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Thread started 06 Oct 2008 (Monday) 21:17
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Blown Bright Colors - Is it Just Me?

 
LW ­ Dail
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Oct 06, 2008 21:17 |  #1

I've noticed over the years that bright colors blow out for me. Usually pinks and reds. With the Rebel before and now with the 5D.

I'm sure there's something I could do to minimize the effect, but can't find it.

Help! I'm tired of tossing these images!

Here is one from today of a gorgeous scarlet red dahlia from a neighbor's yard. Every shot is blown and I don't know why! Shot in bright, direct evening sunlight.

Please don't critique the composition! I just used this one 'cuz it shows shadows, the full flower, and some leaves for reference.

Any help will be greatly appreciated!

Here is the EXIF data:

File name
IMG_6797.jpg
Camera Model Name
Canon EOS 5D
Shooting Date/Time
10/6/2008 06:10:15
Tv(Shutter Speed)
1/100Sec.
Av(Aperture Value)
F11
Metering Modes
Evaluative metering
Exposure Compensation
+1
ISO Speed
400
Lens
EF24-105mm f/4L IS USM
Focal Length
90.0 mm
Image size
4368 x 2912
Image Quality
Fine
Flash
Off
White Balance
Auto
AF mode
AI focus AF
Picture Style
Faithful
Parameters
Tone Curve : Standard
Sharpness level : -
Pattern Sharpness : -
Contrast : 0
Sharpness : 0
Color saturation : 0
Color tone : 0
Color matrix
-
Color Space
sRGB


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swampler
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Oct 06, 2008 21:23 |  #2

I think this is your problem:

Exposure Compensation +1

You might also try a neutral picture style.


Steve

  
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Robert_Lay
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Oct 06, 2008 21:27 |  #3

The image does not appear blown, but the histogram says that it is, and we have to trust that, because it is objective and it is fact.

Regardless of the exact character of the lighting, there can be exposure metering problems - usually when the lighting is harsh or contrasty. The image was intentionally given a full f-stop of exposure compensation - so, you surely had some reason for doing that, and yet you are saying that your shots are all blown. I hope you can see the inconsistency here. If your shots are consistently blown, why are you intentionally overexposing by 1 stop?


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midnitejam
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Oct 06, 2008 21:30 as a reply to  @ swampler's post |  #4

Swampler gets it. Try a -1/3 comp.


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Bill ­ Boehme
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Oct 07, 2008 01:05 as a reply to  @ midnitejam's post |  #5

The problem is due to clipping (a condition where pixels in one or more of the the three sensor colors have reached their maxim value) and there are two likely contributors: the first, overexposure, has already been discussed and the second cause is due to another form of clipping, saturation clipping, which happens after capture when the sensor data is converted into a JPG file and results from using a small color space (sRGB) when the captured image has colors that are outside of that space. The best solution for the second problem is to shoot in RAW mode, but if you prefer JPG, then AdobeRGB would be much less likely to encounter saturation clipping.

BTW, saturation clipping is very likely to occur when photographing brightly colored flowers.


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LW ­ Dail
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Oct 07, 2008 03:50 as a reply to  @ Bill Boehme's post |  #6

Well, I'm blaming the exposure compensation on old eyes and vanity.

I obviously ran the flywheel and changed the compensation on the fly and didn't see it because I wasn't wearing my glasses! I'll fix that one and reshoot.

And I'll try Adobe RGB. I think this is my root complaint, barring my screw up with the exposure compensation. You see it in the petals where the color just goes to pot.

Good thing the neighbor cut the flowers for me. Will post new shot with technical changes tonight. I'll even try to compose a shot!

Thanks all for inadvertently telling me to carry my danged glasses, and wear them! I obviously need to add them to my 'duck walk!'


Canon 5D: 24-105mm L IS, 100-400mm L IS. Canon PowerShot ELPH 340HS, Canon GII. Canon AE-1: FD 50mm, 80-200mm. Holga 120N.
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Walczak ­ Photo
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Oct 07, 2008 12:20 |  #7

LW Dail wrote in post #6451648 (external link)
And I'll try Adobe RGB. I think this is my root complaint, barring my screw up with the exposure compensation. You see it in the petals where the color just goes to pot.

