Ugly Hedgehog - Photography Forum
Home Active Topics Newest Pictures Search Login Register
Main Photography Discussion
Constant ETTR...
Page <<first <prev 7 of 8 next>
Jan 11, 2019 18:14:44   #
gessman Loc: Colorado
 
rmalarz wrote:

--Bob



Reply
Jan 11, 2019 18:15:34   #
gessman Loc: Colorado
 
rmalarz wrote:
I've found that the amount of additional exposure varies from camera to camera. Please, don't interpret that as model to model. Identical models can vary slightly in the amount of additional exposure they'll handle.
--Bob


Thank you sir. More good info.

Reply
Jan 11, 2019 18:17:47   #
gessman Loc: Colorado
 
blackest wrote:
Are you familiar with recording on cassette tape set the levels too high and the loud bits got clipped , too low and the quiet bits got lost in hiss. Digital photography is a lot like that whites are loud blacks are quiet. Ettr essentially means exposing for as long as possible without the whites getting too loud if you had a scale of 0 to 99 then bout 98 , 99 is the limit anything higher is off the scale and is pure white. At the other end of the scale you are making the dark values as high as possible so they are not at the same level as the hiss.

Depending on the scene this can result in over or under exposure but you can post process to put the tones where they should be. If the bright areas of your scene are not too bright you should have better shadow detail. If things are very bright the shadow detail will be worse but you can bring up the black base level which can look ok. Jpeg shooting trys to properly expose the midtone and highlights and shadows fall where they do. Ok quite a lot of the time but often makes a blue sky white as the highlight gets over exposed.So really Ettr is expose so you record the strongest signal and the widest range of values. With high dynamic range exposures your shadows will look worse but your highlights will not be blown. It will work best as base ISO although you run the risk of the shutter speed being too low. Especially so if your lens is not so fast. Sometimes you would be better bracketing the exposure.
Are you familiar with recording on cassette tape s... (show quote)


Yes, and that's an excellent analogy and I appreciate it.

Reply
 
 
Jan 11, 2019 18:19:53   #
gessman Loc: Colorado
 
srt101fan wrote:
Again, it depends on the metering mode. If his white egret is against a dark background, and he meters the WHOLE scene, the white areas might well be overexposed if he doesn't reduce the exposure from what the meter tells him.


I got it. Thanks.

Reply
Jan 11, 2019 19:04:10   #
gessman Loc: Colorado
 
CHG_CANON wrote:
It's not apples to apples and even harder to "see" what one means from an partial anecdote about exposure method. What did he meter on, the spot of the white of the bird and underexposed that? Or, the entire scene of which the bird was a percentage and underexposed from that metering?

Does the person saying to underexpose mean that they need to process or don't desire to process the image? Or, does it mean they have to increase the exposure in post to get back to a white bird with feather details? If / when processed, what do the shadows and image noise look like in that processed image? Have they tried exposing for the highlights and kept the brightest spots in the image at or just below where the highlights blow? When processed to completion, how does that image compare?

Again, you can't compare one person's high-level description of their method to another's without both seeing the results and analyzing / understanding the different methods used to create each result. Otherwise, you simply have the run of the mill 10-page UHH thread ...
It's not apples to apples and even harder to "... (show quote)


I understand. Here's all he said: "When I shoot white birds in flight (example would be Snowy Egret) and to get detail in the feathers I shoot Raw and underexpose by at least 1 to 3 stops to get feather detail. Anything over exposed would blow out all the detail."

It looks like he didn't specify his metering method so I suppose one could surmise that would be me jumping to conclusions. You can see what he allowed us to know about his technique. I made a guess that he would meter on the bird since the bird seemed to be his primary target and the detail in the feathers was an expressed important concern. Why would he meter on something else when his only concern was the appearance of the bird. Of course he may have metered on a grey card, north sky, grass, dirt, his hand, and he didn't say. As for how the bird looks, I had a look at his Photo Gallery posts but didn't find any white birds posted anywhere. Do you reckon he just set me up so I would look stupid and you could point it out to me?

