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Oh No! He exposed to the Left!
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Feb 17, 2016 08:33:14   #
ygelman Loc: new -- North of Poughkeepsie!
 
burkphoto wrote:
Gaaaaa! ETTR/ETTL... There are no hard and fast rules... Just techniques. Did you get the image you wanted? That's the only question that matters.

There are principles and laws of physics behind the results, but no rules! . . .

We agree; that's why I called it a hum-drum mantra, and I like your style . . . but I'd still like to see an expert comparison.

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Feb 17, 2016 08:40:21   #
Rich1939 Loc: Pike County Penna.
 
rook2c4 wrote:
It's not a fixed rule, and has never been one. An experienced photographer can analyze a scene and make decisions of exposure based on that analysis. Sometimes it will be ETTR, sometimes ETTL, and sometimes exactly as indicated by the meter.


Precisely and when we're not sure we bracket
ETTL/ETTM/ETTR

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Feb 17, 2016 09:37:24   #
mallen1330 Loc: Chicago western suburbs
 
Rich1939 wrote:
Precisely and when we're not sure we bracket
ETTL/ETTM/ETTR

I agree... When I was taking slides back in the 70's I got the best results by underexposing and over developing. For my real estate photos today I bracket. For scenes with bright windows and dark rooms, I find that the underexposed (-2) shot is easier to bring out the shadow detail without blowing out the windows.

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Feb 17, 2016 10:03:00   #
sendero72 Loc: Candler, North Carolina
 
I find it easier to shoot Raw + jpeg and bracket. That seems to cover the bases.

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Feb 17, 2016 10:16:41   #
mallen1330 Loc: Chicago western suburbs
 
ygelman wrote:
Here is the well known photographer, Rick Sammon, who writes in DPMag that he purposefully under-exposed his shot. I guess it takes at least one expert to lay to rest that hum-drum mantra of ETTR as a fixed rule.

In many cases, I find that ETTL is easier to fix up - especially using LightZone. Here's my attempt...

After Lightzone PP
After Lightzone PP...

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Feb 17, 2016 10:25:49   #
rmalarz Loc: Tempe, Arizona
 
mallen1330 wrote:
In many cases, I find that ETTL is easier to fix up - especially using LightZone. Here's my attempt...


Wow, if you don't mind my saying, that looks like crap. That is, unless that was your intended plan on how the scene should look.
--Bob

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Feb 17, 2016 10:52:00   #
burkphoto Loc: High Point, NC
 
Gene51 wrote:
...ETTR was conceived for negative media. You could always burn in overexposed highlights (they were blocked up but recorded), but you could never recover detail lost to underexposure, which would show up as clear areas on a negative...



Much of the portrait photography world rated Kodak's ISO 160 Professional Color Negative Films at speeds ranging from 80 to 125 as a matter of course, just to have that extra highlight detail to work with, along with more detail in the shadows. Many pro labs even developed them to a lower-than-normal gamma, to preserve the upper mid-tones and highlights.

That changed a little with the advent of Portra films, which were optimized for scanning, but a one stop "overexposure" of Portra certainly wasn't a bad idea!

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Feb 17, 2016 11:08:32   #
Uuglypher Loc: South Dakota (East River)
 
Racmanaz wrote:
Does anyone ever ETTM anymore? :)


EXPOSE TO THE MIDDLE ?

Sure..Those shooting JPEGs with a camera posessing sufficient DR to encompass the scene's DR.

Dave

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Feb 17, 2016 11:10:39   #
burkphoto Loc: High Point, NC
 
ygelman wrote:
We agree; that's why I called it a hum-drum mantra, and I like your style . . . but I'd still like to see an expert comparison.


Agreed. I think this is something each of us should do for our own reference purposes. Take a scene with a lot of range, add a 21-step gray scale and a ColorChecker chart, and perhaps a several races of live human models, and record both raw and large, finest JPEGs at 1/3 stop intervals over a +/- five stop range. Then mess with the raw images in post to see what works FOR YOUR PERSONAL STYLES. Evaluate the JPEGs, too, if you like, to compare the available range.

I haven't done this in a few years, and no longer have the files (they belonged to my former employer), but I did such tests a decade ago, when testing new cameras. It's a great exercise.

In general terms, what I learned was that ETTL works well if you use JPEGs... A 1/3 stop underexposure, as measured with an incident meter, is about right. ETTR works well if you use raw files. About one stop, ±1/3 stop, of overexposure greatly enhances shadows and still includes recoverable highlights in most average daylight scenes.

Raw files have so much data (which translates to latitude) that you can generally go a stop under to a stop over with few worries and subtle differences. Get very far outside that range, and you're either producing a special mood or effect, or you are getting sub-optimal results, depending upon your interpretation!

JPEGs generally require a dead-on accurate exposure at the camera to look their best. I've always said the exposure latitude at the camera is that of slide film — about +1/3, -1/2 stop. Outside that range, you blow the highlights or lose noticeable shadow details.

