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Thread started 26 Sep 2010 (Sunday) 21:06
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how do I adjust the F stop on 7D by 1/2 ?

 
picard
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Sep 26, 2010 21:06 |  #1

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 ?


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Mac
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Sep 26, 2010 21:11 |  #2

C.Fn I: Exposure

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


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picard
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Sep 26, 2010 21:13 |  #3

Mac wrote in post #10983442 (external link)
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


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vinnie6756
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Sep 26, 2010 21:16 |  #4

Depends on your light meter...I have a Sekonic L-358 and it does 1/3's.

picard wrote in post #10983455 (external link)
how far should F stop by changed on 7D to reflect accurate light metering ? 1/2 or 1 1/3




  
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crn3371
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Sep 26, 2010 21:18 |  #5

picard wrote in post #10983455 (external link)
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.




  
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Snydremark
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Sep 26, 2010 21:24 |  #6

picard wrote in post #10983455 (external link)
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.


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picard
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Sep 26, 2010 21:28 as a reply to  @ Snydremark's post |  #7

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.


Canon 1DM4,7D, Rebel XT
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Snydremark
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Sep 26, 2010 21:46 |  #8

picard wrote in post #10983568 (external link)
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.


- Eric S.: My Birds/Wildlife (external link) (7D MkII/5D IV, Canon 10-22 f/3.5-4.5, Canon 24-105L f/4 IS, Canon 70-200L f/2.8 IS MkII, Canon 100-400L f/4.5-5.6 IS I/II)
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NinetyEight
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Sep 27, 2010 04:54 |  #9

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...


Kev

  
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jase1125
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Sep 27, 2010 06:29 |  #10

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.


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NinetyEight
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Sep 27, 2010 06:44 |  #11

jase1125 wrote in post #10985651 (external link)
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 :-))


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artyman
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Sep 27, 2010 06:57 |  #12

There's 1/6 difference between 1/2 and 1/3 stops, not very much and probably insignificant


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tzalman
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Sep 27, 2010 07:39 |  #13

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.


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how do I adjust the F stop on 7D by 1/2 ?
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