Reply
Jan 11, 2019 19:10:05   #
gessman Loc: Colorado
 
rmalarz wrote:
I just posted Another ETTR Discussion to avoid clouding this conversation. Instead of a lot of theoretical discourses, I simply posted photographs done with the technique.
https://www.uglyhedgehog.com/t-573233-1.html
--Bob


Well sir, I wouldn't have minded you posting it here. I don't think this can go on too much longer and a change of direction might even have been good. I anxiously await an opportunity to stop this and get on over there and have a look at the thread you started. Thanks for posting the url here.

Reply
Jan 11, 2019 19:48:37   #
CHG_CANON Loc: the Windy City
 
gessman wrote:
I understand. Here's all he said: "When I shoot white birds in flight (example would be Snowy Egret) and to get detail in the feathers I shoot Raw and underexpose by at least 1 to 3 stops to get feather detail. Anything over exposed would blow out all the detail."

It looks like he didn't specify his metering method so I suppose one could surmise that would be me jumping to conclusions. You can see what he allowed us to know about his technique. I made a guess that he would meter on the bird since the bird seemed to be his primary target and the detail in the feathers was an expressed important concern. Why would he meter on something else when his only concern was the appearance of the bird. Of course he may have metered on a grey card, north sky, grass, dirt, his hand, and he didn't say. As for how the bird looks, I had a look at his Photo Gallery posts but didn't find any white birds posted anywhere. Do you reckon he just set me up so I would look stupid and you could point it out to me?
I understand. Here's all he said: "When I sh... (show quote)


No point in guessing, not by me for sure ...

Reply
 
 
Jan 11, 2019 20:06:02   #
gessman Loc: Colorado
 
CHG_CANON wrote:
No point in guessing, not by me for sure ...


I have been known to be borderline dyslexic at times right before a nap and it is possible that I can get under- and over- exposed confused but what I think I saw that sent me to guessing was his emphasis on the bird and the push to have detail so I figured he metered on the bird and then chose to underexpose by 2 stops, just the opposite of what Gene51, rmarlyz, and others have said they'd do which is to overexpose by a stop or two so it just looked to me like he was going 180* in the wrong direction. I have seen a few pictures by him and he does a good job but then there's no white birds to look at so he's the only one who knows what that looks like. What that made me think at first glance is that there's at least 3 or 4 notches of latitude between where a white bird can fit nicely without losing the detail.

That's the kind of stuff that has me confused - when experts disagree and can't seem to do anything but argue but then along comes this guy who says he has +1.5 dialed in permanently and only the aspects of the exposure triangle change and intentional overexposure, whatever you choose to call it, is built in with the +1.5 perpetual and everybody gets good pictures and happiness abounds throughout the land. At this point it just makes me seriously wonder what all the dogmatism and argument is about and anxious to do some experiments to see what my truth is. At the very least, to me, it leaves ample room for some doubt about some of the hard lines that we see taken when it comes to technique. You know - if you don't do it this way you won't be successful...

Reply
Jan 11, 2019 20:26:55   #
CHG_CANON Loc: the Windy City
 
gessman wrote:
I have been known to be borderline dyslexic at times right before a nap and it is possible that I can get under- and over- exposed confused but what I think I saw that sent me to guessing was his emphasis on the bird and the push to have detail so I figured he metered on the bird and then chose to underexpose by 2 stops, just the opposite of what Gene51, rmarlyz, and others have said they'd do which is to overexpose by a stop or two so it just looked to me like he was going 180* in the wrong direction. I have seen a few pictures by him and he does a good job but then there's no white birds to look at so he's the only one who knows what that looks like. What that made me think at first glance is that there's at least 3 or 4 notches of latitude between where a white bird can fit nicely without losing the detail.

That's the kind of stuff that has me confused - when experts disagree and can't seem to do anything but argue but then along comes this guy who says he has +1.5 dialed in permanently and only the aspects of the exposure triangle change and intentional overexposure, whatever you choose to call it, is built in with the +1.5 perpetual and everybody gets good pictures and happiness abounds throughout the land. At this point it just makes me seriously wonder what all the dogmatism and argument is about and anxious to do some experiments to see what my truth is. At the very least, to me, it leaves ample room for some doubt about some of the hard lines that we see taken when it comes to technique. You know - if you don't do it this way you won't be successful...
I have been known to be borderline dyslexic at tim... (show quote)


