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Forums Lobby GET TO KNOW YOUR CAMERA & MASTER IT Nikon D90/D80/D70 (Public) topic #251423
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Subject: "RE: D80 landscapes" Previous topic | Next topic
elec164 Silver Member Nikonian since 15th Jan 2009Fri 22-Jun-12 12:25 PM
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#13. "RE: D80 landscapes"
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Diffraction is a property of a waveform as it encounters an obstacle/barrier. So yes it’s due to the aperture and the amount of enlargement of the capture. So the sensor size itself is not responsible, but the amount of enlargement to achieve a specific print size and the viewing distance of the print. It’s similar to DOF in that regard. Again assuming an 8x10 print viewed at 18 inches, a DX sensor needs a 13 times enlargement to achieve that size and would show diffraction after about f/11. An FX sensor needs about 8 times enlargement and would show diffraction after about f/16. But again that assumes a specific enlargement at a specific viewing distance. If you crop then enlarge or view the print closer than what’s considered a normal distance, you will need a larger aperture to avoid diffraction affects.

Also the softness due to diffraction can be mitigated to an extent by a sharpening process known as de-convolution. But while de-convolution can improve the appearance of relative sharpness, it cannot recover fine detail that was lost to diffraction.

Rather than give a lengthy explanation you can check out these two articles. One at Luminous-landscape and the other at Cambridge-in-Colour .

Pete

Pete

Visit my Nikonians gallery.

  

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A general, generic topicD80 landscapes [View all] , shearer , Wed 20-Jun-12 08:17 PM
 
Subject Author Message Date ID
Reply message RE: D80 landscapes
espeto68 Gold Member
20th Jun 2012
1
Reply message RE: D80 landscapes
shearer
21st Jun 2012
5
Reply message RE: D80 landscapes
johnnosacka
21st Jun 2012
2
Reply message RE: D80 landscapes
johnnosacka
21st Jun 2012
3
     Reply message RE: D80 landscapes
shearer
21st Jun 2012
6
Reply message RE: D80 landscapes
JosephK Silver Member
21st Jun 2012
4
Reply message RE: D80 landscapes
shearer
21st Jun 2012
7
     Reply message RE: D80 landscapes
MEMcD Moderator
21st Jun 2012
8
     Reply message RE: D80 landscapes
shearer
21st Jun 2012
10
          Reply message RE: D80 landscapes
elec164 Silver Member
22nd Jun 2012
11
          Reply message RE: D80 landscapes
shearer
22nd Jun 2012
12
               Reply message RE: D80 landscapes
elec164 Silver Member
22nd Jun 2012
13
          Reply message RE: D80 landscapes
espeto68 Gold Member
22nd Jun 2012
16
     Reply message RE: D80 landscapes
elec164 Silver Member
21st Jun 2012
9
Reply message RE: D80 landscapes
WD4MLA Silver Member
22nd Jun 2012
14
Reply message RE: D80 landscapes
shearer
22nd Jun 2012
15
     Reply message RE: D80 landscapes
WD4MLA Silver Member
23rd Jun 2012
18
Reply message RE: D80 landscapes
benthans
23rd Jun 2012
17

Forums Lobby GET TO KNOW YOUR CAMERA & MASTER IT Nikon D90/D80/D70 (Public) topic #251423 Previous topic | Next topic


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