April 16, 2014, 06:46:42 PM

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Messages - clicstudio

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31
To confirm: you see this issue with the WB set to something other than Auto or Flash?
\
Yes, but it is always a "Fixed" WB. Never Auto.

32
The 50mm 1.2L is one of the hardest lenses to focus, no matter which camera u are using.
At F1.2, the distance between focus and blur is probably 1/8"... I am guessing, but it certainly looks that way.
I bought one a few years back and the next day I returned it. I don't use or have time for manual focusing, so I have to rely on the camera. I always used 1D bodies since 2003 so it should be the best focusing but I would get 5 out 10 shots out of focus...
Lens looks great and has an amazing sharpness at F4.0 and up but not wide open.

Cheers

P

33
The "flash" WB setting is intended to work with speedlights that feed back info to the camera. It should be set at approx 6000K with other flashes. It could be that there is some sort of lack of feed back or faulty feedback between your kit and the camera.

You could set a custom WB. You can take a single shot of a white card and use that to set Custom WB. Then the WB should be set and be consistent. I do this using a color passport and get good consistent results, but any old 18% grey or light grey should do it fine.
Thanks for your comment. But unfortunately it seems nobody understands the issue here. It's not a white balance problem or color inaccuracy. It's random images with the wrong color...
Definitely not flash related problem. Because it happens with any WB setting even without a flash firing.

Well I certainly thought you were saying you were having problems with a "white balance bug". I'm sorry if I have misunderstood your problem that I was trying to help with.

I didn't realise you had tried "any WB setting" I apologies if my attempt to help has waste your time and for not understanding your "issue" better.
You didn't waste my time. We are all helping each other here and trying to learn at the same time... But the original post clearly states the problem. It's white balance shifting in some images, not a white balance color issue.
The samples are contiguous images side by side showing the problem.

Your first post clearly stated you were using flash white balance.  I still suggest that a custom white balance might help, but it seems you do not consider that you can learn anything from my help.

and BTW like someone else said in some of the side by side comparisons you posted the image you consider has a problem looks better to me than the one you have fixed.

I said I used Flash and also ambient light. I didn't fix or process the images. I am merely showing the 2 images taken a second, or less, apart being different.
20 bad images out of 500 doesn't seem like a problem but 5% of anything bad is not good.

Again, this is NOT a white balance accuracy problem...........


34
The "flash" WB setting is intended to work with speedlights that feed back info to the camera. It should be set at approx 6000K with other flashes. It could be that there is some sort of lack of feed back or faulty feedback between your kit and the camera.

You could set a custom WB. You can take a single shot of a white card and use that to set Custom WB. Then the WB should be set and be consistent. I do this using a color passport and get good consistent results, but any old 18% grey or light grey should do it fine.
Thanks for your comment. But unfortunately it seems nobody understands the issue here. It's not a white balance problem or color inaccuracy. It's random images with the wrong color...
Definitely not flash related problem. Because it happens with any WB setting even without a flash firing.

Well I certainly thought you were saying you were having problems with a "white balance bug". I'm sorry if I have misunderstood your problem that I was trying to help with.

I didn't realise you had tried "any WB setting" I apologies if my attempt to help has waste your time and for not understanding your "issue" better.
You didn't waste my time. We are all helping each other here and trying to learn at the same time... But the original post clearly states the problem. It's white balance shifting in some images, not a white balance color issue.
The samples are contiguous images side by side showing the problem.

35
Hmm. Perhaps if you posted 50 or 60 more of those samples it would help to diagnose the problem.   ;)

There are about 5000 "samples" on my website...
Http://www.clicstudio.com

  ;)

36
The "flash" WB setting is intended to work with speedlights that feed back info to the camera. It should be set at approx 6000K with other flashes. It could be that there is some sort of lack of feed back or faulty feedback between your kit and the camera.

You could set a custom WB. You can take a single shot of a white card and use that to set Custom WB. Then the WB should be set and be consistent. I do this using a color passport and get good consistent results, but any old 18% grey or light grey should do it fine.
Thanks for your comment. But unfortunately it seems nobody understands the issue here. It's not a white balance problem or color inaccuracy. It's random images with the wrong color...
Definitely not flash related problem. Because it happens with any WB setting even without a flash firing.

37
... I rather stick with a preset value

My point is that on a Canon body, by selecting Flash as a WB setting, you're not selecting a fixed preset value, just a modified form of Auto WB. 

I wouldn't call this a 'bug' yet. Granted, it should be a fixed color temp with something other than a Canon flash in the hotshoe - but PWs do strange things sometimes, and I bet if you send it to Canon they'll not find an issue.

BTW, what makes you think the issue is with the body and not one of the monolights?

Because it happens with ambient light as well without PW or flashes. It is a random issue. I don't know when it's gonna happen.  :o

38
BTW, Thanx to neuroanatomist for merging the topics. I didn't know how to do that  :D

39
On my screen, the left ones look more realistic. It could just be the flash head output varying slightly for some.
Is not about color accuracy. I'm trying to illustrate a random problem with the WB, not the accuracy.
20 images out of 500 are Different, that is the bottom line.
This happens everyday. Randomly.