If you fill in the unsaid gaps with your own words / opinions, you're going to have a hard time sorting out the facts of a discussion of differences. Even if you heard this guy 100% accurate with his +1.5 reference, you didn't have / retain a word about what he was shooting and then you just filled-in this unknown with your own assumptions. We all do it, so I'm not trying to come down hard on you as if we don't all. But, developing your own solid base of what works and the details of why will help you / anyone value judge the potential of ideas that differ from your own in-depth understanding. A basic "can I see what you're talking about" can also many times cut to the heart of the matter, if there should be something real behind the internet words. The discrepancy may be nothing more than an inaccuracy of imprecise words rather than purposefully pushing bunk.

Reply
Jan 11, 2019 20:38:52   #
PierreD
 
anotherview wrote:
One could instead simply consult the histogram to see where the exposure values lie. And then adjust settings accordingly.


Thanks for this comment, Anotherview! Isn't it exactly how ETTR should be used most of the time: overexposed if necessary, and until the right end of the histogram touches the right vertical axis, but without exceeding it, or just barely so? This, of course, means that there is no fixed amount of overexposing, as this amount with always depend on the scene being photographed.

Reply
Jan 11, 2019 21:14:35   #
Timmers Loc: San Antonio Texas.
 
Gessman you have discovered a person who is truly living is the idea of 'Being Digital'. It in fact sits clearly in a deep understanding of the best options.

Raw has it's place in what has emerged as Chaos Theory. his working ideas is to ensure that the white will hold all the detail needed to manipulate the image in post.

Digression with a touch of history. In the days of film photography (analogue?) the image was 'expose for the SHADOWS and DEVLOPE for the highlights' This of course worked well.

The champion of this approach was extolled by Ansel Adams. Counter to this was the photographer William Mortenson. His position was that one should expose for the highlights and the shadows would be taken care of. His position was perfectly tenable if not a bit self serving. He did studio photography with artificial light and in fact his approach was excellent for his purposes, in that one established a good exposure of film in a studio and then made efforts to see that where shadow detail was needed and wanted it was taken care of with the proper use of studio lighting.

Of the two approaches Adams was the better and more realistic for the use of film.

The problem today is that there is idiotic hold over to film (analogue) based technology. It has caused so many to just not 'get' digital photography. Today, regardless of shooting jpegs or Raw files the technology demands that you MUST "Expose for the highlights and the shadows will take care of themselves" Bill Mortenson style quote. I will go further, any photographer with any base line grasp of digital technology MUST shoot RAW files, of course that photographer (ME) may also shoot and store a select jpeg along with the RAW file, but not shooting a RAW file means that you as a photographer have no understanding of Being Digital. The RAW file ensures options for the future that the jpeg can and will never give you options for the future.

If you don't understand that a RAW file is the encoded information that allows you to engage chaos Theory tomorrow or into the future then it is high time you wake up and engage the modern world. No? Then why are you shooting digital works, go back to the old analogue jpeg of yester year and have in fact the film version of a RAW file. Yes film contains such a wealth of information that it is truly a RAW file, it is just that silver gelatin, chemicals and light through an enlarger is sooooo kool, but it is like racing a jet plane from London to Tokyo, done before you start and loose.

I know, harsh, but true.

Digital photography is not just the new way to do photography, it is so far beyond the old analogue approach that there is no way to understand this till you can begin to see with digital eyes and ears.

Reply
 
 
Jan 11, 2019 21:20:56   #
gessman Loc: Colorado
 
CHG_CANON wrote:
If you fill in the unsaid gaps with your own words / opinions, you're going to have a hard time sorting out the facts of a discussion of differences. Even if you heard this guy 100% accurate with his +1.5 reference, you didn't have / retain a word about what he was shooting and then you just filled-in this unknown with your own assumptions. We all do it, so I'm not trying to come down hard on you as if we don't all. But, developing your own solid base of what works and the details of why will help you / anyone value judge the potential of ideas that differ from your own in-depth understanding. A basic "can I see what you're talking about" can also many times cut to the heart of the matter, if there should be something real behind the internet words. The discrepancy may be nothing more than an inaccuracy of imprecise words rather than purposefully pushing bunk.
If you fill in the unsaid gaps with your own words... (show quote)


