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picard
26th of September 2010 (Sun), 22:06
how do I adjust the F stop on 7D by 1/2 ?

for example, the F stop is 4.5 2

Can the 7D F stop be adjust by increment of 1 1/3 or 1/2 ?

Mac
26th of September 2010 (Sun), 22:11
C.Fn I: Exposure

You can change the option from 1/3 or 1/2 increments.

picard
26th of September 2010 (Sun), 22:13
C.Fn I: Exposure

You can change the option from 1/3 or 1/2 increments.

how far should F stop by changed on 7D to reflect accurate light metering ? 1/2 or 1 1/3

vinnie6756
26th of September 2010 (Sun), 22:16
Depends on your light meter...I have a Sekonic L-358 and it does 1/3's.

how far should F stop by changed on 7D to reflect accurate light metering ? 1/2 or 1 1/3

crn3371
26th of September 2010 (Sun), 22:18
how far should F stop by changed on 7D to reflect accurate light metering ? 1/2 or 1 1/3

Are you talking about exposure compensation? Depends on the subject and the lighting.

Snydremark
26th of September 2010 (Sun), 22:24
how far should F stop by changed on 7D to reflect accurate light metering ? 1/2 or 1 1/3

Can you rephrase the question? F stop doesn't relate to metering accuracy...It only determines the amount of light coming in to the sensor, as it is the aperture setting. Exposure Compensation is a different number and will depend on your lighting situation and metering mode.

picard
26th of September 2010 (Sun), 22:28
ok. I should say the light coming to sensor. I don't know how to rephrase the question. sorry.

someone else was taking light reading from a Minolta incident meter today during my shoot; the meter showed a 1/2 value which I didn't know how to adjust on my camera.

Therefore I was wondering if I should set exposure to 1 1/3 or 1/2.

Snydremark
26th of September 2010 (Sun), 22:46
ok. I should say the light coming to sensor. I don't know how to rephrase the question. sorry.

someone else was taking light reading from a Minolta incident meter today during my shoot; the meter showed a 1/2 value which I didn't know how to adjust on my camera.

Therefore I was wondering if I should set exposure to 1 1/3 or 1/2.

As far as that goes, Mac's answer above was what you need then. C.Fn I, set to 1/2 instead of 1/3.

NinetyEight
27th of September 2010 (Mon), 05:54
You have two choices: (Three if you include use your own meter reading)

1 - Do as people have said, and change your 7D to 1/2 stop settings (see your manual page 206 ;) )

2 - You could always shoot two images, one with each setting and see which one you prefer...

jase1125
27th of September 2010 (Mon), 07:29
I would go for the one that slightly overexposes since in my view the 7D tends to underexpose a bit anyway. You can always adjust in Post and it helps with noise as well.

NinetyEight
27th of September 2010 (Mon), 07:44
I would go for the one that slightly overexposes since in my view the 7D tends to underexpose a bit anyway. You can always adjust in Post and it helps with noise as well.

I doubt you would notice much difference between the 1/3 and 1/2 stop (It's too early to do the maths :-))

artyman
27th of September 2010 (Mon), 07:57
There's 1/6 difference between 1/2 and 1/3 stops, not very much and probably insignificant

tzalman
27th of September 2010 (Mon), 08:39
Therefore I was wondering if I should set exposure to 1 1/3 or 1/2.
Why 1 1/3? Give either 1/3 or 2/3. 2/3 is preferable if it doesn't blow the highlights.