[PTGui] Optimal overlap of images

[Dennis]

I use PTGui v8.3.8 Pro and shoot with a Canon 20D--mostly with a 14 or
24mm lens. Is there an optimal overlap percentage that PTGui prefers?

Thank you in advance? --Dennis

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[Joergen Geerds]

On May 20, 1:23 pm, Dennis <mamm...@skyscapes.com> wrote:
> I use PTGui v8.3.8 Pro and shoot with a Canon 20D--mostly with a 14 or
> 24mm lens.  Is there an optimal overlap percentage that PTGui prefers?

ideal is 25-33%, if necessary, 15-40% are acceptable.

at 14mm on a 1.6x camera, you need a minimum of 8 images in portrait
orientation, better 10 images around.
at 24mm, I would suggest 15 images around.

joergen

[l_d_allan]

On May 20, 11:23 am, Dennis <mamm...@skyscapes.com> wrote:
> I use PTGui v8.3.8 Pro and shoot with a Canon 20D--mostly with a 14 or
> 24mm lens.  Is there an optimal overlap percentage that PTGui prefers?

This is one of those questions that the response can be "it depends".

Here are some things this semi-newbie takes into account that incline
me to increase the overlap:
* If I'm hand-holding or using a monopod (reduce chance of ending up
with a gap)
* leaning the camera up or down quite a bit (over about 25
degrees) ... maybe this doesn't or shouldn't matter
* for multi-rows, I'm inclined to use ~50% overlap vertically. This
may not help PTGui, but I find it helps in situtations where I need to
manually add CP's
* when you can tell that distinct CP's are going to be sparse, plan
the adjacent images to help PTGui find CP's, even if this makes for a
lot of overlap
* difficult stitching situations, such as overhead powerlines with sky
background when good CP's are sparse