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jcolwell.ca © 2009 J.L.
Colwell |
Photography and other stuff.
Calculators
LensTScalc Lens Tilt-Shift (T-S)
calculator (new)
Equivalent focal length
based on Angle of View (AoV) and vice versa (update)
Exposure Value (EV)
calculator and guidance (update)
LF bellows extension
for Large Format (LF) cameras
Information
Film characteristics of many types of film
Keos adapter to mount your Pentax K-mount lens on a
Canon EOS body
Lens speed zones plot how “fast” your lenses
are
LF lens matrix plot effective AoV as your back
varies from 6x7 to 4x5 (or 6x17)
LF masks .doc file of 6x7 through 8x10 nominal image
sizes
Used
lens check list .doc or .pdf
Vignetting
figures .doc or .pdf
FWIW
Some
thoughts on using a camera in winter
Future of dSLR (In a weak moment, I
posted this to the photo.net EOS forum)
What I said when Peter-vT asked me what Canon stuff he should buy
Rabbit and Owl count
megapixels (from Monaghan’s Megasite,
well worth a read)
Thanks for looking, jim@jcolwell.ca
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Copyright notice:
all images on this site are Copyright © J.L. Colwell. You may not copy, reproduce or distribute any
images from this site without prior written permission of J.L. Colwell. |