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Upgrade the memory of your 2020 iMac up to 128GB
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Sigma 14-24mm F/2.8 DG DN Aperture Series @ 14mm: Teak Bench Closeup

This series from f/2.8 through f/11 evaluates the Sigma 14-24mm f/2.8 DG DN Art at 14mm for sharpness at close range as well as focus shift, bokeh and secondary color. Shot in pixel shift mode for absolute highest sharpness.

This is an important series to read/understand for using the Sigma 14-24 at 14mm for how it behaves for respect to focus shift.

Sigma 14-24mm F/2.8 DG DN Aperture Series @ 14mm: Teak Bench Closeup

Includes images up to full camera resolution from f/2.8 through f/11.

I am excited about the about $1399 Sigma 14-24mm F/2.8 DG DN, though not this particular sample so much as it is definitely less good on the left side than the right, which means it is “off” a little optically, e.g., lens skew. Optical designs can look great on the computer but real lenses have to be built, and production tolerances can make high performance designs that deliver the as-designed performance difficult to produce. Thus fantasy MTF charts often conflict with reality in a real lens. Another sample will arrive next week, and the best of the two I will test with on the Sony A7R IV). I plan on buying the about $1399 Sigma 14-24mm f/2.8 DG DN Art, and I will try a 3rd sample if necessary to get one that is top-grade as-built.

CLICK TO VIEW: Recommended Ultra Wide Lenses for Sony

f2.8 @ 1/13 sec pixel shift, ISO 100; 2019-09-03 19:25:51
Sony A7R III + Sigma FE 14-24mm f/2.8 DG DN Art @ 14mm RAW: LACA corrected

[low-res image for bot]

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Pentax 8x42 S-Series SD WP Binoculars
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