On Dec 24, 1:41 pm, kfj <[email protected]> wrote: > What macros do you do?
Not sure I know just yet; I'm just starting out. I'm thinking still life of any sort would be a good starting point with the gear I've described earlier. The DOF is very shallow and the working distances awfully close. > If you want to make focus stacks, the HFOV doesn't matter much: you go > in and out rectilinear and no transformation takes place. Use a rule- > of-thumb value. I see. Good to know, and thanks again. > On the other hand, if you were making macro panoramas, which is a bit > more unusual, you can do a 360 degree panorama, start with some > estimate for the HFOV and optimize for fov, then take the value you > get after optimizing. It doesn't sound like your setup is for > panoramas, though... Too true, though I suppose one could slap together a circular subject of an appropriate diameter to allow the gear to focus, and suspend it around the camera in some fashion. If the HFOV was a critical parameter, this might provide the most precise estimate. > You can also measure the value, if you know where your NPP is. Take a > picture of, say, a horizontal ruler and take a reading of how many cm > of the ruler fits in your image. Let that be w, and d the distance of > the ruler from your NPP. If v is your horizontal field of view, you > have w / ( 2 * d ) = tan ( v / 2 ), so v = 2 atan ( w / ( 2 * d ) ) Great information, Kay. I'll search around for how to find the NPP in a reversed lens and then give this a try. > > Kay Many thanks! Terry -- You received this message because you are subscribed to the Google Groups "Hugin and other free panoramic software" group. A list of frequently asked questions is available at: http://wiki.panotools.org/Hugin_FAQ To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/hugin-ptx
