Testing an extension tube, Meet my Aunt.

LightSpeed · Dec 31, 2011

Talk about hard stuff.
0 Depth of field.
Diffraction
You name it. It happens with this stuff.

SCraig · Dec 31, 2011

Ever heard of focus stacking? You might enjoy it.

Edsport · Dec 31, 2011

If you have a canon lens you can set the aperture then hold in the preview button and while keeping it in remove the lens. Screw on your extension tube and now you have some depth of field. Some say you can hurt your lens but i've had no problems doing it. Do it at your own risk...

bazooka · Dec 31, 2011

Edsport said:
If you have a canon lens you can set the aperture then hold in the preview button and while keeping it in remove the lens. Screw on your extension tube and now you have some depth of field. Some say you can hurt your lens but i've had no problems doing it. Do it at your own risk...

Huh?? What does the DoF preview have to do with anything? Having the tube one doesn't prevent the aperture from closing down....

Edsport · Dec 31, 2011

If you use an extension tube that don't have electrical contacts you will have 0 depth of field as the OP stated (0 aperture) so to get some depth of field he can use the above method...

Mo. · Dec 31, 2011

Sorry, your aunt?

flameshots · Dec 31, 2011

Mo. said:
Sorry, your aunt?

Feeble attempt at humor.

LightSpeed · Dec 31, 2011

Nah the extension tube that I have , has electrical contacts. It's an AF extension tube. I was just playing around with it.
I just got it and I do like it.
It only a 25mm tube but it adds a lot when a 100mm macro is sitting on it. Depth of field goes from " some depth of field" to almost none.
Focus stacking may be the way to go.

SCraig · Dec 31, 2011

LightSpeed said:
... It only a 25mm tube but it adds a lot when a 100mm macro is sitting on it. Depth of field goes from " some depth of field" to almost none.
Focus stacking may be the way to go.

That's the nature of macro. Nothing is free and since you are "Getting" magnification you are "Paying" with depth of field.

This Web Site is owned by a member of a Nikon forum I frequent. He does a lot of macro work and a lot of focus stacking, and some of his photographs are amazingly full of depth. There are a number of PDF tutorials on it that you might find useful.