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Camera conference General and model-specific E-System camera chat.

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  #16  
Old 24th April 2011
jamie allan jamie allan is offline
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Re: Hyperfocal Distance

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Originally Posted by snaarman View Post
Checking with exposureplot I find I am a f8 maniac. The vast majority of my snaps are done at f8 +- 1 stop.

Creature of habit?

Pete
I just tried this for the first time and found that by far I'm
Focal Length approx 30mm
Iso 100
Aperture f6
Shutter speed 1/80

Makes you think why we buy all this kit doesn't it?
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Old 24th April 2011
ozzie ozzie is offline
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Re: Hyperfocal Distance

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Originally Posted by Ian View Post
By f/8 you are starting to lose resolution through diffraction softening. f/8 is like f/16 on full frame - do you need more depth of field than that? At a moderate wide angle of 18mm, at f/8, the hyperfocal distance is down to 9 feet. At 12mm it's down to 4 feet.

Ian
Thanks Ian
Sounds like I am not even the same ball park. I will start using lower fstop and
see if things get better. I must admit that I have been happy so far with my images although some are a bit soft and I think you have answered that question for me.
Thanks again
John
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  #18  
Old 25th April 2011
maccabeej maccabeej is offline
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Re: Hyperfocal Distance

Interestingly the DOFMaster calculator on their site shows 7.91 ft as the hyperfocal distance for 12mm at F4. If you change the camera to an FF like the C****n 1D etc and enter 24mm and F8 you get 7.95ft which is marginally different. I presume, without doing the research and resorting to pythagaros that the diagonals of FF are not exactly 2x 4/3rds or the calculator is internally inconsistent. I have the DOFMaster app on my iphone which I have not yet used in anger so it is worth knowing that it may not be accurate.
Jim
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  #19  
Old 25th April 2011
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Ian Ian is offline
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Re: Hyperfocal Distance

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Originally Posted by maccabeej View Post
Interestingly the DOFMaster calculator on their site shows 7.91 ft as the hyperfocal distance for 12mm at F4. If you change the camera to an FF like the C****n 1D etc and enter 24mm and F8 you get 7.95ft which is marginally different. I presume, without doing the research and resorting to pythagaros that the diagonals of FF are not exactly 2x 4/3rds or the calculator is internally inconsistent. I have the DOFMaster app on my iphone which I have not yet used in anger so it is worth knowing that it may not be accurate.
Jim
There are a lot of approximations in photography arithmetic, so I think this is within the margin of error - it's less than half an inch

Ian
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  #20  
Old 25th April 2011
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Re: Hyperfocal Distance

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Originally Posted by David M View Post
Not really, I suspect you're trying to get the best out of your lenses, even if you're doing it subconsciously.

Checking Lightroom the vast majority of mine are f5.6 to f8.
Yes, that's a very sensible range

Ian
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