Just a few thoughts on Adobe RGB from "the other side of the fence". A lot of folks recommend Adobe RGB because it has a greater color range (gamut) than sRGB but you also have to be careful here to as not many applications other than your camera and Adobe Photoshop actually support Adobe RGB. If you look thru these forums (as well as other photography forums on the net) you will see a great many discussions in regards to this issue. For example people will shoot and edit in Adobe RGB but then don't understand why when they print their images or post them to the forum, they don't look the same. Obviously the problem is due to using different color profiles.

Now before anyone flames me here, let me say that YES, Adobe RGB does have a larger color gamut. I do not debate this issue. But...does everything you shoot have to have this extra color space? sRGB does a perfectly fine job for most things and it's consistant across the board. I shoot with my camera set to sRGB, PS is in sRGB, my monitor and printer profiles are all sRGB and even the two labs I go to use sRGB. In other words, what I see on my camera is generally the same thing I see thru the whole processing process and is what I see at my final output, with little or no variation. More over, I don't think I've ever had a single person look at my images and say "gee...that looks under saturated" or "gee, your saturation looks blown out...you should have used Adobe RGB". You can achieve richly saturated colors with sRGB without blowing them out.

This is just my own personal opinion as always and should only be taken as such, but to me the difference between Adobe RGB and sRGB isn't significant. When you compare the same image shot in each side by side, yes, there is a difference, but that difference is NOT huge (and can usually be made up for in other ways). For most people I think this really just falls under the whole "greed" thing as well. That mental state that tells you "you have to have the most, the biggest, the best...". Think of it this way...a lot of folks even here on POTN will never print anything bigger than a 5x7 of their prints. For all intensive purposes, this can easily be done with even a 3 or 4 megapixel p&s camera (or smaller...you can print a decent 8x10 even from a 1 megapixel), yet a great many people are under the illusion that they have to have that 10 megapixel or higher DSLR and in a few years, those same people are going to be convinced that they have to have the 15 and 20 megapixel cameras that are coming out too just to do the same thing! The same thing is true with this whole color space debate...people want (or push) Adobe RGB because it's "bigger" but the difference really isn't all that extraordinary and considering the disadvantages in the lack of support for it...again just my opinion here, but I think it's a matter of people's greed outweighing their common sense.

The last thing I would say on this matter too is simply this; when you're looking at any given image you shoot, ask yourself "Will the image really be that much better simply by using a different color space on my computer?". Using the original shot as an example here, I would have to ask myself "Would using Adobe RGB as apposed to sRGB really have made that much of a difference?". I'm not trying to be deliberately mean or rude here, but to me the color space used on the camera or in pp would be the least of my worries...the lighting looks to be really harsh, there's some sort of funky shadows in the background and to be completely honest, it's not really that interesting of a flower to begin with. I'm honestly not trying to rude with this, but the "color space" really would not have made much of a difference at all in regards to this shot. It's an ok snap shot of an average flower. There are many other aspects to photography that I would worry about before I would even begin to worry about the whole Adobe RGB versus sRGB thing and again if anything the Adobe RGB is probably going to cause more problems in your processing work flow than it will fix. I would honestly worry more about things like composition and lighting rather than the academics of color space.

Again these are just my own opinions and should be taken as such but I do hope you find some wisdom in my words and I hope they help.

Peace,
Jim


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Bill ­ Boehme
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Oct 07, 2008 15:20 as a reply to  @ Walczak Photo's post |  #8

^^ I would agree with much of your rationale for sticking to sRGB. Much (if not most) of the time, sRGB is completely adequate for printing. Another reason for doing everything in sRGB would be that it is a ralatively safe course to follow when for whatever reason the user doesn't intend to to set up a color managed workflow. The biggest area of difference between AdobeRGB and sRGB is in the green and near-cyan colors so the issue doesn't often rear its head if those colors are not a problem in an image.

One reason for considering AdobeRGB in a CM workflow is that most ink jet printers have a gamut that is larger than sRGB and many with more colors than just the CMYK ink set have gamuts that cover a very large portion of the AdobeRGB colorspace.

Another viable option is to do the initial RAW conversion post processing in a large colorspace in order to minimize the likelihood of clipping related to color space limitations. There is then some opportunity to perform tonal adjustments to reduce saturation when it is a problem. Then, when the image has been converted to a bit mapped format, it could be converted from a large gamut to sRGB with less likelihood of clipping.


