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.

Tuesday (08-April-2008) — Arizona

Gone to See America 2008. Page Arizona Photography Workshop with Winston Hall. Day 1: Lower Antelope Canyon.

On the first day of the Page Arizona Workshop with Winston Hall we started with a session in Lower Antelope Canyon. The upper and lower portions of Antelope Canyon are narrow slot canyons on the Navajo reservation near Page Arizona. The canyons are favorites for photographers because of the constantly changing light and textures. The canyons can be a challenge to photograph because of the wide range of light levels well beyond the capabilities of digital camera sensors. Several of the following images are HDR composites of 5 images (over and under exposed) processed using Photomatix Pro.

Entrance to Lower Antelope Canyon, Page Arizona. Image taken with a Nikon D300 and 18-200 mm VR lens (ISO 200, 18 mm, f/11, 1/500 sec). (David J Mathre) — Entrance to Lower Antelope Canyon, Page Arizona. Image taken with a Nikon D300 and 18-200 mm VR lens (ISO 200, 18 mm, f/11, 1/500 sec).

Lower Antelope Canyon, Page Arizona. Image taken with a Nikon D3 and 24 mm f/3.5 PC-E lens (ISO 200, 24 mm, f/16, 2.5 to 15 sec). HDR composite of 5 images using Photomatix Pro. (David J Mathre) — Lower Antelope Canyon, Page Arizona. Image taken with a Nikon D3 and 24 mm f/3.5 PC-E lens (ISO 200, 24 mm, f/16, 2.5 to 15 sec). HDR composite of 5 images using Photomatix Pro.

Lower Antelope Canyon, Page Arizona. Image taken with a Nikon D3 and 24 mm f/3.5 PC-E lens (ISO 200, 24 mm, f/16, 1.6-8 sec). HDR composite of 5 images using Photomatix Pro. (David J Mathre) — Lower Antelope Canyon, Page Arizona. Image taken with a Nikon D3 and 24 mm f/3.5 PC-E lens (ISO 200, 24 mm, f/16, 1.6-8 sec). HDR composite of 5 images using Photomatix Pro.

Lower Antelope Canyon, Page Arizona. Image taken with a Nikon D3 and 24 mm f/3.5 PC-E lens (ISO 200, 24 mm, f/16, 1.3 sec). (David J Mathre) — Lower Antelope Canyon, Page Arizona. Image taken with a Nikon D3 and 24 mm f/3.5 PC-E lens (ISO 200, 24 mm, f/16, 1.3 sec).

Lower Antelope Canyon, Page Arizona. Image taken with a Nikon D3 and 24 mm f/3.5 PC-E lens (ISO 200, 24 mm, f/11, 0.4-2.5 sec). HDR composite of 5 images using Photomatix Pro. (David J Mathre) — Lower Antelope Canyon, Page Arizona. Image taken with a Nikon D3 and 24 mm f/3.5 PC-E lens (ISO 200, 24 mm, f/11, 0.4-2.5 sec). HDR composite of 5 images using Photomatix Pro.

Lower Antelope Canyon, Page Arizona. Image taken with a Nikon D3 and 24 mm f/3.5 PC-E lens (ISO 200, 24 mm, f/16, 2-13 sec). HDR composite of 5 images using Photomatix Pro. (David J Mathre) — Lower Antelope Canyon, Page Arizona. Image taken with a Nikon D3 and 24 mm f/3.5 PC-E lens (ISO 200, 24 mm, f/16, 2-13 sec). HDR composite of 5 images using Photomatix Pro.

Lower Antelope Canyon, Page Arizona. Image taken with a Nikon D3 and 24 mm f/3.5 PC-E lens (ISO 200, 24 mm, f/16, 0.5-3 sec). HDR composite of 5 images using Photomatix Pro. (David J Mathre) — Lower Antelope Canyon, Page Arizona. Image taken with a Nikon D3 and 24 mm f/3.5 PC-E lens (ISO 200, 24 mm, f/16, 0.5-3 sec). HDR composite of 5 images using Photomatix Pro.

Lower Antelope Canyon, Page Arizona. Image taken with a Nikon D3 and 24 mm f/3.5 PC-E lens (ISO 200, 24 mm, f/22, 2-6 sec). HDR composite of 5 images using Photomatix Pro. (David J Mathre) — Lower Antelope Canyon, Page Arizona. Image taken with a Nikon D3 and 24 mm f/3.5 PC-E lens (ISO 200, 24 mm, f/22, 2-6 sec). HDR composite of 5 images using Photomatix Pro.

Lower Antelope Canyon, Page Arizona. Image taken with a Nikon D3 and 24 mm f/3.5 PC-E lens (ISO 200, 24 mm, f/16, 0.8-5 sec). HDR composite of 5 images using Photomatix Pro. (David J Mathre) — Lower Antelope Canyon, Page Arizona. Image taken with a Nikon D3 and 24 mm f/3.5 PC-E lens (ISO 200, 24 mm, f/16, 0.8-5 sec). HDR composite of 5 images using Photomatix Pro.

