At 11:24 PM 6/5/99 -0700, you wrote:
>Does any one know exactly the center focal point of a 24mm f2.8. I know
>it's somewhere towards the back of the lens barrel but what out side
>marking or would it be?
>I'm using this lens for virtual reality panoramic photos and I have one
>of those macro slider gizmos on the the tripod to move the camera back a
>few inchs. Accoriding to Apple's vr video you are susposed to be able
>to tell by lining up objects in view and seeing where this point is.
>I've shot several of these pano vr's and for the most part the stitcher
>usually fixes things rather well but I'm going for perfection here and
>am hoping someone may have seen a diagram of this lens with this point
>indicated by where the image is fliped and projected out of the back
>element. Just give me a marker on the barrel if you know where this is.
>
Hi Philip:
I haven't seen such a diagram but there is a procedure to find out the 'nodal
point' of the lens. It's furnished with the tripod heads sold specifically for
vr work. See if you can find it at www.kaidan.com or I'll try to copy it for
you.
________________________________
Regards,
Denton Taylor
Photogallery at www.dentontaylor.com.
Panoramas and Immersive Imaging at
www.threehundredsixty.com
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