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Tamron 28-70mm F2.8 Review for Sony | SOOO worth it

Full list of todays Gold Box deals at Amazon, BHphoto, eBay,,,,,
12 Recommended Travel Tripods (Explora).
SLR Magic 50mm F1.1 Cine II Lens for Sony E-Mount (Personal View).
New CIPA shows sharp decline in camera sales in the month of July (MirrorlessRumors).
Samyang 35mm F1.2 ED AS UMC CS review at

Tuan:The Sony FE 24-105 f/4 is a great lens, but using a polarizing filter on it can cause severe vignetting.
See for yourself the extent of the problem and the intricacies of correcting it automatically in Lightroom processing:
Examine the results of a side-by-side comparison of five different filters, and find out which one I chose to minimize vignetting on my lens:

French review of the Sigma 20mm f/1.4 ART at

“We hope that Sigma will also design lenses directly for mirrorless in the future to optimise the capacity. Since Nikon launch their own mirrorless and soon Canon too, we will see more lenses design only for mirore less like Laowa does. In praktis, this lens has optical performance near to the perfection if you close the aperture above F4. Above F2.8 it is no more noticable vignetting, chromatic aberration and coma. The sharpness is rasor at f1.4 in the center, good at f2.8 in the border and excellent in the wall frame at F4. A really good lens for astrophotography at f2.8 and a good lens for landscape at f4. the 9 blade aperture gives you pretty stars in luminous spots. But this very good spec come with some bad news. The front element is huge and you can’t screw filters (ND, pola) without an extra filter holder. The lens is also massif and weight a lot (950g). At F1.4 you have some vignetting and you see not all the star and the coma is present but I never see the milky way that good with any lenses (at f2.8 it’s all right)!”

Personal photos and tests from SAR Admin Andrea on Instagram, Twitter, Facebook, Flickr and 500px.

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