Looking for a Good Macro Lens

[Josh66]

however I don't understand why you wouldn't want to shoot at 2.8 other than maybe the depth of field would be too shallow. Is that correct?

Yes. That is the reason.

Wide open, at 1:1, your DOF would be on the order of 1mm, or less.

 

[Bgagnon127]

Yes. That is the reason.

Wide open, at 1:1, your DOF would be on the order of 1mm, or less.

Thanks, I'm still learning this photography stuff

 

[AUG19]

Cosina 3.5/100. Very cheap. Very good. Available in F mount.

http://www.photozone.de/pentax/368-cosina-af-100mm-f35-macro

 

[AUG19]

The criticism of the build i think a bit exaggerated.

 

[Bgagnon127]

Thats probably why I couldn't get the depth of field I wanted on this shot. I think it's too shallow.

Yes. That is the reason.

Wide open, at 1:1, your DOF would be on the order of 1mm, or less.

Thanks, I'm still learning this photography stuff

 

[Josh66]

Yes. That is the reason.

Wide open, at 1:1, your DOF would be on the order of 1mm, or less.

Thanks, I'm still learning this photography stuff

Just think of all those macro bug shots that I'm sure you've seen.

Take a bug, maybe a half inch long, and the head or maybe the front legs are in focus, but the back legs (like, 1/4" away) are out of focus. And that might be at f/11.

The closer you get, the less DOF you have to work with. You either need a lot of light (to use small apertures), or a tripod (if the subject isn't moving). That's why a lot of people focus stack for macro (ask Overread about that).