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Depth-of-Field
This calculator provides near, far and hyperfocal distance for
any specific lens and film format inputted. It also provides a Depth-of-Field
Table showing the zone of sharpness for the inputted lens at different distances
and f/stops.
Lens Focal Length Conversions
By
Format Table
Ever wonder what lens equivalent you would need if you
were shooting a different format film? With this table, you can easily tell that
a person shooting 6x7 would need a 210mm lens to see the same thing you do with
a 105mm on your 35mm system.
Adjusting Exposure
For Teleconverters And/Or Extension Tubes
If you use either Teleconverters or Extension Tubes and you
have TTL light metering, you normally do not worry about how much light you are
using. But what if you TTL light meter goes on the fritz or you just wondered
how much light you loose? With this calculator you can find out what your
effective aperture is for any combination of lens, teleconverter and/or
extension tubes.
Resolution and File
Size
Want to know what your file size will be as either a RGB or
CMYK image at various print sizes? You can use this calculator to find the file size for
various output resolutions in ppi (dpi).
Focal Length Needed Calculator
You know what size and how far away the subject is, but what
focal length lens do you need to use to fill the frame using your current
format? There are a lot of ways to use this calculator, you can input the
focal length and size of the subject and find out how far away you need to be to
fill the frame. You can also specify if you are using vertical or horizontal
formats for a variety of film formats.
Angle of View Calculator
Would you like to know what the angle of view is for any lens
for a given format? In diagonal, horizontal and vertical angles? This simple
calculator will let you know.
Flash Calculator
Enter the Guide Number of your flash and how far you are from
the subject, this calculator can tell you what aperture to use at various ISO's
and flash powers (of course you can calculate other combinations).
f / Number Arithmetic
Have you ever wondered what f/stop you would need to use if
you lost 3 stops of light? Or what f/stop should you set if someone asks you to
subtract two stops? Use this calculator to find the answers.
Scanning & Printing
Calculators
Want to know how big your file size will be if you scan a
8x10 original at 300 dpi and 24 bit color depth? How about printing a digital
file of a known size, what size in inches will it come out as? There are also
calculators so you can figure out how to scan an image for printing at a
specified size and another for screen display.
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| Depth-of-Field
| Focal Length Conversion Table
|
| Teleconverter & Extension Tube
Exposure |
| Resolution and File Size
|
| Focal Length Needed |
Angle Of View |
| Flash Calculator |
f/Number Arithmetic |
| Scanning & Printing Calculators
|
| Calculator Home |
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This
website is published
by the OREGON
COAST PHOTOGRAPHERS' ASSOCIATION, Inc. All
articles, features, images and other material posted within do not necessarily
reflect the views of OCPA’s
Board of Directors, officers, membership, associated organizations or editors of
this publication.
Any/all brand, product or business names listed are copyrighted, trademarked
and/or registered and are not necessarily endorsed by OCPA.
Reprinting /
reposting of any article or web page, in whole or in part, from this site may be
used in non-commercial photography club newsletters or web sites as long as the
item is not specifically copyrighted and credit is given to the author and this
web site as the source of the information. Any other type of reproduction may be
done with specifically written permission only.
Inquiries
about this publication may be made by directing them to the webmaster, c/o Oregon
Coast Photographers’ Association, Inc.,
P.O.
Box 5646, Charleston, OR 97420 or ocpa@hotmail.com.