57056Re: Questions shooting panos in low light & busy environments
- Oct 26, 2013Am 26.10.2013 00:25, schrieb lovefilm@...:
> I've taped my lens to the point I feel is the best focus at f8 - aPast infinity? for f/8 it should be a bit nearer, at hyperfocal
> little past infinity.
distance, which is about 32cm using classical calculation with 0.025mm
circle of confusion. However, situation is a bit different for fisheyes
and zoomable panoramas. See http://wiki.panotools.org/Depth_of_Field for
> But do I need to adjust the Sigma's focus when opening it up to lowerClassical hyperfocal would be 47cm for f/5.6 and 65cm for f/4, but see
> f-stops? Would it even make a difference? I like to get objects of
> interest as close as possible to the camera because such a wide lens
> makes everything appear so distant.
> Another question is using a flash in such environments. Are thereYou'll improve with an external flash, but you need a good diffusor to
> any specific techniques (or preferred equipment ) to using a flash
> when shooting a pano? Currently all I have is my camera's built in
> flash, which leaves an ugly shadow in the bottom middle portion of
> the image when using the Sigma 8mm. Would a speed light make a
> difference or still cause the same type of shadowing when used with
> the Sigma 8mm?
evenly light such a wide lens. A cheap solution is a piece of
translucent plastic in front of the flash. A better solution is pointing
the flash backwards on a white styrofoam or the like fixed up and behind
the camera at some distance. The larger the better, to avoid shadow of
the tripod. If you are indoors and have a white ceiling you can point
the flash up to the ceiling behind the camera. Take care not to light
the zenith directly, or you get a bright spot there.
But with a flash you still have the problem that far away objects are
less bright than near ones, especially outdoor.
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