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LW ­ Dail
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Oct 08, 2008 06:06 as a reply to  @ Bill Boehme's post |  #9

Hey everyone, thank you SO much for making my head hurt!

I didn't get the shot last night, but you'll love why - a private session with an Elements tutor!!! It was a totally unrelated session, but we did discuss this, so thank you for even letting me know what to even ask.

One thing we noticed was that the photo looked much better on the LCD projector than it did on the screen. Almost as if the shot had too many shades of scarlet red. rrrr

Can't wait to reshoot this tonight with the following differnt parameters:

1. Exposure compensation set normally and -1/3
2. sRGB and AdobeRGB
3. RAW

Which is a whole other can of hurting head - I've tried to avoid RAW because it seems so 'grown up,' intimidating, and a real PITA. Now I have to grow up and face the scary moster! :twisted:


Canon 5D: 24-105mm L IS, 100-400mm L IS. Canon PowerShot ELPH 340HS, Canon GII. Canon AE-1: FD 50mm, 80-200mm. Holga 120N.
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PhotosGuy
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Oct 08, 2008 10:30 |  #10

One thing we noticed was that the photo looked much better on the LCD projector than it did on the screen.

More to make your head hurt! ;)

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Walczak ­ Photo
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Oct 08, 2008 10:51 |  #11

LW Dail wrote in post #6458768 (external link)
3. RAW

Which is a whole other can of hurting head - I've tried to avoid RAW because it seems so 'grown up,' intimidating, and a real PITA. Now I have to grow up and face the scary moster! :twisted:


RAW seems intimidating at first but once you get used to it you're probably going to love it. When I first moved into DSLR's, I too was very reluctant about using RAW. It seemed that the more I read about it in regards to the technical issues, the scarier it seemed! More over, I usually got decent results with jpeg and with my Photoshop skills, I didn't often run into things I couldn't "fix" if I needed to. That said though I also must add that once I took the plung into RAW...I haven't looked back since.

I know there are people out there who absolutely strive for perfection when they're shooting an image. They have to have the exposure, lighting and focus just exactly perfect beyond any and all other considerations. I'm not like that. Because I shoot mostly critters, I'm more concerned with composition than I am with academics and as such, tend to be a "ball park" shooter. This is where RAW is very useful in my opinion. If you miss the perfect exposure by 1/2 stop or so...no sweat (just remember to expose for those highlights!). Shadows too dark? Easy fix :D. Color off a little? No Problem! In my case the process of "creating an image" only starts at the camera by taking the picture...at least half of what I do I do in post processing and RAW makes so much of this a great deal easier and faster with better results all the way around. I do have stuff that I've shot in jpg that I'm quite proud of...and always will be, but RAW is just a much better and much easier tool to work with.

Maybe this will help... Don't think of RAW in terms of "data", "pixels", "information", etc.. Think of RAW in terms of a "hammer" and how that hammer would compare with a nice pneumatic nail gun! Yes, you can certainly build very nice things with a plain old hammer...just as you can create very nice images in jpeg, but that pneumatic nail gun is just sooooooo much easier on the arm...and a lot faster too boot! LOL!!! That's all RAW really is...it's a way to do what you need to do easeir, faster and with better results.

Seriously...don't let the idea of RAW intimidate you. As with things like "levels", "saturation", "curves" and all the other little goodies that make digital imaging so wonderful, RAW is just another tool and it really is quite easy to use once you get the hang of it!

Peace,
Jim


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LW ­ Dail
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Oct 08, 2008 13:17 as a reply to  @ Walczak Photo's post |  #12

Well, I just read an excellent explanation of RAW v .jpg files. OUCH!

http://www.luminous-landscape.com …-series/u-raw-files.shtml (external link)

I'm vascillating between 'Oh Wow!' and longing for the days of simple little silver halides!

I'm leaning towards fighting the scary monster and shooting RAW (the crowd gasps!). Will try tonight and see what happens....

Saw a suggestion to let the camera shoot RAW & .jpg - then use the image as you need. That way you have the RAW file if you need it and the .jpg if you don't.

<thump>

That was my husband hitting the floor when I reminded him of his own words "Memory is Cheap!"


