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alatoo60
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Re: Peter Lik Comedy image


I did some research on this image:






EXIF info is published here.
According to the size ratio (given saguaros are about 3 m tall) and lunar angular diameter being ~ 30\', the distance to saguaros should be about 1200 m. The DOF calculation for this data confirms that all objects located between 841 m to 2091 m will be sharp - but it does not extended to infinity, so per EXIF, Moon would be out of focus.
My other concern is 1/6 sec exposure at ISO 200 and f/16. Both from my experience, and from data from Moon exposure calculator, it will result in blurry Moon image.
Please correct me if I am wrong and there is a mistake in my calculation.

And this is one of mine - well, yes, a composite.








Feb 08, 2012 at 04:09 PM
alatoo60
Offline
Upload & Sell: Off
Re: Peter Lik Comedy image


I did some research on this image:






EXIF info is published here.
According to the size ratio (given saguaros are about 3 m tall) and lunar angular diameter being ~ 30\', the distance to saguaros should be about 1200 m. The DOF calculation for this data confirms that all objects located between 841 m to 2091 m will be sharp - but it does not extended to infinity, so per EXIF, Moon would be out of focus.
My other concern is 1/6 sec exposure at ISO 200 and f/16. Both from my experience, and from data from Moon exposure calculator, it will result in blurry Moon image.
Please correct me if I am wrong and there is a mistake in my calculation.



Feb 08, 2012 at 04:07 PM





  Previous versions of alatoo60's message #10324905 « Peter Lik Comedy image »