel1 wrote in post #12019709
Then you need to adjust the camera to a Neutral picture style and set the contrast to it's lowest setting.
The histogram and rear LCD images are a jepg representation of the actual file. In camera picture style and contrast will effect both

Work with Lightroom 3 and im very satisfied by results. With dpp work only when im hurry.

canonistul wrote in post #12027120
Work with Lightroom 3 and im very satisfied by results. With dpp work only when im hurry.

You're not understanding.

drdiesel1 wrote in post #12027156
You're not understanding.

Sorry for my English. I work most of the time but work only in Lightroom and DPP when rushed. Lightroom is an efficient raw processing software. Now I hope I was understood. As you said give you full right: yes, the flash mode setting is the best neutral, and a lower contrast. But again I say Lightroom greatly help in any situation.