Marc Alhadeff from SonyAlpha.Blog posted the world’s first review of the new Tamron 20mm f/2.8 FE lens:

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The Tamron 20mm F2.8 Di III OSD M 1:2 (450 euros) is an excellent wide angle lens

It is part a set of new Prime lenses with all a short focusing distance , a 1:2 magnification ratio, a F2.8 aperture,  same length, same weight

If you compare it with the 24mm F2.8 (code F051) & the 35mm F2.8 (code F053) on A7RIV you maybe a bit disappointed as performances are less stellar

But if you compare it with all other primes around 18-21mm , the Tamron is one of the best available in term of sharpness, on par with a few others  but at a fraction of the price and its very short focusing distance allow it to provide the best bokeh/background blur among all of them

If you only have a A7III with only 24Mpix and have already the  Tamron 17-28mm F2.8 you  won’t see a lot the difference in sharpness, if you have a 42Mpix or 61Mpix , the upgrade is worth it

Highly recommended for wide angle shooter

Pros

• Excellent sharpness on the entire frame as of F5.6
• Very good sharpness in the centre wide open
• Very good background blur and color rendition
• Very short focusing distance allowing to reach 1:2 magnification
• Very compact and light : discrete and going well for video on a Gimbal
• Moderate price
• Very Good resistance to flare
• Very low chromatic aberrations

Average

• Good build quality (but much lower than GM)
• Vignetting is moderate (to be corrected in a future Lightroom Lens profile)
• Corners are only good at F2.8 and require to be closed down to F5.6 to reach their max sharpness
• Fast and reliable AF in photo but sometimes hesitation in AFC in the corners

Cons

• Lot of distorsion (to be corrected in a future Lightroom Lens profile)
• Noisy AF in Video and not regular

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All links to the new Tamron FE primes:
Tamron 20mm  f/2.8 at Adorama, FocusCamera and BHphoto.
Tamron 24mm  f/2.8 at Adorama, FocusCamera and BHphoto.
Tamron 35mm  f/2.8 at Adorama, FocusCamera and BHphoto.

Sigma 24-70mm FE lens at Amazon, BHphoto, Adorama, Calumet DE, FocusCamera. WexUK

Cory Rice (Click here) tested the new Sigma 24-70mm FE lens and concludes:

Sigma has proven again and again that is capable of producing third-party lenses that give proprietary Nikon, Canon, Pentax, and Sony glass a run for their money at a fraction of their costs. I found this lens to to be no exception. Will it cause me to ditch my trio of primes? Of course not. We’ve been through too much together to say goodbye now. Will I clear a spot for Sigma’s latest zoom in my “everyday” bag? I can’t help thinking that I might.

Gerald Undone and Christopher Frost posted these 24-70mm lens video reviews:

Here are three videos shot with the AIVASCOPE 1.5x anamorphic lens on the Sony A7sII

Here are the characteristics of the Aivascope 1.5x lens:
Designed for Full Frame systems.
Recommended taking lenses for full frame (16:9 aspect ratio) from 50mm to 90mm
Single focus From 80cm to infinity.
Non rotating front element.
Focus ring rotate 190 degrees.
Lens mounting clamp 52mm
Filter size 82mm
Weight 700 gr.
Integrated focus gear.
Price : 2 250,00 €

Aivascope facebook page: https://www.facebook.com/aivascope/

Fengniao posted those 24mm (Click here) and 35mm (Click here) unboxing images!

All links to the new Tamron FE primes:
Tamron 20mm  f/2.8 at Adorama, FocusCamera and BHphoto.
Tamron 24mm  f/2.8 at Adorama, FocusCamera and BHphoto.
Tamron 35mm  f/2.8 at Adorama, FocusCamera and BHphoto.

Here is the 24mm lens:

Here is the 35mm lens:

Photons to Photos posted this DxOmark derived Sony A7rIV dynamic range measurement. As you can see the performance is about the same as on the previous A7rIII model.

Sony A7rIV and new accessories:
Sony A7rIV in USA/CA at BHphoto, Adorama, FocusCamera, Amazon, Henrys.
Sony A7rIV in EU at Calumet DE, ParkUK, WexUK, Calumet NL.
Sony A7rIV in Asia at Sony Japan. Sony Australia.
Sony VG-C4EM grip in USA at BHphoto, Adorama, Amazon, FocusCamera, ParkUK, WexUK.
ECM-B1M Digital Audio Shotgun Microphone at BHphoto, Park UK.
XLR-K3M Mic at BHphoto, Park UK.

Sigma 35mm f/1.2 FE at Adorama, BHphoto, Amazon, FocusCamera, Henrys. In EU at Calumet DE, ParkUK, WexUK.

Lenstip tested the new Sigma A 35 mm f/1.2 DG DN lens:

Sigma has entered the full frame mirrorless optics segment in a very decisive manner. Not only they presented a lens with unique parameters but they also took care of image quality, so the lens is able to offer you excellent shots across the frame. It is a really huge achievement because edges of the frame were notoriously difficult for even expensive, mirrorless constructions.

Still there is a price to be paid for that performance. Despite significant physical dimensions and a hefty weight you have to make do with huge vignetting and weak distortion correction. Perhaps the decision not to correct that aberration was crucial in order to ensure high resolution across the frame but, in our opinion, the slip-up with flares was avoidable; as it is, you can catch ghosting even if the source of bright light is far away from the frame corner. It’s a pity the constructors didn’t try harder.

Lately Sigma have got us used to outstanding constructions without any flaws. Does it mean we are entitled to criticize the 1.2/35 model? Not at all – at least as long as somebody presents a better lens with the same parameters. So far, the Sigma remains matchless and we should enjoy its unique parameters and quite good performance.

The following is a guest post from Kolarivision:

The Sony A7R IV Disassembly and Teardown

2020 is just around the corner, and if there is one thing we can be sure of, it’s that Sony probably isn’t going to be slowing down. While every iteration of the different A7 and a6000 camera lines launch with significant improvements over their predecessors, the most recent A7R took leaps and bounds in both capability and design progress. We’re at 61 megapixels on a full-frame now. The A7R IV brought us here, past the D850, the 5Ds, and even Fuji’s GFX 50 cameras. With that, it brings a 10fps continuous drive rate and all the top-notch AF and video capability we’ve come to expect from Sony. The body itself is just a little different on the outside. The grip is definitely a little beefier than before. The Nikon Z and Canon EOS R cameras’ design and ergonomics were very well received, and it makes sense for Sony to adopt as much of that “DSLR-feel” as they can. But, despite the subtle ergonomic improvements, the A7R IV is still a uniquely brick-like camera with all its rectangles and stepped edges. I don’t know about you, but at this point, I really don’t want them to change.