Announcement: new DoF calculator available for download

Hello Jens,

I want to thank you for your effort and for sharing it with everyone.
Since you asked I have a one suggestion.
I am more involved in a portrait photography which usualy include:
1. portrait focal range 75 - 85 - 105 - 135
2. large apertures (for putting background out of focus)
3. close distance to subject

This lead to very shallow depth of field and it can be critical and ruin the
picture if not calculated right.
My suggestion is to make a dof calculator similar to the one that you
already made but oriented to portrait photography in scaling: range in
centimeters (cca 70 - 300 cm), and larger apertures from 1.4 to 16. The
scaling of your tool should be more precise and not to include distances
further than 300 centimeters and focal ranges smaller and biger then
mentioned here.
This would be an invaluable tool for quick reference where you are in the
field.

I have seen and use a lot of dof calculators of all kind but none has such
shape that fit this particular work, which on the other hand represent a
huge amount of shooting in photography.
I am writing you because a have recognized your calculator as a very good
and practical idea and I am agree with you that this is a better solution
then Palm devices. I do have Visor and use it for dof calculations for
particular metter but this is just another sensitive, complicated and
battery dependent device that add another few hundred grams to you gear and
need some time do do the calculations.

This is a good idea and it can be even more useful if it will be even more
specialized.

Regards,

Robert



"Jens Regge" wrote in message
...
Hi all together,

some years ago, I've started the project of creating a a
depth-of-field calculator in form of a disc.
But I somewhat forgot about it, too many other things to do.
Now, after some rainy weekends, I finally managed to finish the first
version.

A number of discs are available for different circles of confusion,
each covering the (approximate) focal length range of 28 to 105mm (or
the equivalent for that equipment) as well as f-stops from about 2.8
to 22.

I've made it publicly available under the following URLs. Each PDF is
about 1.2 megs in size. There is a German (metric) version and a US/UK
(imperial) version:
http://www.silverimages.de/downloads/dof-metric.pdf
http://www.silverimages.de/downloads/dof-imperial.pdf

I'd like to know if this is useful for others and of course your
comments for improval.

Please send comments also as PM, since I'm no regular reader of US/UK
photo groups, I usually only read the German spoken de.rec.fotografie.

Best regards,
Jens.
--
@@@
C|~| jens regge
|_| http://www.silverimages.de/
|