Diffraction On Smaller Aperture Values Test

Diffraction on smaller aperture values TEST

posted on 14th of august, 2012

This post was continued with some tests: http://www.dreamstime.com/thread_29668

Test finished (at least, a preview).
http://alveraphoto.blogspot.ro/2012/08/diffraction-on-smaller-aperture-values.html

Test subject: a small part of acrylic on canvas covered with varnish (lake protection). For next test I will use a towel (thanks Afagundes).

Test conditions: Nikon D90 body, Nikkor 35mm f/1.8 AF-S DX, f/1.8 - f/22, Giottos MT9361 tripod, exposure delay mode ON (anti-vibration).
Tethered shoot (aperture changes was made from PC so the body was not moved).
Original Jpeg from camera (Standard, ISO 200, Noise reduction OFF, Long exposure noise reduction OFF). Click on images for bigger (but not full!) resolution; I uploaded the max/fine size images but Google blogger resized them to 1600 x 1063 pixels. Please wait for a center and margins crop or give me an idea how to upload on Google blog full res jpeg and RAW files.
Comments are welcome. Thanks to all from this post: http://www.dreamstime.com/forumm_29668_pg5 for helping me.

UPDATE:Another test with a towel and center CROP images uploaded: http://alveraphoto.blogspot.ro/2012/08/diffraction-on-smaller-aperture-values_14.html

Tags: aperture diffraction lens nikon test

Comments (5)

	Posted by Alvera on August 19, 2012 You're welcome.
	Posted by Giannit on August 19, 2012 Thanks for share with us this very interesting test!
	Posted by Egomezta on August 14, 2012 Thanks for sharing...
	Posted by Bradcalkins on August 14, 2012 The center crops seem easier to judge to me. The blogger format keeps fitting the larger sizes to my screen. I left a comment on your blog - but anything from f/4 to f/11 seem plenty sharp to me!
	Posted by Alvera on August 14, 2012 Another test with a towel and center CROP images uploaded: http://alveraphoto.blogspot.ro/2012/08/diffraction-on-smaller-aperture-values_14.html