Battle wrote:
My experience with this kind of thing is to maximize the distance to the object
using a longer lens when possible which reduces the angles and amount of
variation from image to image which in the end tends to overcome the variation
of handheld image capture. For example, can you put the maps on a floor, and
stand on a chair? That would increase the distance from camera to object from
2 feet to 8 feet. Is there a balcony in the room that you could shoot down to
a table on the lower level?
Now we're talking 15 feet or more.
Yes - back in 2014 (which is when this thread is from) I worked the following
out:
https://groups.google.com/forum/#!topic/hugin-ptx/nynP68FT5WA
BugBear
> Would they let you put the camera on a monopole and hold it above your head
to shoot down to the table? That might get you 4 to 6 feet away. Even if all
this were not permissible, maybe you could shoot tethered, and just hold the
camera above your head looking at the computer screen to frame the shot. If you
can shoot the map in two images, then you can probably hold the camera in place
close enough to use the bracket feature to get 3-9 shots from each
position with one shutter press. Chances of getting usable images when
shooting handheld this way increase as others have pointed out.
Also any relief change (from a flat plane) will lead to parallax issues.
Getting the maps to lay flat as possible is more critical the closer you are to
the maps. Do they have a display (drafting) case or table, or other table
large that has a tilting top which will tilt 45 degrees? This would allow you
to stand back from the maps far enough to shoot handheld.
On Tuesday, May 6, 2014 at 4:20:43 AM UTC-4, bugbear wrote:
I am about to visit a record office. Their rules
permit cameras, but not tripods (let alone pano heads!)
I wish to capture the image of some 18th c maps, which are large,
in good detail. The obvious strategy is to take multiple
shots and stitch, but the shots will all be taken from different
position and angles (since they'll be taken freehand).
But since the maps are 2D a stitch should still be possible.
I have tested this approach at home (cheating using a tripod!)
and a road atlas.
<snip>
I would welcome advice.
BugBear
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