David Mathre Photography

Welcome to my Images of the Day Photo blog. My goal is to post images from each day of the year going back to 2006 when I got my first DSLR camera. Images I post on Google+ are also forwarded to this Photo blog. I am a retired chemist that worked nearly thirty years in the Pharmaceutical industry. I took my first DSLR camera on a road trip across the United States, and became hooked, with my new passion becoming a photographer. I now spend all my time traveling and taking pictures. Since then I have visited over 50 countries, many on Semester at Sea voyages. My photographic interests include travel, the natural world, landscapes, and photographic techniques. I always want to learn something new and the only way to become better is to learn from mistakes.

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Nine-Years Ago (08-March-2008) — Colorado

I must have been bored, so did some autofocus testing with some of my lenses. The goal was to see which lens was able to focus on Alexander Hamilton, and provide a sharp enough image to make out the microprint security feature on his shoulder. All of the images were taken with a Nikon D300 camera. The lenses used include a 105 mm f/2.8 VR macro, 200 mm f/2 VR, 300 mm f/2.8 VR, 400 mm f/2.8, and 200-400 mm f/4 VR.

Alexander Hamilton. Autofocus test. Can you find the microprint? Image taken with a Nikon D300 camera and 200-400 mm f/4 VR lens (ISO 200, 400 mm, f/4, 1/250 sec). (David J Mathre)

Alexander Hamilton. Autofocus test. Can you find the microprint? Image taken with a Nikon D300 camera and 200-400 mm f/4 VR lens (ISO 200, 400 mm, f/4, 1/250 sec). (David J Mathre)

Alexander Hamilton. Autofocus test. Can you find the microprint? Image taken with a Nikon D300 camera and 200 mm f/2 VR lens (ISO 200, 200 mm, f/4, 1/40 sec). (David J Mathre)

Alexander Hamilton. Autofocus test. Can you find the microprint? Image taken with a Nikon D300 camera and 200 mm f/2 VR lens (ISO 200, 200 mm, f/4, 1/40 sec). (David J Mathre)

Alexander Hamilton. Autofocus test. Can you find the microprint? Image taken with a Nikon D300 camera and 300 mm f/2.8 VR lens (ISO 200, 300 mm, f/2.8, 1/250 sec). (David J Mathre)

Alexander Hamilton. Autofocus test. Can you find the microprint? Image taken with a Nikon D300 camera and 300 mm f/2.8 VR lens (ISO 200, 300 mm, f/2.8, 1/250 sec). (David J Mathre)

Alexander Hamilton. Autofocus test. Can you find the microprint? Image taken with a Nikon D300 camera and 400 mm f/2.8 lens (ISO 200, 400 mm, f/2.8, 1/250 sec). (David J Mathre)

Alexander Hamilton. Autofocus test. Can you find the microprint? Image taken with a Nikon D300 camera and 400 mm f/2.8 lens (ISO 200, 400 mm, f/2.8, 1/250 sec). (David J Mathre)

Alexander Hamilton. Autofocus test. Can you find the microprint? Image taken with a Nikon D300 camera and 105 mm f/2.8 VR macro lens (ISO 200, 105 mm, f/4, 1/250 sec). (David J Mathre)

Alexander Hamilton. Autofocus test. Can you find the microprint? Image taken with a Nikon D300 camera and 105 mm f/2.8 VR macro lens (ISO 200, 105 mm, f/4, 1/250 sec). (David J Mathre)

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