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Calculating Max Shift

dougpeterson

Workshop Member
Thanks Doug. Nice charts! The first (bottom one) raises a few questions. The yello square that represents "2 Vertical Frame Stitch - Left/Right 15mm overlap 6.8mm)": Is that for the sensor in portrait mode? It looks like it must be.
And the "15mm [Overlap: 6.8mm]", for the P45+ in portrait mode the horizontal is 37mm. Moving it over 15mm leaves 22mm overlap from the center position.
So I must be missing something.

That said, wonderful graphics.
Thanks,
Bob
You're very welcome. This is a utility we created in house when we found none of the charts/graphics from the manufacturers were sufficient/flexible enough. It took us a good amount of time to create but I think it works well to give a easily understandable but very powerful visual.

The legend "two vertical frames" is meant to denote "two portrait-orientation frames" - so yes. That is the final image made from two vertical frames stitched together.

The left frame is moved 15mm left. The right frame is moved 15mm right. That means a total of 30mm of movement. So the approximately 37mm worth of width becomes approximately 7mm of overlap. 37mm - 15mm - 15mm = 7mm. Easy to overlook without such a graphical representation eh? :)

I've attached another illustration showing both of the vertical frames and how much they overlap after opposing 15mm movements (left/right).



Doug Peterson (e-mail Me)
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rga

Member
Very VERY cool.
Based on this it seems that to cover the full range with the lens/sensor combo illustrated, only 2 exposures are really needed.

I think prevailing thought on this is that for CS5 to stitch, one should overlap sections by about 1/3. I'm going to run out tonight and see what happens with just two exposures; one far right and one far left. If it works that's 1/3 less work (initial exposure, LCC exposure, card/disk storage, post processing time, etc.) which would be awesome! :bugeyes:

Thanks for the further clarification Doug. Truly appreciated,
Bob

You're very welcome. This is a utility we created in house when we found none of the charts/graphics from the manufacturers were sufficient/flexible enough. It took us a good amount of time to create but I think it works well to give a easily understandable but very powerful visual.

The legend "two vertical frames" is meant to denote "two portrait-orientation frames" - so yes. That is the final image made from two vertical frames stitched together.

The left frame is moved 15mm left. The right frame is moved 15mm right. That means a total of 30mm of movement. So the approximately 37mm worth of width becomes approximately 7mm of overlap. 37mm - 15mm - 15mm = 7mm. Easy to overlook without such a graphical representation eh? :)

I've attached another illustration showing both of the vertical frames and how much they overlap after opposing 15mm movements (left/right).



Doug Peterson (e-mail Me)
__________________

Head of Technical Services, Capture Integration
Phase One Partner of the Year
Leaf, Leica, Cambo, Arca Swiss, Canon, Apple, Profoto, Broncolor, Eizo & More

National: 877.217.9870 *| *Cell: 740.707.2183
Newsletter | RSS Feed
Buy Capture One 6 at 10% off

Masters Series Workshop:
New England Landscape - Fall Color (Oct 5-8)
 

LonnaTucker

Member
Generally the wider the lens, the more overlap you'll need or you'll have a nightmare trying to stitch without errors. I prefer the Photomerge Reposition method in PS CS5 (or CS4). With my 35XL I would shoot at least 3 frames - 12L, Center, 12R. It's not really a big deal to shoot another frame in the middle.

The 47mm XL is a dream for stitching as you can see from Doug's chart. It's my first choice usually, since it can reach all most every corner for multi-row stitching purposes.
 
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