Photographic Techniques. Resolution and Focus Testing.
I must have been bored, so spent an afternoon doing some autofocus and resolution testing with some of my cameras and lenses. The goal was to see which combination would be able to focus and provide the highest resolution image of Alexander Hamilton. Ideally, sharp enough 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 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 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)
Gone to See the World. Semester at Sea Spring 2016 Voyage on the MV World Odyssey. Day 62: At Sea, Indian Ocean.
Group Photo of the 50+ Shellbacks that had their head shaved on Neptune day after the crossing the equator. Image taken with a Fuji X-T1 camera and a Zeiss 12 mm f/2.8 lens.
Group Photo of the 50+ Shellbacks that had their head shaved on Neptune day after the crossing the equator. Image taken with a Fuji X-T1 camera and a Zeiss 12 mm f/2.8 lens. (David J Mathre)
Early purple crocuses flowers from across the street. This is a composite of many images using the focus stacking program from Helicon Focus. A little bit bright, and requires calm conditions (little or no wind).
Purple crocus blooms. Late winter nature in New Jersey. Composite of 18 focus stacked images taken with a Nikon D3x camera and 200 mm f/2 lens (ISO 400, 200 mm, f/5.6, 1/500 sec). Raw images processed with Capture One Pro and Helicon Focus (method C) (David J Mathre)
Waxing Gibbous Moon. Image taken with a Nikon 1 V1 camera, FT1 adapter, and 600 mm f/4 VR lens (ISO 100, 600 mm, f/8, 1/100 sec). With this sensor, the field of view (FOV) is equivalent to a 1620 mm lens on a 35 mm DSLR.
Waxing Gibbous Moon. Image taken with a Nikon 1 V1 camera, FT1 adapter, and 600 mm f/4 VR lens (ISO 100, 600 mm, f/8, 1/100 sec). With this sensor, the field of view (FOV) is equivalent to a 1620 mm lens on a 35 mm DSLR. (David J Mathre)
The temperatures dropped from nearly 70°F (~20°C) yesterday to below freezing most of today. It was sunny most of the day, so the solar panels were generating electricity (50.3 kWh). Later in the afternoon some clouds rolled in, and we had a quick snow storm. I went out to get some pictures of the flowers that recently bloomed across the street with the recent snow before the sun went down. I also got some pictures of a turkey vulture soaring above my backyard in the late afternoon sun.
Although my neighbor got lots of maple sap from his trees this year, the tap he put in my maple tree didn’t produce much. Since it did get cold again, I will drill a new hole and see if I get anything. Maybe, my maple tree feels it already gave too much to the cicadas that live for 13 or 17 years under the tree.
After the storm passed, some clouds lit up as the sun went down.
Daffodils after a quick snowfall. Winter nature in New Jersey. Image taken with a Nikon Df camera and 70-200 mm f/2.8 lens (ISO 400, 200 mm, f/2.8, 1/200 sec). (David J Mathre)Twin daffodils after a quick snowfall. Winter nature in New Jersey. Image taken with a Nikon Df camera and 70-200 mm f/2.8 lens (ISO 400, 200 mm, f/2.8, 1/125 sec). (David J Mathre)Daffodil bloom after a quick snowfall. Winter nature in New Jersey. Image taken with a Nikon Df camera and 70-200 mm f/2.8 lens (ISO 400, 200 mm, f/2.8, 1/100 sec). (David J Mathre)Snow drops after a quick snowfall. Winter nature in New Jersey. Image taken with a Nikon Df camera and 70-200 mm f/2.8 lens (ISO 400, 200 mm, f/2.8, 1/250 sec). (David J Mathre)Early blooming purple crocuses after a quick snowfall. Winter nature in New Jersey. Image taken with a Nikon Df camera and 70-200 mm f/2.8 lens (ISO 400, 200 mm, f/2.8, 1/160 sec). (David J Mathre)Turkey vulture soaring in the late afternoon sun. Winter nature in New Jersey. Image taken with a Nikon Df camera and 70-200 mm f/2.8 lens (ISO 400, 200 mm, f/2.8, 1/800 sec). (David J Mathre)Turkey vulture soaring in the late afternoon sun. Winter nature in New Jersey. Image taken with a Nikon Df camera and 70-200 mm f/2.8 lens (ISO 400, 200 mm, f/2.8, 1/640 sec). (David J Mathre)Turkey vulture soaring in the late afternoon sun. Winter nature in New Jersey. Image taken with a Nikon Df camera and 70-200 mm f/2.8 lens (ISO 400, 200 mm, f/2.8, 1/500 sec). (David J Mathre)Turkey vulture soaring in the late afternoon sun. Winter nature in New Jersey. Image taken with a Nikon Df camera and 70-200 mm f/2.8 lens (ISO 400, 200 mm, f/2.8, 1/500 sec). (David J Mathre)Maple sap collection bucket after a quick snowfall. Winter nature in New Jersey. Image taken with a Nikon Df camera and 70-200 mm f/2.8 lens (ISO 400, 200 mm, f/2.8, 1/250 sec). (David J Mathre)South facing solar panels with a light coating of snow. Winter Nature in New Jersey. Image taken with a Nikon Df camera and 70-200 mm f/2.8 lens (ISO 400, 70 mm, f/2.8, 1/400 sec). (David J Mathre)Colorful clouds at sunset after a quick snowstorm. Winter Nature in New Jersey. Image taken with a Leica T camera and 18-56 mm lens (ISO 100, 29 mm, f/4.4, 1/125 sec) (David J Mathre)Backyard tree at sunset. Winter Nature in New Jersey. Image taken with a Leica T camera and 18-56 mm lens (ISO 100, 18 mm, f/3.5, 1/200 sec) (David J Mathre)