Again, do what works for your interpretation of a subject.

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Feb 17, 2016 11:30:00   #
Uuglypher Loc: South Dakota (East River)
 
ygelman wrote:
Here is the well known photographer, Rick Sammon, who writes in DPMag that he purposefully under-exposed his shot. I guess it takes at least one expert to lay to rest that hum-drum mantra of ETTR as a fixed rule.


Hey,
Nothing wrong with ETTLif one's purposes are to avoid all risk of blown highlights, capture all shadow detail possible with no concern for capture of maximal noisel (capture of lowest.possible signal-to-noise ratio )., and thus capturing the lowest possible qualityimage data while purposefully leaving some off the cameras DR unused.

If those are your aims, by all means, ETTL !

Dave

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Feb 17, 2016 11:30:01   #
Uuglypher Loc: South Dakota (East River)
 
ygelman wrote:
Here is the well known photographer, Rick Sammon, who writes in DPMag that he purposefully under-exposed his shot. I guess it takes at least one expert to lay to rest that hum-drum mantra of ETTR as a fixed rule.


Hey,
Nothing wrong with ETTLif one's purposes are to avoid all risk of blown highlights, capture all shadow detail possible with no concern for capture of maximal noisel (capture of lowest.possible signal-to-noise ratio )., and thus capturing the lowest possible qualityimage data while purposefully leaving some of the cameras DR unused.

If those are your aims, by all means, ETTL !

Dave

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Feb 17, 2016 11:35:54   #
mallen1330 Loc: Chicago western suburbs
 
rmalarz wrote:
Wow, if you don't mind my saying, that looks like crap. That is, unless that was your intended plan on how the scene should look.
--Bob

Actually, no. I was not intending to make it look like crap :shock:

Not having the actual raw file to work with -- only the small underexposed JPEG thumbnail that was posted, I did my best with LightZone to try to show that detail CAN be pulled from the shadows without blowing out the highlights. -- Not trying to make the image better looking.

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Feb 17, 2016 11:42:15   #
Rich1939 Loc: Pike County Penna.
 
burkphoto wrote:
Agreed. I think this is something each of us should do for our own reference purposes. Take a scene with a lot of range, add a 21-step gray scale and a ColorChecker chart, and perhaps a several races of live human models, and record both raw and large, finest JPEGs at 1/3 stop intervals over a +/- five stop range. Then mess with the raw images in post to see what works FOR YOUR PERSONAL STYLES. Evaluate the JPEGs, too, if you like, to compare the available range.

I haven't done this in a few years, and no longer have the files (they belonged to my former employer), but I did such tests a decade ago, when testing new cameras. It's a great exercise.

In general terms, what I learned was that ETTL works well if you use JPEGs... A 1/3 stop underexposure, as measured with an incident meter, is about right. ETTR works well if you use raw files. About one stop, ±1/3 stop, of overexposure greatly enhances shadows and still includes recoverable highlights in most average daylight scenes.

Raw files have so much data (which translates to latitude) that you can generally go a stop under to a stop over with few worries and subtle differences. Get very far outside that range, and you're either producing a special mood or effect, or you are getting sub-optimal results, depending upon your interpretation!

JPEGs generally require a dead-on accurate exposure at the camera to look their best. I've always said the exposure latitude at the camera is that of slide film — about +1/3, -1/2 stop. Outside that range, you blow the highlights or lose noticeable shadow details.

Again, do what works for your interpretation of a subject.
Agreed. I think this is something each of us shoul... (show quote)


If we were to accept what is proclaimed the way to properly use our equipment instead of (as you said) testing what we have to get the results we want, then we will continually be doomed to mediocrity. Were we to learn our equipment to the extent that we know how it performs under various conditions, to know when to over or under expose for example, then we might stand a chance to stand a little taller.

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Feb 17, 2016 11:51:32   #
burkphoto Loc: High Point, NC
 
Rich1939 wrote:
If we were to accept what is proclaimed the way to properly use our equipment instead of (as you said) testing what we have to get the results we want, then we will continually be doomed to mediocrity. Were we to learn our equipment to the extent that we know how it performs under various conditions, to know when to over or under expose for example, then we might stand a chance to stand a little taller.


:thumbup:

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Feb 17, 2016 11:52:20   #
rmalarz Loc: Tempe, Arizona
 
Rich1939 wrote:
If we were to accept what is proclaimed the way to properly use our equipment instead of (as you said) testing what we have to get the results we want, then we will continually be doomed to mediocrity. Were we to learn our equipment to the extent that we know how it performs under various conditions, to know when to over or under expose for example, then we might stand a chance to stand a little taller.


Exactly. Rather than being doomed to mediocrity, testing and knowing your equipment is essential. The testing should be planned and organized to obtain the best results.

Just what are the cameras limits? Once known, use those limits to obtain optimum exposures. Eliminating the guessing and need to do multiple exposures of the same scene hoping to get something correct.
--Bob

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