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what can I expect from
Jun 19, 2013 15:53:47   #
Harvey Loc: Pioneer, CA
 
I have tried the 50mm reversed and got the 1:1 but very shallow DOF
can I expect and get better DOF with this quality nifty fifty canon glass and tubes?

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Jun 19, 2013 19:07:45   #
Nikonian72 Loc: Chico CA
 
Depth of Field is directly related to aperture, even reversed. With either a BR-4 ring or a BR-6 ring, I can control the aperture on a reversed Nikkor lens, so I can focus & compose wide-open, then close-down (via cable-release) for image capture.

Auto-extension tubes will allow you to focus & compose wide-open, then automatically close-down for image capture.

Nikon BR-4 & BR-6 rings
Nikon BR-4 & BR-6 rings...

Nikon BR-6 ring + standard cable release
Nikon BR-6 ring + standard cable release...

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Jun 19, 2013 19:11:30   #
Harvey Loc: Pioneer, CA
 
Nikonian72 wrote:
Depth of Field is directly related to aperture, even reversed.
I understand the DOF with normal lens use - I am just wondering if I can expect the same with long exposures at f14 and up with the tubes.

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Jun 19, 2013 21:38:20   #
martinfisherphoto Loc: Lake Placid Florida
 
Harvey wrote:
I understand the DOF with normal lens use - I am just wondering if I can expect the same with long exposures at f14 and up with the tubes.
Here's the fall back with Macro.. The closer you get/working distance/ the shallower the DOF. One reason its important to pay special attention to focal plane. If the subject is flat to the lens, then the DOF seems greater as more of subject is in focus. Take a look at some of the better shooters here and you will see many of the subjects are nice and square with the lens. But you cannot always square subject to lens. This is the reason I took up focus-stacking, as my higher magnification shots were just too shallow depth of field.

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Jun 19, 2013 21:46:39   #
Harvey Loc: Pioneer, CA
 
fstop22 wrote:
Here's the fall back with Macro.. The closer you get/working distance/ the shallower the DOF. One reason its important to pay special attention to focal plane. If the subject is flat to the lens, then the DOF seems greater as more of subject is in focus. Take a look at some of the better shooters here and you will see many of the subjects are nice and square with the lens. But you cannot always square subject to lens. This is the reason I took up focus-stacking, as my higher magnification shots were just too shallow depth of field.
Here's the fall back with Macro.. The closer you g... (show quote)


This "focus stacking" must be a lot like HDR -

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Jun 19, 2013 22:10:18   #
Nikonian72 Loc: Chico CA
 
Harvey wrote:
This "focus stacking" must be a lot like HDR.
FAQ: What is Focus-Stacking, and What Programs are Required?
http://www.uglyhedgehog.com/t-50561-1.html

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