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FORUMS Canon Cameras, Lenses & Accessories Canon G-series Digital Cameras 
Thread started 10 Oct 2013 (Thursday) 12:19
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G1X Question regarding Av and P mode

 
hemang
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105 posts
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Location: Mumbai
     
Oct 10, 2013 12:19 |  #1

I was taking some pictures of my daughter against the wall at night, under incandescent lamp, using flash.
In Av mode, with aperture at 4.5, the image was very dull. But if I upped the flash power to next step, it would be too much. It was taking ISO (set on Auto) as 1600.
Then I put it on P mode and the same picture was much brighter, though colors a bit "dynamic" rather than natural. The aperture was 4.5 but ISO was 640.
My question is, why this difference? If I set aperture @ 4.5 in Av, why is the ISO and final result so different.
Also, in Av mode, the flash power has only 3 steps and default seems to be least, whereas in P mode flash power has 12 steps from -2 to 2.


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GordonSBuck
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Oct 10, 2013 14:15 |  #2

With my own G1X, when using the built-in flash, flash compensation is -2 to +2 in 1/3 steps for P,Tv and Av modes but 1/3, 2/3 or 3/3 power (that is, 3 settings are available) in Manual exposure.


Gordon
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xhack
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Oct 11, 2013 04:20 |  #3

Yet attach even a lowly 270EX Mk 1 to the hot-shoe, and you get 1/1 > 1/64 in Manual. In AV or P you get +3 > -3 adjustment stops in 1/3 steps.


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mark2009
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Oct 11, 2013 05:37 as a reply to  @ xhack's post |  #4

I use p mode with slow sync flash for people shots and they come out great.




  
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Rich ­ Road
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Oct 12, 2013 13:54 as a reply to  @ mark2009's post |  #5

If you turn on the flash in P mode, I think the ISO peaks at 640.




  
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hemang
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Location: Mumbai
     
Oct 13, 2013 23:10 |  #6

mark2009 wrote in post #16362479 (external link)
I use p mode with slow sync flash for people shots and they come out great.

Rich Road wrote in post #16365644 (external link)
If you turn on the flash in P mode, I think the ISO peaks at 640.

So is P mode better for indoor people shots?


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Rich ­ Road
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Oct 14, 2013 21:46 |  #7

hemang wrote in post #16368898 (external link)
So is P mode better for indoor people shots?

I don't know if it's better, but I know it will take me
some time and lost shots to learn to use the flash in manual.
guess there's a reason why flash photography is a course all on its own




  
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G1X Question regarding Av and P mode
FORUMS Canon Cameras, Lenses & Accessories Canon G-series Digital Cameras 
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x 1600
y 1600

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