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Live View exposure differences?
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Apr 15, 2014 23:23:06   #
Erik_H Loc: Denham Springs, Louisiana
 
Ok, so I got bored and was wondering about the differences in focusing methods and which one gave the sharpest results. So I tried a quick test and shot my calendar using first; manual focus through the viewfinder, then; manual focus using live view zoomed @ 100%, then auto focus. All shots were taken with my D7000 and 85mm 1.4 lens, mirror up with delay mode on using a wireless remote in a tripod. In looking at the results I noticed that the shots taken in live view were exposed slightly darker than the other two shots in the series. Curious, I took a couple more three shot series of different subjects with the same results, the L.V. shots were always slightly darker. Has anybody ever noticed this happening? The difference isn't much but it is there.

Manual focus through viewfinder
Manual focus through viewfinder...
(Download)

Manual focus, Live View @ 100% zoom
Manual focus, Live View @ 100% zoom...
(Download)

Auto Focus
Auto Focus...
(Download)

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Apr 15, 2014 23:34:58   #
tainkc Loc: Kansas City
 
Can't answer the darkness issue, but I would have liked to have seen you do one in manual focus using the LCD screen.

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Apr 15, 2014 23:43:08   #
Erik_H Loc: Denham Springs, Louisiana
 
The second one is m.f. using the LCD screen zoomed in to 100%.

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Apr 16, 2014 00:05:22   #
tainkc Loc: Kansas City
 
Erik_H wrote:
The second one is m.f. using the LCD screen zoomed in to 100%.
Oh, o.k..

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Apr 16, 2014 05:47:11   #
Normanicus Loc: Glasgow : Scotland
 
When using live view you should cover up the eye piece of the view finder as light can enter there during exposure.

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Apr 16, 2014 07:26:37   #
SonyA580 Loc: FL in the winter & MN in the summer
 
This has been discussed before. There is a difference in exposure in some cameras between using the eyepiece (EVF or OVF) and using live view. It happens on my Sony A580. It has nothing to do with the eyepiece being uncovered.

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Apr 16, 2014 07:30:40   #
Normanicus Loc: Glasgow : Scotland
 
It does make a difference with Canon DSLR's .

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Apr 16, 2014 07:33:19   #
anotherview Loc: California
 
Ditto.
Normanicus wrote:
It does make a difference with Canon DSLR's .

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Apr 16, 2014 09:34:37   #
Giugly01 Loc: Woodstock, NY
 
Normanicus wrote:
When using live view you should cover up the eye piece of the view finder as light can enter there during exposure.



:thumbup: Yup

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Apr 16, 2014 09:35:33   #
Giugly01 Loc: Woodstock, NY
 
SonyA580 wrote:
This has been discussed before. There is a difference in exposure in some cameras between using the eyepiece (EVF or OVF) and using live view. It happens on my Sony A580. It has nothing to do with the eyepiece being uncovered.


Not according to the literature... unless you have a reference... would appreciate knowing.

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Apr 16, 2014 10:41:28   #
rpavich Loc: West Virginia
 
they look the same to me....maybe 1/10 stop difference?

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Apr 16, 2014 11:06:48   #
SonyA580 Loc: FL in the winter & MN in the summer
 
Giugly01 wrote:
Not according to the literature... unless you have a reference... would appreciate knowing.


I searched for the previous discussions but couldn't locate it. I know for sure it was discussed previously and several members, including myself, concurred that is was happening. As I recall, it was something in the neighborhood of 1/3 stop difference that actually showed up in the meter readings.

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Apr 16, 2014 11:35:05   #
Normanicus Loc: Glasgow : Scotland
 
The issue of covering the eye piece is particularly important with long exposure times when more light can enter via the unblocked eyepiece than through the lens.

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Apr 16, 2014 11:44:17   #
Giugly01 Loc: Woodstock, NY
 
Normanicus wrote:
The issue of covering the eye piece is particularly important with long exposure times when more light can enter via the unblocked eyepiece than through the lens.



:thumbup:

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Apr 16, 2014 12:05:12   #
tom hughes Loc: Phila Pa
 
try the same test on a subject 100 yds away and you will find your answer.

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