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Author Topic: 5D3: is shutter dying?  (Read 2387 times)

Hugo Fisher

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5D3: is shutter dying?
« on: December 03, 2013, 04:32:06 AM »
Hi!

A would like to ask for your opinion about three pictures below. There is a yellow strip on each of them, but is moving from side to side. I think that it is a problem with shutter of my Canon 5D3 - but I am not sure. The reason is that it is not happening always. Mostly it happens under some mixing light conditions, for example bulb light and fluorescent. But if I use a camera outside or in studio, there is no problem at all. So, I am not sure if the problem is really made by shutter (it actually has about 200 000 counts), or by some problem with metering system of white color balance (if it is even possible)..

Thank you for any hints or opinions, what could be possibly wrong.

EXIF info for pictures:

1/500s
f 1,6
3200 ISO
Aparature priority
+ 0,3 EV
auto white balance
RAW
Sigma 35/1,4 Art lens
Canon 5D mk III + 1100D | 17-40/4L | 24-70/2.8L | Sigma 35/1,4 Art | 50/1,4 | 85/1,8 | 70-200/2,8L IS II | 580 EX II |  | Wedding and studio photography | www.honzajezdik.cz | www.facebook.com/jezdik.photo

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5D3: is shutter dying?
« on: December 03, 2013, 04:32:06 AM »

J.R.

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Re: 5D3: is shutter dying?
« Reply #1 on: December 03, 2013, 04:45:55 AM »
This is a common problem when using fast shutter speeds under fluorescent lighting. You are using. Shutter speed that is higher than the cycle time for fluorescent lighting which is probably resulting in the odd color casts. Drop down to below 1/60 sec and you should be just fine.
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Hugo Fisher

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Re: 5D3: is shutter dying?
« Reply #2 on: December 03, 2013, 04:51:01 AM »
This is a common problem when using fast shutter speeds under fluorescent lighting. You are using. Shutter speed that is higher than the cycle time for fluorescent lighting which is probably resulting in the odd color casts. Drop down to below 1/60 sec and you should be just fine.

That sounds like good point. Thank you, I will try!
Canon 5D mk III + 1100D | 17-40/4L | 24-70/2.8L | Sigma 35/1,4 Art | 50/1,4 | 85/1,8 | 70-200/2,8L IS II | 580 EX II |  | Wedding and studio photography | www.honzajezdik.cz | www.facebook.com/jezdik.photo

rpt

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Re: 5D3: is shutter dying?
« Reply #3 on: December 20, 2013, 10:24:40 AM »
This is a common problem when using fast shutter speeds under fluorescent lighting. You are using. Shutter speed that is higher than the cycle time for fluorescent lighting which is probably resulting in the odd color casts. Drop down to below 1/60 sec and you should be just fine.
+1

CFL or fluorescent tube lighting and all that J.R. said...

Pinchers of Peril

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Re: 5D3: is shutter dying?
« Reply #4 on: December 20, 2013, 10:52:18 AM »
Thanks for posting this question.  I've seen the same thing when taking some indoor photos and it's good to know the reason.
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Click

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Re: 5D3: is shutter dying?
« Reply #5 on: December 20, 2013, 11:58:34 AM »
Thanks for posting this question.  I've seen the same thing when taking some indoor photos and it's good to know the reason.

+1

Thanks for this info.

zlatko

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Re: 5D3: is shutter dying?
« Reply #6 on: December 20, 2013, 12:28:27 PM »
This is a common problem when using fast shutter speeds under fluorescent lighting. You are using. Shutter speed that is higher than the cycle time for fluorescent lighting which is probably resulting in the odd color casts. Drop down to below 1/60 sec and you should be just fine.
+1.  This is the exact problem.  The solution is to use 1/60th or slower, or use flash as your main light source.  Or convert to black & white.

