50mm 1.4 (Page 3): Great! I'd better get working on these. Actually, I think the best I could do is make up a chart of some kind for my own cameras. The online program looks pretty...

jerryc41 Loc: Catskill Mts of NY

jerryc41 wrote:

oldogfoto wrote:

i'll take two!

Great! I'd better get working on these.

Actually, I think the best I could do is make up a chart of some kind for my own cameras. The online program looks pretty complex - so many cameras, etc.

I'll have to look for that app.

Someone beat me to it, and they're free!

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

nikonshooter Loc: Spartanburg, South Carolina

jerryc41 wrote:

oldogfoto wrote:

i'll take two!

Great! I'd better get working on these.

Actually, I think the best I could do is make up a chart of some kind for my own cameras. The online program looks pretty complex - so many cameras, etc.

I'll have to look for that app.

Someone beat me to it, and they're free!

If you have an Iphone or Ipad, they have APPs.

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

jerryc41 Loc: Catskill Mts of NY

nikonshooter wrote:

jerryc41 wrote:

oldogfoto wrote:

i'll take two!

Great! I'd better get working on these.

Actually, I think the best I could do is make up a chart of some kind for my own cameras. The online program looks pretty complex - so many cameras, etc.

I'll have to look for that app.

Someone beat me to it, and they're free!

If you have an Iphone or Ipad, they the APPs.

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

Thanks. I'm heading there now.

Julian Loc: Sarasota, FL

jerryc41 wrote:

quote=jerryc41 quote=nikonshooter quote=Dria He... (show quote)

Nonsense! The DOF of a 100mm lens designed for a full frame (FX) camera is the same when that lens is used with a DX camera given the same shooting aperture. A lens designed for an FX format covers a circular image whose diameter is equal to the diagonal of the that format, or approximately 43.26mm. A lens designed for a DX format also covers a circular image whose diameter is equal to the diagonal of the DX sensor, or approx. 28.84mm.
In general, the published DOF calculators take these factors in consideration and assume (wrong word) that the focal length you entered is the designed focal length for the camera format in question. Ultimately, a lens designed for DX format will not cover the FX format. As shown in the above calculations, the diameter of the cone of projection of a true DX lens is much narrower than that of an FX lens of the same focal length, resulting in a shallower depth of field.

rayford2 Loc: New Bethlehem, PA

Dria wrote:

Here is that Handy Depth of field calculator that "HEY JOE" refrenced

Thank you, Dria

Soonerfan Loc: Oklahoma

Thanks for the info on the 50mm 1.4. Couldn't figure out why sometimes the second person in my photo was blurry. I've learned a lot of good things in a short amount of time!