Macro Sharpness Test: This test was taken to demonstrate the effects of aperture on DOF and sharpness. The test subject was a Spotted Flower Chafer, chosen due to the fine detail in it's hair and body as well as being relatively "deep" providing a good test for DOF and sharpness. The test was taken with a 20D on a tripod using a remote release (TC-80N), the beetle was still alive (as variations in leg position show) but turned on his back to limit movement. Each frame was shot at 1/320s ISO 400, exposure was adjusted for using a MT-24EX flash ring. Apart from increasing exposure on each frame by +0.67 in raw conversion and removing dust spots, no editing (including noise reduction/sharpening) was done.

This frame shows the entire beetle at f/11

Other Images in series:

• 
  Entire beetle, f/5.6
• 
  Entire beetle, f/22
• 
  Crop of beetle showing detail at 100%, f/5.6
• 
  Crop of beetle showing detail at 100%, f/11
• 
  Crop of beetle showing detail at 100%, f/22

fir0002 flagstaffotos [at] gmail.com Canon 20D + Sigma 150mm f/2.8

Using this image: licensing/copyright information Note: this image is not in the Public Domain. Under the CC BY-NC: you are free to copy, distribute, transmit and adapt this work provided that correct attribution is provided. Attribution must be provided in a prominent location to "Fir0002/Flagstaffotos". Under the GFDL 1.2: please note details below Under the GFDL v1.2 (only option): any reproduction of this image, in any medium, must appear with a copy of, or full (hyperlinked) URL of the GFDL license. In addition, attribution of this image to "Fir0002/Flagstaffotos" is required and you are required to release the image (or any subsequent derivatives of it) under the GFDL v1.2. No other conditions may be added to, or removed from this license without the permission of the author and copyright holder. If you require a less restrictive commercial license please email "flagstaffotos [at] gmail.com" to negotiate terms.

Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 only as published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License.

1.2 onlyhttp://www.gnu.org/licenses/old-licenses/fdl-1.2.htmlGFDL 1.2GNU Free Documentation License 1.2truetrue

This file is published under the following Creative Commons license: Attribution NonCommercial Unported 3.0