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Post new topic   Reply to topic    www.photomacrography.net Forum Index -> Technical and Studio Photography -- Macro and Close-up
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Saul



Joined: 31 Jan 2011
Posts: 1060
Location: Naperville, IL USA

PostPosted: Fri Feb 23, 2018 3:55 pm    Post subject: Encounter Reply with quote

One day, zillion years ago (when I did not have any idea that this great macro community exists), wife came back from the shopping and said, that ... there is VERY big ... VERY frightful ... animal on the car's front grill !!!
Yes, it was big .... and VERY dry poor guy. At that time I did not have any macro equipment, so Epson CX9400 scanner was very useful tool ...




Bigger:
https://c1.staticflickr.com/5/4656/40445938491_d5688a8277_o.jpg
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Saul
Studio, horizontal and field setups
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Olympusman



Joined: 15 Jan 2012
Posts: 3572

PostPosted: Sat Feb 24, 2018 10:56 am    Post subject: Scanner Reply with quote

I'm really surprised that you had so little depth of field. I found a surprising amount of depth of field when I photograph macro specimens. My recent post of a Horseshoe Crab was shot on a Visioneer scanner.

Mike
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Michael Reese Much FRMS EMS Bethlehem, Pennsylvania, USA
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Lou Jost



Joined: 04 Sep 2015
Posts: 2089
Location: Ecuador

PostPosted: Sat Feb 24, 2018 11:18 am    Post subject: Reply with quote

Mike, extreme depth of field with scanners has been my experience also, when scanning orchid flowers.
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Lou Jost
www.ecomingafoundation.wordpress.com
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Saul



Joined: 31 Jan 2011
Posts: 1060
Location: Naperville, IL USA

PostPosted: Sat Feb 24, 2018 11:21 am    Post subject: Re: Scanner Reply with quote

Olympusman wrote:
I'm really surprised that you had so little depth of field. I found a surprising amount of depth of field when I photograph macro specimens. My recent post of a Horseshoe Crab was shot on a Visioneer scanner.


Hi Mike, I was really surprised that you had so much depth of field with a Horseshoe Crab, initially I thought that there is some trick Smile
Very nice post, BTW. Do later Visioner models have same big depth of field ?
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Saul
Studio, horizontal and field setups
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rjlittlefield
Site Admin


Joined: 01 Aug 2006
Posts: 18694
Location: Richland, Washington State, USA

PostPosted: Sat Feb 24, 2018 11:29 am    Post subject: Reply with quote

I addressed the DOF issue at http://www.photomacrography.net/forum/viewtopic.php?p=225809#225809 and a followup reply in the same thread.

Quick summary is that a scanner should have the same DOF/diffraction tradeoff as any other system. If you're seeing greater DOF from a scanner than from a macro system shooting the same size subject, then it's because the macro system is running at a wider effective aperture. I think there's no magic, just a matter of corresponding settings that apparently are not intuitive.

If you have any evidence to the contrary, please share.

--Rik
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