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Memory Upgrades for 2019 Mac Pro - Save Up to 65% vs Factory Costs
OWC Envoy Express

World’s first Thunderbolt 3 M.2 NVME SSD enclosure.

Super fast, bus-powered, 3.3 oz, DIY easy, rugged and compact!


See also OWC Express 4M2
√ No more slow and noisy hard drives!

Sigma FE 105mm f/1.4 DG HSM Art Examples: Alabama Hills (Sony A7R IV)

I’ve added two examples below at full resolution in:

Sigma FE 105mm f/1.4 DG HSM Art Examples: Alabama Hills

I just love how the Sigma FE 105mm f/1.4 DG HSM Art delivers outstanding real (actual) depth of field. It makes a terrific lens for panoramas and stitched images.

I really should buy this sample, because it shows perfect symmetry and amazing sharpness, better than the sample I tested on the Nikon D850 some time ago, even though the sensor on the Sony A7R IV raises the ante to 60MP.

CLICK TO VIEW: Outstanding Sigma Lenses for Sony FE

This 2 X 2 stitched 129-megapixel image surely contains more detail than I could have obtained with the PhaseOne IQ4 150 megapixel, that is, because of lens quality and depth of field. At about 1/10 the cost.

Granite formation in Alabama Hills, Pre-Dawn Glow
f8 @ 1.6 sec electronic shutter stitched from 4 frames (2 X 2) cylindrical, ISO 100; 2020-03-24 06:33:40
Sony A7R IV + Sigma FE 105mm f/1.4 DG HSM Art
ENV: Alabama Hills, altitude 5150 ft / 1570 m, 30°F / -1°C
RAW: LACA corrected, distortion corrected, vignetting corrected

[low-res image for bot]
Lone Pine Peak to Mt Whitney, Pre Dawn
f3.2 @ 20.0 sec EFC shutter panorama 6 frames cylindrical, ISO 100; 2020-03-24 06:07:38
Sony A7R IV + Sigma FE 105mm f/1.4 DG HSM Art
ENV: Alabama Hills, altitude 5150 ft / 1570 m, 30°F / -1°C
RAW: LACA corrected, distortion corrected, vignetting corrected, USM {8,50,0}, SmartSharpen{40,0.7,20,0}

[low-res image for bot]
Lone Pine Peak to Mt Whitney, First Sunlight
f4.5 @ 1/60 sec electronic shutter panorama 6 frames reposition, ISO 100; 2020-03-24 06:48:52
Sony A7R IV + Sigma FE 105mm f/1.4 DG HSM Art
ENV: Alabama Hills, altitude 5150 ft / 1570 m, 30°F / -1°C
RAW: LACA corrected, distortion corrected, vignetting corrected, +30 Shadows, +40 Whites, USM {8,50,0}, SmartSharpen{30,0.7,20,0}

[low-res image for bot]
OWC Accelsior 4M2 PCIe SSD
6000 MB/sec!
Mac or PC.


Ideal for Lightroom, Photoshop, video.
Capacity up to 16TB!
OWC Thunderblade Thunderbolt 3 SSD

Blazing fast, up to 16TB.

YEE HAH!



√ No more slow and noisy hard drives!
OWC Envoy Pro EX SSD
Blazingly fast Thunderbolt 3 SSD!

Up to 4TB capacity, USB-C compatible.

USB-C model also available


Great for travel or for desktop!

MacPerformanceGuide.com
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Lexar 128GB Professional 2000x UHS-II SDXC Memory Card
$170 $120
SAVE $50

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