You're right - I did do a little "what-ifing." I mostly set out to play a little "devil's advocate" to see what others thought was going on and got drawn further into it than I intended to go when pressed for details I don't have. I just tried to "google" that phrase and nothing came up. One thing I did find interesting was on a Canon site talking about exposure compensation. The article accompanied by a side-by-side pictures of a stuffed rabbit toy in both. One side was mostly all white inside the box with good detail. The other is pretty dark grey. The accompanying text said, "...if you have a white subject with good detail you can meter on the white and dial in +1.5 to +2 you will have a good exposure and you will retain the detail in the subject. Then it said that if you meter on the dark one, which looks to be close to the shade of a grey card, and dial in -1.5 to -2 you will retain the same level of detail. Sounds like billnikon might have metered the dark side but of course, I'm just guessing again. You can find that about 2/3rds down the page at:
https://cpn.canon-europe.com/content/education/infobank/exposure_settings/exposure_compensation.do

Reply
Jan 11, 2019 21:22:31   #
CHG_CANON Loc: the Windy City
 
PierreD wrote:
Thanks for this comment, Anotherview! Isn't it exactly how ETTR should be used most of the time: overexposed if necessary, and until the right end of the histogram touches the right vertical axis, but without exceeding it, or just barely so? This, of course, means that there is no fixed amount of overexposing, as this amount with always depend on the scene being photographed.

Yes, that's what most of us are saying: an absolute value, expressed in x.x over (or under) 0 is likely not accurate nor universally applicable. Rather, the photographer should develop their initial exposure parameters based on their needs for a fast (or slow) shutter speed and a wider or narrow aperture, then adjust the ISO and review the meter in the view finder and / or the results on the histogram looking at highlight warnings. Meter how and where you want, based on your own preferred mode. If you've developed detailed experience for your model on how much over the right side you can push the histogram, so much the better for your individual photography.

gessman's reference above to the Canon demonstration presents maybe a use of this absolute idea, though still presented as a range. The assumption is a P / S / T shooting mode and spot metering so EC can be applied at a relatively standard amount for a given camera assuming the metering is accurate and taken always on the brightest (or darkest) aspect of the image. gessman's author that started this thread might be using this exact scenario if we adjust the story to fit this approach.

Reply
Jan 11, 2019 23:02:47   #
gessman Loc: Colorado
 
Timmers wrote:
Gessman you have discovered a person who is truly living is the idea of 'Being Digital'. It in fact sits clearly in a deep understanding of the best options.

Raw has it's place in what has emerged as Chaos Theory. his working ideas is to ensure that the white will hold all the detail needed to manipulate the image in post.

Digression with a touch of history. In the days of film photography (analogue?) the image was 'expose for the SHADOWS and DEVLOPE for the highlights' This of course worked well.

The champion of this approach was extolled by Ansel Adams. Counter to this was the photographer William Mortenson. His position was that one should expose for the highlights and the shadows would be taken care of. His position was perfectly tenable if not a bit self serving. He did studio photography with artificial light and in fact his approach was excellent for his purposes, in that one established a good exposure of film in a studio and then made efforts to see that where shadow detail was needed and wanted it was taken care of with the proper use of studio lighting.

Of the two approaches Adams was the better and more realistic for the use of film.

The problem today is that there is idiotic hold over to film (analogue) based technology. It has caused so many to just not 'get' digital photography. Today, regardless of shooting jpegs or Raw files the technology demands that you MUST "Expose for the highlights and the shadows will take care of themselves" Bill Mortenson style quote. I will go further, any photographer with any base line grasp of digital technology MUST shoot RAW files, of course that photographer (ME) may also shoot and store a select jpeg along with the RAW file, but not shooting a RAW file means that you as a photographer have no understanding of Being Digital. The RAW file ensures options for the future that the jpeg can and will never give you options for the future.

If you don't understand that a RAW file is the encoded information that allows you to engage chaos Theory tomorrow or into the future then it is high time you wake up and engage the modern world. No? Then why are you shooting digital works, go back to the old analogue jpeg of yester year and have in fact the film version of a RAW file. Yes film contains such a wealth of information that it is truly a RAW file, it is just that silver gelatin, chemicals and light through an enlarger is sooooo kool, but it is like racing a jet plane from London to Tokyo, done before you start and loose.

