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Forum: Studio Lighting, Flash & Other Mar 12, 2007, 1:49 PM
Replies: 9
Views: 685
Posted By mirkoc
I've read that with ext tubes one can not focus...

I've read that with ext tubes one can not focus at infinity but only up to 10m (the number is just for for an example). I wondered if other parameters would also change.
Anyway, thanks again for the...
Forum: Studio Lighting, Flash & Other Mar 11, 2007, 3:43 PM
Replies: 9
Views: 685
Posted By mirkoc
Thank You for Your responses. I have read...

Thank You for Your responses.

I have read some about DOF theory, but I'm still curious about this idea in the real world. As stated above, I don't have a tube to test it, so I wondered if someone...
Forum: Studio Lighting, Flash & Other Mar 6, 2007, 9:28 AM
Replies: 9
Views: 685
Posted By mirkoc
I posted the question here because I guessed that...

I posted the question here because I guessed that at this forum people have experience with portrait work.

mirkoc
Forum: Studio Lighting, Flash & Other Mar 6, 2007, 9:14 AM
Replies: 9
Views: 685
Posted By mirkoc
I have read that DOF significantly narrows when...

I have read that DOF significantly narrows when ext. tube is used for macro work in order to focus at closer distance.

My idea is to use it for portraits to get advantage of greater lens sharpnes...
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