Canon 5D: 24-105mm L IS, 100-400mm L IS. Canon PowerShot ELPH 340HS, Canon GII. Canon AE-1: FD 50mm, 80-200mm. Holga 120N.
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LW ­ Dail
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Oct 08, 2008 20:38 as a reply to  @ LW Dail's post |  #13

Okay, RAW did it, still a bit blown but minor adjustments brought it right back! The exposure comp changes didn't give enough change...

Here's the info and a final image. While still just a picture of a flower with nasty shadows, etc., I feel much better about the ability to walk by something so stunning and capture it, regardless of conditions. Except for the whole RAW thing and having to learn even more stuff!

Thank you all for your help! I love this forum for this reason and it wouldn't happen without each of you, your knowledge, and your willingess to share.

Thank you.

Lora

File Name
IMG_6907.CR2
Camera Model
Canon EOS 5D
Shooting Date/Time
10/8/2008 6:45:41 AM
Shooting Mode
Aperture-priority AE
Tv( Shutter Speed )
1/10
Av( Aperture Value )
11.0
Metering Mode
Evaluative Metering
Exposure Compensation

ISO Speed
200
Lens
EF24-105mm f/4L IS USM
Focal Length
105.0 mm
Image Size
4368x2912
Image Quality
RAW
Flash
Off
Red-eye Reduction
Off
White Balance Mode
Auto
AF Mode
AI Servo AF
Picture Style
Standard
Sharpness
3
Contrast

Saturation

Color tone

Color Space
sRGB
Noise Reduction
Off
File Size
11508 KB

Oh yeah, haven't told hubby about the storage issues, yet!


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Canon 5D: 24-105mm L IS, 100-400mm L IS. Canon PowerShot ELPH 340HS, Canon GII. Canon AE-1: FD 50mm, 80-200mm. Holga 120N.
"Photography is my one recreation, and I think it should be done well." Lewis Carroll

  
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Robert_Lay
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Oct 08, 2008 21:33 |  #14

LW Dail wrote in post #6463029 (external link)
Okay, RAW did it, still a bit blown but minor adjustments brought it right back! The exposure comp changes didn't give enough change...

Here's the info and a final image. While still just a picture of a flower with nasty shadows, etc., I feel much better about the ability to walk by something so stunning and capture it, regardless of conditions. Except for the whole RAW thing and having to learn even more stuff!

Thank you all for your help! I love this forum for this reason and it wouldn't happen without each of you, your knowledge, and your willingess to share.

Thank you.

Lora

File Name
IMG_6907.CR2
Camera Model
Canon EOS 5D
Shooting Date/Time
10/8/2008 6:45:41 AM
Shooting Mode
Aperture-priority AE
Tv( Shutter Speed )
1/10
Av( Aperture Value )
11.0
Metering Mode
Evaluative Metering
Exposure Compensation

ISO Speed
200
Lens
EF24-105mm f/4L IS USM
Focal Length
105.0 mm
Image Size
4368x2912
Image Quality
RAW
Flash
Off
Red-eye Reduction
Off
White Balance Mode
Auto
AF Mode
AI Servo AF
Picture Style
Standard
Sharpness
3
Contrast

Saturation

Color tone

Color Space
sRGB
Noise Reduction
Off
File Size
11508 KB

Oh yeah, haven't told hubby about the storage issues, yet!

This latest image is quite a different picture from the first one. Not only is it less exposed, but the color saturation is way down from the first one.


Bob
Quality of Light (external link), Photo Tool ver 2.0 (external link)
Canon Rebel XTi; EF-S 10-22mm f/3.5-f/5.6 USM; EF-S 18-55 mm f/3.5-f/5.6; EF 28-135mm f/3.5-5.6 IS USM; EF 50mm f/1.4 USM; Canon Powershot G5; Canon AE1(2); Leica R4s; Battery Grip BG-E3; Pentax Digital Spotmeter with Zone VI Mod & Calibration.

  
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PhotosGuy
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Oct 09, 2008 07:57 |  #15

This latest image is quite a different picture from the first one.

And I like the first one better.


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Classic Carz, Racing, Air Show, Flowers.
Find the light... A few Car Lighting Tips, and MOVE YOUR FEET!
Have you thought about making your own book? // Need an exposure crutch?
New Image Size Limits: Image must not exceed 1600 pixels on any side.

  
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Blown Bright Colors - Is it Just Me?
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