Where is infinity?

Started Feb 28, 2013 | Questions thread
EinsteinsGhost Forum Pro • Posts: 11,977
Re: Where is infinity? measure it.

OldClicker wrote:

" Generally when speaking of infinity focus on a lense one means the lense is set to focus at its hyperfocal distance."

Are sure about that? You cannot focus past the assumed 'hyperfocal distance'?

Actually, hyper focal distance is the minimum distance to focus at, to achieve a DoF that extends to infinity (and half the distance to the point in focus). So, if you have hyper focal distance for a setting of 10 ft, you can focus at 10 ft, or 20 ft. The difference will be that in the former (10 ft) the DoF will extend from 5 ft in front of you to infinity whereas in the latter, it will be from 10 ft in front to infinity.

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