Author: David Mathre

I am a scientist by training (Eckerd College, BSc; Caltech, Ph.D.). I worked for 27 years as a Chemist in the Pharmaceutical Industry developing processes to manufacture medicines for human and animal health. I now spend my time as a photographer and world traveler. My interests include the natural world, wildlife, landscapes, sky, and seascapes, travel, and astrophotography. I look for unique ways of viewing the world and presenting my images. I have traveled to over 55 countries in six continents, often on Semester at Sea voyages. While at home in New Jersey, I spend time on home renovation and expansion of a wildflower garden/meadow.

Saturday (19-January-2008) — New Jersey

Winter Nature in New Jersey.

Great Blue Heron and a pair of Mallard Ducks in the pond at the nearby Sourland Mountain Preserve. I guess they decided to spend the winter here rather than in Florida.  Some years this pond freezes over.

Great Blue Heron and Mallards. Sourland Mountain Preserve. Image taken with a Nikon D300 and 80-400 mm VR lens (ISO 800, 400 mm, f/8, 1/250 sec) (David J Mathre)
Great Blue Heron and Mallards. Sourland Mountain Preserve. Image taken with a Nikon D300 and 80-400 mm VR lens (ISO 800, 400 mm, f/8, 1/250 sec)

Sunday (06-January-2008) — Colorado

Winter in Rocky Mountain National Park.

The main road on the east side of the park was open so I spent the day. It was cold and windy, and a new storm appeared to be building. It has been interesting to watch the seasons in the National Park.

Winter in Rocky Mountain NP. Image taken with a Nikon D2xs and 17-35 mm f/2.8 lens (ISO 100, 17 mm, f/11, 1/125 sec) (David J. Mathre)
Winter in Rocky Mountain NP. Image taken with a Nikon D2xs and 17-35 mm f/2.8 lens (ISO 100, 17 mm, f/11, 1/125 sec) .Winter in Rocky Mountain NP. Image taken with a Nikon D2xs and 17-35 mm f/2.8 lens (ISO 100, 25 mm, f/9, 1/125 sec)
Winter in Rocky Mountain NP. Image taken with a Nikon D2xs and 17-35 mm f/2.8 lens (ISO 100, 25 mm, f/9, 1/125 sec) (David J. Mathre)
Winter in Rocky Mountain NP. Image taken with a Nikon D2xs and 17-35 mm f/2.8 lens (ISO 100, 25 mm, f/9, 1/125 sec)
Winter in Rocky Mountain NP. Image taken with a Nikon D2xs and 17-35 mm f/2.8 lens (ISO 100, 17 mm, f/11, 1/125 sec) (David J. Mathre)
Winter in Rocky Mountain NP. Image taken with a Nikon D2xs and 17-35 mm f/2.8 lens (ISO 100, 17 mm, f/11, 1/125 sec)

Sunday (30-December-2007) — New Jersey

Currency & Stamps: Micro-print.

One method I use to test the resolution of cameras and lenses is to see well the combinations perform. The US $50 bill has “The United States of America” printed using very small letters. A copy machine would have difficulty resolving something this small.

Camera & Lens Testing. United States of America micro-print on a US $50 bill. Image taken with a Nikon D300 camera and 200 mm f/2 lens with a TC-E II 2x teleconverter (ISO 200, 400 m, f/4, 1/250 sec). (David J Mathre)
Camera & Lens Testing. United States of America micro-print on a US $50 bill. Image taken with a Nikon D300 camera and 200 mm f/2 lens with a TC-E II 2x teleconverter (ISO 200, 400 m, f/4, 1/250 sec). (David J Mathre)
Camera & Lens Testing. United States of America micro-print on a US $50 bill. Image taken with a Nikon D300 camera and 200 mm f/2 lens with a TC-E II 2x teleconverter (ISO 200, 400 m, f/4, 1/250 sec). (David J Mathre)
Camera & Lens Testing. United States of America micro-print on a US $50 bill. Image taken with a Nikon D300 camera and 200 mm f/2 lens with a TC-E II 2x teleconverter (ISO 200, 400 m, f/4, 1/250 sec). (David J Mathre)

Friday (28-December-2007) — Florida

Gone to see Florida 2007 Road Trip Day 7: Dawn over Tampa Bay.

I stayed at the Historic Vinoy Hotel in St. Petersburg. This was my last day in Florida, and I took a series of images of the dawn colors over Tampa Bay from my balcony. The Vinoy Hotel is a great place to stay and I want to return.

Colors at Dawn over Tampa Bay from a Vinoy Hotel Balcony in St. Petersburg, Florida. Image taken with a Nikon D300 camera and 14-24 mm f/2.8 lens.. (David J Mathre)
Colors at Dawn over Tampa Bay from a Vinoy Hotel Balcony in St. Petersburg, Florida. Image taken with a Nikon D300 camera and 14-24 mm f/2.8 lens. (David J Mathre)


Thursday (27-December-2007) — Florida

Gone to See America. December 2007 Florida Road Trip. Day 6: Birds at Fort De Soto Park.

It is always fun going to Fort De Soto Park. It is located on the southern end of Pinellas county separating Tampa Bay and the Gulf of Mexico. The park is known for its beaches and is a great location to take bird pictures. The three images for this day include a Great Blue Heron, a White Egret having a cricket for breakfast, and an Osprey building a nest under a full moon.

Great Blue Heron. Image taken with an Nikon D2xs and 80-400 mm VR lens (ISO 400, 120 mm, f/8, 1/1000 sec). (David J Mathre)
Great Blue Heron. Image taken with an Nikon D2xs and 80-400 mm VR lens (ISO 400, 120 mm, f/8, 1/1000 sec).
White Egret having a Cricket for Breakfast. Image taken with an Nikon D300 and 200 mm f/2 VR lens with TC-20 II (ISO 200, 400 mm, f/11, 1/400 sec). (David J Mathre)
White Egret having a Cricket for Breakfast. Image taken with an Nikon D300 and 200 mm f/2 VR lens with TC-20 II (ISO 200, 400 mm, f/11, 1/400 sec).
Osprey Landing on Nest under a Nearly Full Moon. Image taken with an Nikon D300 and 200 mm f/2 VR lens with TC-17 II (ISO 200, 340 mm, f/11, 1/340 sec). (David J Mathre)
Osprey Landing on Nest under a Nearly Full Moon. Image taken with an Nikon D300 and 200 mm f/2 VR lens with TC-17 II (ISO 200, 340 mm, f/11, 1/340 sec). (David J Mathre)

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