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Bruce
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Canon D... Battery Question

Sun Nov 02, 2003 4:57 pm

When a battery is very low, does it affect the quality of the image recorded by the sensor? i.e., grain, focus, lighting, etc. And when I say "very low", I mean that it had already shut down due to low battery (batt indicator flashing then dead) and I left it off for 30 seconds or so, giving it time to recover a little juice, and then turn it on and take a pic.

The reason I ask, is I was shooting some non-aviation stuff (city skyline after dark) AFTER shooting planes all day, and the camera batt was pretty much dead, but I tried to squeeze every ounce out of it and now, my night exposure shots dont look very good. I have done them before, as you can see on my website, and never had objectionable grain but these pics are just bad (shot at ISO 100 !!!!) so I was wondering about a connection between the batt and the pics..........


bruce
Bruce Leibowitz - Jackson, MS (KJAN) - Canon 50D/100-400L IS lens
 
ckw
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RE: Canon D... Battery Question

Sun Nov 02, 2003 9:35 pm

Don't see how a low battery would have an effect on noise levels, but I'd guess that if you've let the battery run that low pretty much any function of the camera could be at risk or unpredictable. My suggestion is that since the shutter is held open by the use of battery power, perhaps the shutter is closing prematurely, resulting in underexposure, which when "normalised" in post processing will look grainy.

Simple solution - always have a spare battery! Don't forget as the weather gets colder, battery life will be reduced - a spare kept in a warm inside pocket might get you out of trouble and/or give you a chance to warm the cold battery for a but more life.

Cheers,

Colin
Colin K. Work, Pixstel
 
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Bruce
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RE: Canon D... Battery Question

Mon Nov 03, 2003 2:11 am

does it matter which brand battery i buy? I only have one and was not near a place where it could be charged.

How many pics do you get from a battery? Here are my stats from yesterday: Started with full overnight charge. 265 frames shot. Flash not used. Temp. was mid 70s all day. Did not review every one. 15 out of 265 were long exposure with self-timer; battery died the first time after 252 shots including only a couple self-timer shots. Do you think I should have gotten more life from a battery given this type of use?

I dont think the shutter closed prematurely - I heard it click up and click down. I would not say these pics look underexposed.

bruce
Bruce Leibowitz - Jackson, MS (KJAN) - Canon 50D/100-400L IS lens
 
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RE: Canon D... Battery Question

Mon Nov 03, 2003 2:19 am

I guess it could effect things if you are using autofocus, and obviously the speed of the shutter, metering, intensity of flash, etc etc..
 
ckw
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RE: Canon D... Battery Question

Mon Nov 03, 2003 3:32 am

I think I would expect 400 in ideal conditions - which means no review. This can really hot the battery, and depends on the number of shots you review, and how long you keep the LCD illuminated.

AF is another variable drain - tracking an aircraft in servo mode will make a heavier hit than using single shot mode on a static subject.

Battery brand doen't seem to make much difference - though perhaps life expectancy may be less on non-Canon brands. Don't know (yet).

Cheers,

Colin
Colin K. Work, Pixstel
 
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RE: Canon D... Battery Question

Mon Nov 03, 2003 8:04 pm

All the more reason to carry a spare i have three two for the pro pack and a third to get me thru an emergency
 
triple7300
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RE: Canon D... Battery Question

Mon Nov 03, 2003 10:54 pm

Hi,
using the D60 since over 1 year and never had the problem with the battery or other things as you discribed.I am carrying always spare battery with me.But I change the battery only if the camera doesn`t turn on anymore.

Andy
 
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Bruce
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RE: Canon D... Battery Question

Tue Nov 04, 2003 3:01 pm

Well, I have had mine for a year and 5 months but i bought it used, so the guy may have had it close to a year (maybe more) before that. So maybe it is getting a little old.


bruce
Bruce Leibowitz - Jackson, MS (KJAN) - Canon 50D/100-400L IS lens

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