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  • Hey all, just changed over the backend after 15 years I figured time to give it a bit of an update, its probably gonna be a bit weird for most of you and i am sure there is a few bugs to work out but it should kinda work the same as before... hopefully :)

Focal Distance

A

Arnold F.

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I love this feature (if it works like I hope it does). However, I was observing that whilst changing my aperture, my focal distance didn't change. Is there some fundamental I'm missing here?
 
Focal distance doesn't change by adjusting the aperture. Focal distance just means the distance from the sensor to your subject in focus or focal plane (i.e. the feet markings on the lens is your focal distance.). Depth of field is what changes by adjusting the aperture (wider open you are the more shallow the area of focus, and the more you close down the deeper the area of focus becomes). The more you zoom on a lens or put on a longer lens when using primes your angle of view becomes narrower but the focal distance will remain the same given the same setup.

Is that what you mean? Hope it helps...
 
Yes, I mean depth of field but thought the camera was calling it "focal distance." It is expressing what it's calling "focal distance" as a range (not a single measurement) in feet and inches, so I assumed it meant depth of field, however, since it didn't change that's obviously not right. It also changed in blocks, for lack of a better word. That is, it went from, say, 3'-6', 6'-11', 11'-16', etc., and the changes were abrupt from one to another, not on a continuum, seemingly. Those aren't the real distances it expressed but you get the idea.



Matt Ryan said:
Focal distance doesn't change by adjusting aperture. Focal distance just means the distance from the sensor to your subject in focus or focal plane (i.e. the feet markings on the lens is your focal distance.). Depth of field is what changes by adjusting the aperture.

Is that what you mean?
Click to expand...
 
Maybe that is a way of saying for the AF, you can set it up in blocks (focal distance ranges) so it isn't hunting for focus outside of those distances, thus making it easier to get correct and fast focus... That would be my guess
 
What lens are you using? Did you refocus after changing the aperture? What are your settings in the focus menu?
 
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