Welcome to my blog, I'm Charles Johnson - a scientist and an amateur photographer. This site is devoted to all aspects of science related to photography. For more information read my About page.
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Charles S. Johnson, Jr.
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Tuesday May 18, 2010
A good experience with the Sigma 105mm macro lens
Comments[0] 12:19PM May 18, 2010 by Charles in Lenses
I have been a happy user of Sigma lenses (Canon mount) for several years. I currently have the following Sigma lenses: 105mm macro, 150mm macro, 15mm fisheye, and 10mm fisheye. The 105mm lens is compact and light, and I tend to take it on travels instead of the 150mm lens.[Read More]
Thursday May 13, 2010
More publication news. I have an advanced copy of SCP!
Comments[0] 12:05PM May 13, 2010 by Charles in General
Just this week I received a copy of SCP. It looks good, and I hope it is available soon on Amazon and elsewhere. The pages are 8"x10" with a two column format, and the figures and illustrations are in full color. You can see sample pages on Amazon.com.
I am sure some errors will be found. I plan to make a list and post it here. Please send me your comments and any errors you find.