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Re: 5D3: is shutter dying?
« Reply #6 on: December 20, 2013, 12:28:27 PM »

rs

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Re: 5D3: is shutter dying?
« Reply #7 on: December 20, 2013, 01:46:40 PM »
This is a common problem when using fast shutter speeds under fluorescent lighting. You are using. Shutter speed that is higher than the cycle time for fluorescent lighting which is probably resulting in the odd color casts. Drop down to below 1/60 sec and you should be just fine.
+1.  This is the exact problem.  The solution is to use 1/60th or slower, or use flash as your main light source.  Or convert to black & white.
If you have to use a fast shutter speed under such lighting, or you have photos you've already taken but have to recover, there is another solution: the white balance will be out from the top of the frame to the bottom (side to side in portrait). Set the WB correct in post for one side, and then apply a graduated filter with adjustments needed for the other WB. With a bit of trial and error (and combining it with possible exposure compensation) it can produce results which are spot on.

ps - this usually first becomes a problem not at the shutter speed to match the frequency of the lights, but at a shutter speed beyond the flash sync speed - at such shutter speeds, the first curtain is still moving when the second curtain is on its way, so you get a slit of light moving down the sensor. If by chance during that time the colour temperature changes from the light source, it'll show up. Slow down the shutter speed so the entire sensor is exposed as one, and the problem will be almost completely gone no matter what happens with the light source.
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fugu82

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Re: 5D3: is shutter dying?
« Reply #8 on: December 20, 2013, 01:54:46 PM »
This is the stuff I read this forum for; thanx to all who share their knowledge!

rpt

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Re: 5D3: is shutter dying?
« Reply #9 on: December 20, 2013, 11:12:46 PM »
This is a common problem when using fast shutter speeds under fluorescent lighting. You are using. Shutter speed that is higher than the cycle time for fluorescent lighting which is probably resulting in the odd color casts. Drop down to below 1/60 sec and you should be just fine.
+1.  This is the exact problem.  The solution is to use 1/60th or slower, or use flash as your main light source.  Or convert to black & white.
Arithmetically if your power line frequency is 60 cycles per second then use 1/60th or 1/30th of a sec. If the frequency is 50 cycles per second then use 1/50th or 1/25th of a sec. Do not use any other setting because you want a whole cycle or two cycles or any other integral multiple of the power lighting cycle. So you could use 1/15th in the US too... Using other settings like 1/40 could cause some parts to have more/less lighting showing up as a band although it may not be as pronounced as in the original post. You still have to edit for colour correction though...

privatebydesign

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Re: 5D3: is shutter dying?
« Reply #10 on: December 21, 2013, 12:31:51 AM »
Is Christmas really coming? I suppose it is..............

Mt Spokane Photography

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Re: 5D3: is shutter dying?
« Reply #11 on: December 21, 2013, 12:39:39 AM »
It only happens for fluorescent lighting using the older non electronic ballasts. 
 
CFL and electronic ballasts operate at about 20,000 Hertz and don't do this.  If you can, update your lighting to electronic ballast and T8 tubes.  There are CR98 tubes available, and they love digital cameras.  with the 20K HZ ballasts, you can't set the shutter too fast and get this.

rpt

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Re: 5D3: is shutter dying?
« Reply #12 on: December 21, 2013, 01:20:58 AM »
I have posted these links before, but they are interesting and relevant.

http://www.sportsshooter.com/message_display.html?tid=20873
http://www.guyrhodes.com/photo/flicker_lapse.gif
http://www.guyrhodes.com/photo/wb_experiment_large.jpg

Had not seen them the first time you posted. Very interesting. Particularly liked the time lapse GIF.



It only happens for fluorescent lighting using the older non electronic ballasts. 
 
CFL and electronic ballasts operate at about 20,000 Hertz and don't do this.  If you can, update your lighting to electronic ballast and T8 tubes.  There are CR98 tubes available, and they love digital cameras.  with the 20K HZ ballasts, you can't set the shutter too fast and get this.

Thanks for correcting me. I did not know that about the electronic ballast. May be some experimentation is in order this weekend :)

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Re: 5D3: is shutter dying?
« Reply #12 on: December 21, 2013, 01:20:58 AM »

Mt Spokane Photography

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Re: 5D3: is shutter dying?
« Reply #13 on: December 21, 2013, 01:32:06 AM »
I use these.  When bought in cases of 25, the price used to be about $100.  I have 12 of them setup for my product photography. 
 
Now, LED lighting  tubes are 5000K, a very good match for sunlight.
 
 I changed about 34 of my cfl bulbs for LED last week.  We like the light much better, and they appear brighter.  I even replaced some 60 watt incandescent with 40 watt LED and those look slightly brighter.  Costco has them for half price locally, $10 for three.
 
http://www.amazon.com/Philips-209056-F32T8-Straight-Fluorescent/dp/B002DR5U9Y/ref=pd_sxp_grid_pt_0_0

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Re: 5D3: is shutter dying?
« Reply #13 on: December 21, 2013, 01:32:06 AM »