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Sony 12-24mm f/2.8 GM

NEW! Available for pre-order.

3 XA Elements, 2 Super ED elements, nano AR II and fluorine coatings, four focusing motors, dust and moisture sealed.

Sigma 70mm f/2.8 Macro Aperture Series: Mosaic (Sony A7R IV)

  
Sigma 70mm f/2.8 Macro Aperture Series

This series evaluates the Sigma 70mm f/2.8 DG Macro from f/2.8 through f/8 on an extremely demanding target: a planar subject with exceedingly fine detail. This target is among the most demanding any lens can face, inexorably showing most all lens weaknesses.

Of keen interest here is focus shift, which is the kiss of death on a ~40MP sensor, let alone a 60MP sensor. When it happens in the central area of the frame, it is a serious problem.

Sigma 70mm f/2.8 Macro Aperture Series (Sony A7R IV)

Includes images from f/2.8 to f/8 at up to full camera resolution.

f8 @ 1/20 sec pixel shift, ISO 100; 2019-09-17 18:54:19
Sony A7R IV + Sigma 70mm f/2.8 DG Macro Art
RAW: LACA corrected, vignetting corrected, USM {8,50,0}

[low-res image for bot]
Save Big $$$$ on Memory for 2019 Mac Pro

Up to 65% better pricing than Apple

Lloyd recommends 32GB RDIMM modules for most users (more expensive LRDIMMS are for 512GB or more).



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Olympus OM-D E-M1X Mirrorless Digital Camera (Body Only)
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