Good DOF Chart or Calculator

[dsze]

....I've had several, but none that I really like or find convenient to use. Anyone have a favorite DOF chart or program to recommend?

-daniel

[Scottes]

http://www.johnhendry.com/gadget/dof.php
http://www.dofmaster.com/dofjs.html

[Jemmind]

http://www.dofmaster.com/dofjs.html

Just checked out this site...now what the heck is a circle of confusion???
Julie

[Scottes]

From their FAQ, http://www.dofmaster.com/faq.html

What is the meaning of circle of confusion?

Circle of confusion is difficult to explain in non-technical terms. You shouldn't worry about it if you're just beginning to learn about depth of field. My, that's helpful, huh? NOT!

So a quick Google found http://tangentsoft.net/fcalc/help/CoC.htm:

About the Circle of Confusion

Imagine a perfect white point in an empty black room. The point has no height, and no width. If you focus an optically perfect lens on that point, it forms a perfect point on the film as well. If, however, you focus slightly in front of or behind the point, the point will image on the film as a small blurry circle. If that circle is small enough, it will still look like a point when enlarged for printing. The "circle of confusion" is typically calculated as the largest on-film circle that you see as a point when you make an 8 × 12 print and view it from a "normal" viewing distance, typically 2-3 feet. Anything larger is seen as a small circle, and is therefore perceived as out of focus. That's a little better.

f/Calc is a nice little DoF calculator that you can install on your Windows box or Mac or Palm and it's free. http://tangentsoft.net/fcalc/

[Jemmind]

So a quick Google found http://tangentsoft.net/fcalc/help/CoC.htm:


About the Circle of Confusion

Imagine a perfect white point in an empty black room. The point has no height, and no width. If you focus an optically perfect lens on that point, it forms a perfect point on the film as well. If, however, you focus slightly in front of or behind the point, the point will image on the film as a small blurry circle. If that circle is small enough, it will still look like a point when enlarged for printing. The "circle of confusion" is typically calculated as the largest on-film circle that you see as a point when you make an 8 × 12 print and view it from a "normal" viewing distance, typically 2-3 feet. Anything larger is seen as a small circle, and is therefore perceived as out of focus.
That's a little better.



Little being the key word;)
Now maybe if I read it slowly about ten times I will get it.
At least they named it appropriately. :)
Julie

[GaryTorello]

DOF Calculator:

http://www.eyemagephoto.com/dof_tool.php (http://www.eyemagephoto.com/dof_tool.php)

WAP DOF Calculator (from your cell phone):

http://wap.eyemagephoto.com (http://wap.eyemagephoto.com/)


___________________________
Gary


you always shoot the ones you love

[Bodryn]

I found an interesting DOF program that I downloaded from the freeware palm site a few months ago. I haven't really tested its accuracy but trying it out, it looks like a very meticulously written DOF program available in your shirt pocket that you can run on your Palm device including the old Palm IIIx. If interested, go to:
http://www.freewarepalm.com/