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Exposure Compensation question

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mike maryo

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I have a question regarding the exposure compensation.

When I am in either A or S mode, and adjusting the speed or aperature, the camera automatically adjusts the exposure compensation.

EX: If I try to take it at too fast of a speed, it starts compensating.

Is FULL manual the only way to keep the camera from automatically adjusting the compensation?

What exactly from a technical perspective is the exposure compensation doing anyway? Is that basically the same as lightening/darkening in photoshop? Or am I way off?

Thanks again,
Mike in Cincinnati
C-2100UZ B-300
 
Mike Maryo,

THis is a good question! My understanding is that EV is not magic, it still must either manipulate shutter speed or aperature. In aperature priority, the EV will affect shutter speed and vice versa in shutter priority. In manual, EV compensation is not available.

Basically, when you set an EV, the camera meters the scene and determines the light requirements for the shot and THEN increases the amount of light entering the CCD with (+) values and it decreases the amount of light entering the CCD with (-) values. The camera does this my manipulating shutter speed or aperature. THe number that appears in the upper right lets you know how far from the metered exposure the camera is set. The number blinks either -3 or +3 to indicate that the present settings are greater or less than 3 stops from the cameras metered exposure.

I hope I have this right. If not, someone let me know!

jim

wrote:
mike maryo said:
I have a question regarding the exposure compensation.

When I am in either A or S mode, and adjusting the speed or
aperature, the camera automatically adjusts the exposure
compensation.

EX: If I try to take it at too fast of a speed, it starts
compensating.

Is FULL manual the only way to keep the camera from automatically
adjusting the compensation?

What exactly from a technical perspective is the exposure
compensation doing anyway? Is that basically the same as
lightening/darkening in photoshop? Or am I way off?

Thanks again,
Mike in Cincinnati
C-2100UZ B-300
Click to expand...
--
galleries at: http://www.pbase.com/sandman3
 
After my last adventures ,of trying to find out ,how can I adjust the camera manually for manual expose ,I have end up that by using the BKT mode ,you are in one safest path , and you gain some time for exploration on the manual settings , with out the fear that you will loose one shot , because of the low light .
Sandman said:
THis is a good question! My understanding is that EV is not magic,
it still must either manipulate shutter speed or aperature. In
aperature priority, the EV will affect shutter speed and vice versa
in shutter priority. In manual, EV compensation is not available.

Basically, when you set an EV, the camera meters the scene and
determines the light requirements for the shot and THEN increases
the amount of light entering the CCD with (+) values and it
decreases the amount of light entering the CCD with (-) values.
The camera does this my manipulating shutter speed or aperature.
THe number that appears in the upper right lets you know how far
from the metered exposure the camera is set. The number blinks
either -3 or +3 to indicate that the present settings are greater
or less than 3 stops from the cameras metered exposure.

I hope I have this right. If not, someone let me know!

jim

wrote:
Sandman said:
I have a question regarding the exposure compensation.

When I am in either A or S mode, and adjusting the speed or
aperature, the camera automatically adjusts the exposure
compensation.

EX: If I try to take it at too fast of a speed, it starts
compensating.

Is FULL manual the only way to keep the camera from automatically
adjusting the compensation?

What exactly from a technical perspective is the exposure
compensation doing anyway? Is that basically the same as
lightening/darkening in photoshop? Or am I way off?

Thanks again,
Mike in Cincinnati
C-2100UZ B-300
Click to expand...
--
galleries at: http://www.pbase.com/sandman3
Click to expand...
--
C2100 - ZIO USB - HP970CXI - P400 - Sanyo twicell
 
I think that this is a great question.

I am a novice with digital cameras and with photography in general. Since I bought my digital I started to read up on photography (by the way the K-I-S-S Guide to Photography is excellent for beginners to photography in general and even discusses digital stuff too- ISBN 0789480697) to figure out how exposure works. So I learned about shutter speed and its relation to aperture (thanks to KISS) and it was all beginning to come together. Then exposure compensation was thrown in and I became confused.

I would really like to know if Jim is correct. If so, then what does exposure effect on digital cameras that do not give you the option of aperture or shutter priority?

Cheers

Terry
olyboy said:
olyboy said:
Mike Maryo,

THis is a good question! My understanding is that EV is not magic,
it still must either manipulate shutter speed or aperature. In
aperature priority, the EV will affect shutter speed and vice versa
in shutter priority. In manual, EV compensation is not available.

Basically, when you set an EV, the camera meters the scene and
determines the light requirements for the shot and THEN increases
the amount of light entering the CCD with (+) values and it
decreases the amount of light entering the CCD with (-) values.
The camera does this my manipulating shutter speed or aperature.
THe number that appears in the upper right lets you know how far
from the metered exposure the camera is set. The number blinks
either -3 or +3 to indicate that the present settings are greater
or less than 3 stops from the cameras metered exposure.

I hope I have this right. If not, someone let me know!

jim

wrote:
olyboy said:
I have a question regarding the exposure compensation.

When I am in either A or S mode, and adjusting the speed or
aperature, the camera automatically adjusts the exposure
compensation.

EX: If I try to take it at too fast of a speed, it starts
compensating.

Is FULL manual the only way to keep the camera from automatically
adjusting the compensation?

What exactly from a technical perspective is the exposure
compensation doing anyway? Is that basically the same as
lightening/darkening in photoshop? Or am I way off?

Thanks again,
Mike in Cincinnati
C-2100UZ B-300
Click to expand...
--
galleries at: http://www.pbase.com/sandman3
Click to expand...
--
C2100 - ZIO USB - HP970CXI - P400 - Sanyo twicell
Click to expand...
 
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