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EXCERPT page containing first few paragraphs. 2022-05-16 01:10:02

Sony A7R IV
Sony FE 200-600mm f/5.6-6.3 G OSS

Examples: White Mountains Marmots

This page shows examples of marmots in the White Mountains of California, shot at 11600 feet elevation. Some handheld, some on tripod, all with image stabilization.

Includes images up to full camera resolution.

Shooting commentary

On an overcast day, I spent an hour or so photographing marmots, which are pretty tough to approach in wide open spaces. Had I been willing to sit and be patient for a day, I’m sure I could have gotten much closer eventually. However, the juveniles are much less suspicious of things and are easier to approach.

The Sony FE 200-600mm f/5.6-6.3 G OSS worked well for the task, but something up to 1200mm would be a lot more useful, as the crops show. The Sony FE 600mm f/4 GM OSS would have been ideal, with 1.4X and 2X teleconverters, but I don’t have one. Given the cropping, the Sony A7R IV with its 60-megapixel sensor was ideal for resolution vs something better for focusing, like the 50-megapixel Sony A1.

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Diglloyd Guide to Mirrorless offers comprehensive integrated coverage of most APS-C and full frame mirrorless cameras and lenses.

Special emphasis is placed on Sony full-frame, including Sony lenses and the high performance Zeiss Batis and Zeiss Loxia lenses plus Rokinon/Samyang and others. Fujifilm X, Olympus and Panasonic M4/3, Sigma dp Merrill and dp/sd Quattro are also covered in depth. Years in the making, it offers a wealth of material for choosing and using a mirrorless camera.

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  • Aperture series from wide open through stopped down, showing the full range of lens performance and bokeh.
  • Optical quality analysis of field curvature, focus shift, sharpness, flare, distortion, and performance in the field.

Want a preview? Click on any page below to see an excerpt as well as extensive blog coverage, for example on Sony.

Adult Marmot
f8 @ 1/160 sec IBIS=on EFC shutter, ISO 200; 2021-06-04 13:41:20
Sony A7R IV + Sony FE 200-600mm f/5.6-6.3 G OSS @ 600mm
ENV: White Mountain Rd, altitude 11600 ft / 3536 m, 60°F / 15°C
RAW: +20 Whites, +15 Clarity, USM {8,50,0}

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