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Old Apr 28, 2006, 9:49 AM   #1
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Hi all you coolpixer's

Ive just been slaving away (as usual) in front of photoshop CS2 and wanted to share my results.

As your fully aware of the barrel distortion frustrations we have when it comes to a good ol' stitching i set about to get some facts and figures down, rather than relying on guestimations.
With this, i have compiled a reference chart for use with the lens distort feature in Photoshop CS2.

Barrel distortion correction figures for Nikon Coolpix 8800.
- Applicable to Photoshop CS2 lens correction software.



Focal Length..........Correction Number...... Zoom button presses.

8.9mm ...................... +5..................................0
9.5mm .......................+4......................... .........1
10.2mm.......................+4................... ...............2
11.0mm.......................+3................... ...............3
11.8mm.......................+3................... ...............4
12.7mm.......................+2.5................. ..............5
13.8mm.......................+2................... ...............6
15.0mm.......................+2................... ...............7
16.4mm.......................+1.5................. ..............8
18.0mm.......................+1.5................. ..............9
19.8mm.......................+1.5................. .............10
21.8mm.......................+1.5................. .............11
24.0mm.......................+1.5................. .............12
26.5mm.......................+1.5................. .............13
29.3mm.......................+1.5................. .............14
32.4mm.......................+1................... ..............15
35.9mm.......................+0.5................. .............16
40.0mm.......................+0.5................. .............17
44.5mm.......................+0.5................. .............18


N.B. Photshop Panostitch seemed to perform best with 24.0mm focal length, uncorrected barrel distortion pictures (12 presses of the zoom).

I hope this may be of help.

Laterz

Steve
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