40
Anything in the hotshoe?  On a Canon body, setting Flash WB isn't a constant 6000K no tint like it would be if you set it in a RAW converter (other than DPP).  On-camera setting for Flash WB uses color information passed from a Canon flash, so the WB isn't a constant color temp - the idea is to compensate for color temp changes in the flash tube output.  Perhaps with a CyberSync or other 3rd party trigger in the hotshoe, an odd signal comes back occasionally?  You could try setting a Kelvin WB.
I have a pocket wizard mini TT1 in the hot shoe triggering Einstein flashes. No Canon flashes.
I am never happy with the WB at any setting. Auto is usually too cold and since the LCD on th camera is completely inaccurate, trying to get a Kelvin WB using the camera would be impossible. I can try a custom WB but since color temperature shifts according to the power of the flash and ambient light is always different, I rather stick with a preset value and then fix it in Aperture.
I like a warmer WB anyway. Sometimes accurate WB makes skin tones look too pale or greenish, so I like to tweak ot to my taste.

41
Why you do jpg on this kind, or and kind, of Photography??? Is that a space problem? Use DNG with lossy compression, uses about the same space as the JPGs and still RAW and you can fix the WB...

I can Fix the WB on jpg Just fine.
My problem is different. I might have a faulty camera or sensor.

42
I shoot jpg ...

Why?  Just curious.  I haven't shot in JPEG for about three years now.  At some point, I realized that you never know when you're going to want a higher quality version of a shot, and it's a lot easier to shoot it RAW the first time than to go back and try to recreate it.

That and it seems to me that shooting in JPEG format on a 1D* is like driving a Ferrari with an automatic transmission.  :D

Either way, my point was that if you shoot in RAW+JPEG, you have the raw data, so you can tell whether the white balance strangeness is caused by a camera bug or something environmental.  With JPEG, there's no way to tell because you don't have the raw sensor data to compare it with.

I shoot girls. Skin tones always look like crap on RAW. Its hard to make them look natural. I like what I see on the jpg version and can't get even close even tweaking for minutes on a RAW file.
Aperture's RAW processor is really bad. I don't like Lightroom and Photoshop CS6 does a great job but hair and skin always look yellowish and over sharpened. When you shoot models, sometimes TOO MUCH detail is not good... That means more skin corrections and smoothing... Not good for me. I shoot about 30 girls per month so the RAW workflow would be a pain. Not to mention storage. I have 16GB CF cards and I shoot from 300 to 800 images a day. I would need more memory, more hard disk space and more time. Most of my work ends up online anyway. If I know I am going to print something, I'd probably shoot it RAW+jpg.
This problem is not related to the shooting mode. I always shot jpg on my previous 1Ds, 1D Mark II, Mark IIN, Mark III and Mark IV... Never had this problem.
Thanx for your reply

P

43
That's really weird.  Are there any examples you can post?  Do the EXIF tags confirm that the shots were taken at the same WB setting?  If you take the original RAW files and process them with Lightroom, Aperture, Camera RAW, or some other tool at a fixed WB setting, do you get consistent results, or do you still see the same variation?

I shoot jpg, so it's not a processing problem.
 Yes, Color temperature is the same on the Metadata but visually, you can see the difference.
I will try to post some samples tomorrow.
Thanx for your reply

Check out the follow up with samples... http://www.canonrumors.com/forum/index.php?topic=15276.0

44
EOS Bodies - For Stills / 1D X White Balance Bug NOW WITH SAMPLES...
« on: June 08, 2013, 01:09:11 PM »
Follow up of this post: http://www.canonrumors.com/forum/index.php?topic=15249.0

I have a problem with white balance shifting on random images on my 1D X.
White balance is set to Flash, Manual Exposure and Aperture and ISO. NOTHING AUTOMATIC except for AF.
Out of 307 photos I took yesterday, about 8 or 9 have a "colder" white balance. Basically they look less "warm".
I shoot models so I can tell right away because of the skin tones and the over all scene changing.
At first I thought it was a color problem with my Einstein Flashes not keeping up while shooting rapidly (The camera is on Low Speed at 3fps anyway and at about 10% of power, so recycling shouldn't be a problem) but I notice this also happens when using available light.
This happens every day on random images and I am concerned at the moment thinking I might have a faulty sensor or light meter...
I have the latest firmware and use a Canon 24-70 F2.8L II...
Anyone has the same issue? Please let me know.
I am a CPS Gold Member and could send the camera to Canon for a checkup...
BTW I shoot jpg not RAW

As you can now see in the 4 samples (The left being the "off" WB) there is a considerable difference in warmth. Out of 500 images I shot yesterday, 20 were off. I can easily correct the WB in Aperture, but the bug bothers me.
Anyone else has experienced this problem?
Cheers

Pat

45
That's really weird.  Are there any examples you can post?  Do the EXIF tags confirm that the shots were taken at the same WB setting?  If you take the original RAW files and process them with Lightroom, Aperture, Camera RAW, or some other tool at a fixed WB setting, do you get consistent results, or do you still see the same variation?
I shoot jpg, so it's not a processing problem.
 Yes, Color temperature is the same on the Metadata but visually, you can see the difference.
I will try to post some samples tomorrow.
Thanx for your reply

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