Lower Antelope Canyon, Page Arizona. Image taken with a Nikon D3 and 24 mm f/3.5 PC-E lens (ISO 200, 24 mm, f/16, 0.33-2 sec). HDR composite of 5 images using Photomatix Pro. (David J Mathre) — Lower Antelope Canyon, Page Arizona. Image taken with a Nikon D3 and 24 mm f/3.5 PC-E lens (ISO 200, 24 mm, f/16, 0.33-2 sec). HDR composite of 5 images using Photomatix Pro.

Lower Antelope Canyon, Page Arizona. Image taken with a Nikon D3 and 24 mm f/3.5 PC-E lens (ISO 200, 24 mm, f/16, 0.5 sec). (David J Mathre) — Lower Antelope Canyon, Page Arizona. Image taken with a Nikon D3 and 24 mm f/3.5 PC-E lens (ISO 200, 24 mm, f/16, 0.5 sec).

Lower Antelope Canyon, Page Arizona. Image taken with a Nikon D3 and 24 mm f/3.5 PC-E lens (ISO 200, 24 mm, f/16, 0.6-4 sec). HDR composite of 5 images using Photomatix Pro. (David J Mathre) — Lower Antelope Canyon, Page Arizona. Image taken with a Nikon D3 and 24 mm f/3.5 PC-E lens (ISO 200, 24 mm, f/16, 0.6-4 sec). HDR composite of 5 images using Photomatix Pro.

Lower Antelope Canyon, Page Arizona. Image taken with a Nikon D3 and 24 mm f/3.5 PC-E lens (ISO 200, 24 mm, f/16, 0.25-1.6 sec). HDR composite of 5 images using Photomatix Pro. (David J Mathre) — Lower Antelope Canyon, Page Arizona. Image taken with a Nikon D3 and 24 mm f/3.5 PC-E lens (ISO 200, 24 mm, f/16, 0.25-1.6 sec). HDR composite of 5 images using Photomatix Pro.

Lower Antelope Canyon, Page Arizona. Image taken with a Nikon D3 and 24 mm f/3.5 PC-E lens (ISO 200, 24 mm, f/16, 0.6 sec). HDR composite of 5 images using Photomatix Pro. 4 (David J Mathre) — Lower Antelope Canyon, Page Arizona. Image taken with a Nikon D3 and 24 mm f/3.5 PC-E lens (ISO 200, 24 mm, f/16, 0.6 sec). HDR composite of 5 images using Photomatix Pro. 4

Lower Antelope Canyon, Page Arizona. Image taken with a Nikon D3 and 24 mm f/3.5 PC-E lens (ISO 200, 24 mm, f/22, 0.4-2.5 sec). HDR composite of 5 images using Photomatix Pro (detail enhanser) (David J Mathre) — Lower Antelope Canyon, Page Arizona. Image taken with a Nikon D3 and 24 mm f/3.5 PC-E lens (ISO 200, 24 mm, f/22, 0.4-2.5 sec). HDR composite of 5 images using Photomatix Pro (detail enhanser)

Lower Antelope Canyon, Page Arizona. Image taken with a Nikon D3 and 24 mm f/3.5 PC-E lens (ISO 200, 24 mm, f/16, 1-15 sec). HDR composite of 7 images using Photomatix Pro. (David J Mathre) — Lower Antelope Canyon, Page Arizona. Image taken with a Nikon D3 and 24 mm f/3.5 PC-E lens (ISO 200, 24 mm, f/16, 1-15 sec). HDR composite of 7 images using Photomatix Pro.

Saturday (05-April-2008) — Louisiana

Gone to See America 2008. Springtime in New Orleans.

Some images taken while walking along the Mississippi Riverwalk near the convention center during some time off from the American Chemical Society spring national meeting. The images were all processed using Capture One Pro, including conversion to B&W. Compared with before the hurricane, the area around the convention center has undergone significant urban development and improvement.

Barge going under Mississippi River Bridge in New Orleans, Louisiana. Image taken with a Nikon D300 and 18-200 mm lens (ISO 200, 50 mm, f/5.6, 1/800 sec). Processed with Capture One Pro (including conversion to B&W). (David J Mathre) — Barge going under Mississippi River Bridge in New Orleans, Louisiana. Image taken with a Nikon D300 and 18-200 mm lens (ISO 200, 50 mm, f/5.6, 1/800 sec). Processed with Capture One Pro (including conversion to B&W).

