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Over/underexposing cameras
Some people say that their camera over- or underexposes. How do they know that? Do they mean that every picture they take is always over- or underexposed? Do they come to this conclusion by watching the histogram always passing the left or right wall?..

Comments (6)

Linslus wrote:.

Some people say that their camera over- or underexposes. How do theyknow that? Do they mean that every picture they take is always over-or underexposed? Do they come to this conclusion by watching thehistogram always passing the left or right wall?.

I remember before I bought my Canon 400D that the forums were thick with users who thought it underexposed. I guess they were looking at the histogram. My 400D doesn't underexpose. Well, no more than it overexposes..

I think much of it is user error/inexperience (though not always). And it's very easily solved with a spot of exposure compensation in any case..

Androohttp://Androo.smugmug.com..

Comment #1

Linslus wrote:.

Some people say that their camera over- or underexposes. How do theyknow that? Do they mean that every picture they take is always over-or underexposed? Do they come to this conclusion by watching thehistogram always passing the left or right wall?.

Yes, and yes. There have been complaints that some particular camera models don;t meter accurately, which is easy to see from the histogram being biased too far to the left (underexposure) or right (overexposure), and is easy to correct by dialling in some exposure compensation and leaving it there..

My Pentax K100D underexposes a little (to my eyes...) and I have +0.3 stops of exposure compensation set always. Note that this may be a deliberate choice by the camera manufacturer to prevent overexposure and blown highlights, which look much uglier than lack of shadow detail in an underexposed area. Your eye is drawn to bright parts of a picture. So (deliberate) slight underexposure will help to prevent those blown highlights which plague digital sensors, and is easily compensated for in photoshop by a single click..

Best wishesMike..

Comment #2

Linslus wrote:.

Some people say that their camera over- or underexposes. How do theyknow that?.

Who knows?.

Only decent way of knowing is shooting something monochromatic uniformly lit that fills the frame and look at the histogram..

Do they mean that every picture they take is always over-or underexposed? Do they come to this conclusion by watching thehistogram always passing the left or right wall?.

That's a different story  it might be user error, matrix metering error, etc..

Comment #3

As far as I know no dslr under or over exposes..

The user must know what the meter is doing how it is doing it why it makes certain decisions how it is processing the info and how it is presenting the info to the user.unless the above is known any talk of under or overexposing is meaningless...

Comment #4

Linslus wrote:.

Some people say that their camera over- or underexposes. How do theyknow that? Do they mean that every picture they take is always over-or underexposed? Do they come to this conclusion by watching thehistogram always passing the left or right wall?.

The good thing about these forums is that you don't need to talk hypothetically. There are lots of real cases being discussed..

See:.

Http://forums.dpreview.com/...forums/read.asp?forum=1022&message=28606098.

Http://forums.dpreview.com/...forums/read.asp?forum=1018&message=28610288.

Anandahttp://anandasim.blogspot.com/http://olympuse510.wikispaces.com/http://picasaweb.google.com/AnandaSim/http://www.flickr.com/photos/32554587@N00/..

Comment #5

You just proved Gary's point - those are people who don't understand how their camera meters. The camera only does what the photographer tells it to do..

AnandaSim wrote:.

Linslus wrote:.

Some people say that their camera over- or underexposes. How do theyknow that? Do they mean that every picture they take is always over-or underexposed? Do they come to this conclusion by watching thehistogram always passing the left or right wall?.

The good thing about these forums is that you don't need to talkhypothetically. There are lots of real cases being discussed..

See:.

Http://forums.dpreview.com/...forums/read.asp?forum=1022&message=28606098.

Http://forums.dpreview.com/...forums/read.asp?forum=1018&message=28610288.

Anandahttp://anandasim.blogspot.com/http://olympuse510.wikispaces.com/http://picasaweb.google.com/AnandaSim/http://www.flickr.com/photos/.

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Comment #6

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