I know, harsh, but true.

Digital photography is not just the new way to do photography, it is so far beyond the old analogue approach that there is no way to understand this till you can begin to see with digital eyes and ears.
Gessman you have discovered a person who is truly ... (show quote)


So that's what I've found. I've been feeling most of the day like I'm the only person to actually see Sasquatch. I will certainly accept the idea of Chaos Theory. I've heard the term being bantered around but haven't bothered to delve into the significance. Perhaps I will now. I see that it embodies a section set aside as Chaos Theory Photography, found with Google. With a quick glance through some of what I saw, I will admit that I may not get the theory part but I sure see the chaos. I appreciate the enlightenment you bring.

Are you by chance saying that what I heard was likely to be a serious photographer who has a permanent +1.5 exposure compensation dialed into his camera(s) and regardless of the scene or how much or how little white is present or not, he always allows for white being present or not with the +1.5 and just operates his camera as though it was part of what should have been included in his camera when it was manufactured but wasn't? The consensus here in uhh seems to be that such a move would be disastrous. I'm not convinced either way but I'm going to test it out.

Since it would presumably lead to the same EV setting and retain whites and detail, it makes me wonder then that if a person wanted to dial in +1.5 to +2 it would be done by using a white card and dialing +1.5 or using a grey card and setting a -1.5 to -2 underexposure either of which should still offer him white whites and a majority or all of whatever detail is present in his subject? If that's the case, it would sure simplify metering, as I see it. The downside is that it would force everyone away from shooting in manual unless it becomes more convenient to shoot utilizing auto iso as the cameras create increasingly less noise in the near future.

Are you thinking that we may come to a point in the future when we will have some manner of auto post processing machine similar to the film developing/printing machines that will be able to reach back in time and pull up detail in digital images that predated the invention of the machine, kinda like we're doing with the growing dna data banks for all different kinds of investigative reasons? I sure would like such a machine now, please. I'm scaring myself here. I'm just an old geezer trying to slowly surrender over here. I'm not sure I can take the excitement.

Thanks for jumping into the thread with your comments, Timmers. You've given me something new to spend some time looking at if I ever get to be smart enough to not start new threads in this section of uhh using all my spare time logged in. By the way, welcome to uhh. I see you joined up in December '18. You seem to be bringing a form of chaos of your own with your posts. Don't let yourself get cornered by your subjects.

Reply
Jan 12, 2019 06:34:38   #
anotherview Loc: California
 
Re your concern: "I don't think I can get the bright tone from an image that is shot underexposed."

In Adobe Camera Raw, you can use the Targeted Adjustment Tool in conjunction with the HSL Adjustments panel to to brighten colors that appear underexposed. HSL stands for "Hue, Saturation, and Luminance."

Press the T key to bring up the TAT. The cursor will change to a crosshairs and a small circle with a dot in the middle of it.

In the HSL panel, select the Luminance tab.

Place the TAT cursor on an image color area you want to brighten.

While holding down the left button of the mouse, drag the TAT cursor to the right. The selected color will brighten.

If the color looks washed out, then first try selecting the Saturation tab. Reset the Luminance adjustment.
Place the TAT cursor over this color and drag the mouse to the right. This color will saturate more.

Note that getting a color to look natural in relation to the rest of the image may take some further tweaking between Saturation and Luminance. Your eye will tell you the right degree of adjustment.

I hope this suggestion helps.
via the lens wrote:
And, "another view" on the subject. I have noticed, or so it seems, that often when my image has been taken more toward the "dark side," that the image lacks the very bright tone that some of my other images have that are taken more on the "light side." It seems to me that jpg images also have this darker tone. The darker tone is fine with some images but not for those images when I want to say "bright," and "happy," and give it a lighter feeling. I don't think I can get the bright tone from an image that is shot underexposed. But, then again, I could, of course, be wrong.
And, "another view" on the subject. I h... (show quote)

Reply
Page <<first <prev 7 of 8 next>
If you want to reply, then register here. Registration is free and your account is created instantly, so you can post right away.
Main Photography Discussion
UglyHedgehog.com - Forum
Copyright 2011-2024 Ugly Hedgehog, Inc.