No idea what AV is but here's something that will help:.
Http://www.google.com/...mp;hl=en&q=Dof+calculator&btnG=Google+Search.
Don't wait for the Nikon D-whatever, have fun now!http://www.flickr.com/photos/j_wijnands/..
This one is pretty nice:.
Http://stegmann.dk/mikkel/barnack/.
Here's an online calculator:.
Http://www.dofmaster.com/dofjs.html.
JimChttp://www.pbase.com/jcockfield..
The table may be better for you. I have printed a few off for my 24-70 f2.8 lens at 24, 48 and 70mm which I keep in my camera bag..
Http://www.dofmaster.com/doftable.html.
There really is no good reason why this information could not be available via a digital readout on a well sorted DSLR..
Chris Elliott.
*Nikon* D Eighty + Fifty - Other equipment in Profile.
Http://PlacidoD.Zenfolio.com/..
Chris Elliott wrote:.
The table may be better for you. I have printed a few off for my24-70 f2.8 lens at 24, 48 and 70mm which I keep in my camera bag..
Http://www.dofmaster.com/doftable.html.
Not a bad idea. I didn't realize the calculations were so complex. For some stupid reason I never thought to factor in distance to subject but the dofmaster online tool paints a neat picture and after tweaking it a bit I started to understand what was going on. I had to throw in some values for when I typically take shots of my dog and convert that to inches but I think I'm getting the hang of it..
There really is no good reason why this information could not beavailable via a digital readout on a well sorted DSLR..
Now that would be great!! I might upgrade or switch brands for that feature. I had one really nice picture at a party where a group of ladies were sitting on the couch and I failed to set the correct AV to get them all in focus (or I could have put myself directly in front of all of them so they sat on the same plane). With something on the camera that would tell me I had only 1.5 feet DOF I could have saved the shot by realizing the distance from the first person to the last was probably more like 5 feet. In the end it's my fault of course but that would be a great tool to have in the camera..
Misc equip : Canon 610, Canon 400D, Canon 10D (about to sell), EF 50mm f/1.8 II, EF 85mm f/1.8 USM, EF 24mm f/2.8 (not so sure about)..
Well, it may seem daunting at first but after 500 or 1000 shots you'll be able to guesstimate this pretty accurately.Don't wait for the Nikon D-whatever, have fun now!http://www.flickr.com/photos/j_wijnands/..
The other thing to say is that you have depth of field preview on your 400D. It may be difficult to see with a small VF but you should be able to see what is in focus using that in good light..
In low available light or for any sort of action or event photography it is usually a non starter but having an idea of DOF is usually all you need.Chris Elliott.
*Nikon* D Eighty + Fifty - Other equipment in Profile.
Http://PlacidoD.Zenfolio.com/..