Seagull along Mississippi River in New Orleans, Louisiana. Image taken with a Nikon D300 and 18-200 mm lens (ISO 200, 130 mm, f/11, 1/125 sec). Processed with Capture One Pro (including conversion to B&W). (David J Mathre) — Seagull along Mississippi River in New Orleans, Louisiana. Image taken with a Nikon D300 and 18-200 mm lens (ISO 200, 130 mm, f/11, 1/125 sec). Processed with Capture One Pro (including conversion to B&W).

Seagull along Mississippi River in New Orleans, Louisiana. Image taken with a Nikon D300 and 18-200 mm lens (ISO 200, 150 mm, f/11, 1/125 sec). Processed with Capture One Pro (including conversion to B&W). (David J Mathre) — Seagull along Mississippi River in New Orleans, Louisiana. Image taken with a Nikon D300 and 18-200 mm lens (ISO 200, 150 mm, f/11, 1/125 sec). Processed with Capture One Pro (including conversion to B&W).

Dusita Narre under Mississippi River Bridge in New Orleans, Louisiana. Image taken with a Nikon D300 and 18-200 mm lens (ISO 200, 95 mm, f/5.6, 1/1250 sec). Processed with Capture One Pro (including conversion to B&W). (David J Mathre) — Dusita Narre under Mississippi River Bridge in New Orleans, Louisiana. Image taken with a Nikon D300 and 18-200 mm lens (ISO 200, 95 mm, f/5.6, 1/1250 sec). Processed with Capture One Pro (including conversion to B&W).

Seagull along Mississippi River in New Orleans, Louisiana. Image taken with a Nikon D300 and 18-200 mm lens (ISO 200, 170 mm, f/5.6, 1/400 sec). Processed with Capture One Pro (including conversion to B&W). (David J Mathre) — Seagull along Mississippi River in New Orleans, Louisiana. Image taken with a Nikon D300 and 18-200 mm lens (ISO 200, 170 mm, f/5.6, 1/400 sec). Processed with Capture One Pro (including conversion to B&W).

Seagull, Dusita Naree, and Bridge along the Mississippi River in New Orleans, Louisiana. Image taken with a Nikon D300 and 18-200 mm lens (ISO 200, 90 mm, f/22, 1/60 sec). Processed with Capture One Pro (including conversion to B&W). (David J Mathre) — Seagull, Dusita Naree, and Bridge along the Mississippi River in New Orleans, Louisiana. Image taken with a Nikon D300 and 18-200 mm lens (ISO 200, 90 mm, f/22, 1/60 sec). Processed with Capture One Pro (including conversion to B&W).

Seagull along the Mississippi River in New Orleans, Louisiana. Image taken with a Nikon D300 and 18-200 mm lens (ISO 200, 170 mm, f/8, 1/160 sec). Processed with Capture One Pro (including conversion to B&W). (David J Mathre) — Seagull along the Mississippi River in New Orleans, Louisiana. Image taken with a Nikon D300 and 18-200 mm lens (ISO 200, 170 mm, f/8, 1/160 sec). Processed with Capture One Pro (including conversion to B&W).

Sunday (09-March-2008) — Colorado

Winter in Colorado: Longs Peak Panorama.

While driving back to Boulder from Rocky Mountain National Park on Colorado Highway 7, I stopped to take some pictures of Longs Peak. Longs Peak at 14,255 feet is one of 54 mountains in Colorado over 14,000 feet. Several of the images were combined to afford a wider panorama including Estes Cone to the right. Estes Cone looks to be almost the same height as Longs Peak, but is only 11,006 feet.

Longs Peak Panorama - Winter in Rocky Mountain National Park. Image taken with a Nikon D3 and 24 mm f/2.8 lens (ISO 200, f/11, 1/500 sec) (David J. Mathre) — Longs Peak Panorama – Winter in Rocky Mountain National Park. Image taken with a Nikon D3 and 24 mm f/2.8 lens (ISO 200, f/11, 1/500 sec)

Saturday (08-March-2008) — Colorado

Photo Techniques: Macro Images & Image Post Processing.

A macro image of President Grant converted to false colors using a Nik Color Efex Pro 3 “Infrared Thermal Image” filter. Notice the “The United States of America” micro-print.

Grant up Close. Image taken with a Nikon D300 and 105 mm f/2.8 macro lens (ISO 200, f/4, 1/250 sec, flash). NIK Color Efex Pro 3 Infrared Thermal Filter used to change the colors. (David J Mathre)

Wednesday (27-February-2008) — Utah

Elderhostel “Photography in the Southwest” Workshop Day 3. Hovenweep National Monument.

The Elderhostel “Photography in the Southwest” workshop was based at Kelly Place B&B just outside of Cortez Colorado. This is a great location in McElmo Canyon, quiet and remote. It borders Canyon of the Ancients National Monument. The following images were taken in and around Hovenweep National Monument in Utah.

Hovenweep National Monument. (David J Mathre)