According to the recent patent surfaced, Sigma is working on a brand new lens with a focal length of 28 to 85mm f2.8, and not only this lens in the same patent document you will also find the 24 to 70 mm F2.8 as well as the 28 to 70 mm F2.8.
As we all know there is a huge market for 24 to 70 mm focal range with a 2.8 aperture and the biggest problem is native lenses of Sony’s are costly or either you have to buy an F4 aperture or variable aperture based native kit lens, and so these third-party lens makers aggressively working in this particular focal range to offer multiple solutions to consumers at an affordable price tag to gain maximum market share possible.
Popular Sony Lenses among photographers and cinematographers
A long time ago, Tokina had a zoom called AT-X28-80mm f2.8. At that time, everyone was surprised at the brightness and the low price. I think Sigma wants to create the same lens again.
Patent Details
Applicant: Sigma Co., Ltd.
Publication number: P2022067732
Application number: P 2020176481
Publication date: 2022-05-09 Title
of invention: Large-diameter zoom lens
More patent details here
Example 1 (24-70mm F2.8)
Zoom ratio 2.75 Wide-
angle intermediate telephoto
focal length 24.72 39.76 67.98
F number 2.92 2.92 2.92
Full angle of view 2ω 85.24 56.96 34.33
Image height Y 21.63 21.63 21.63
Lens total length 135.00 145.60 171.09
Back focus 17.6206 17.6036 17.5749
Example 3 (28-70mm F2.8)
Zoom ratio 2.35 Wide-
angle intermediate telephoto
focal length 28.81 40.01 67.69
F number 2.92 2.92 2.92
Full angle of view 2ω 75.92 56.06 33.85
Image height Y 21.63 21.63 21.63
Lens total length 120.04 126.08 142.66
Back focus 19.6292 19.5884 19.6020
Example 4 (28-85mm F2.8)
Zoom ratio 2.90 Wide-
angle intermediate telephoto
focal length 28.79 49.98 83.51
F number 2.92 2.92 2.92
Full angle of view 2ω 75.61 45.42 27.77
Image height Y 21.63 21.63 21.63
Lens total length 135.02 146.97 164.94
Back focus 17.6146 17.5433 17.5817
How good is the new lens? does Sony also improve the autofocusing to not? Does the lens does fast AF while shooting in MAX or MIN aperture.. let’s find out all the answers in the test videos below.
The test is done by the asobinet.com website, The Lens is available for pre-order at B&H Photo Sales will start from June 2022 worldwide.
Findings from the test (Translated)
It uses an XD linear motor and a floating focus structure.
The focus drive has been switched from the previous model, but there is no big difference in the focus speed. The GM2 is a little faster at AF-C, but this is also a difference that you can’t tell unless you compare the shots in the same environment.
Manual focus operates with a linear response. The operability is easy to use even for video-oriented users.
The shortest shooting distance is 0.21m / 0.30m, and the maximum shooting magnification is 0.32x, which is very good.
Sony FE 24-70mm F2.8 GM II Images and specification, announcement soon
FE 24-70mm f/2.8 GM II
– SEL2470GM2
– Minimum focusing distance: 21cm
– Filter diameter: 82mm
– Weight: 695g
– Overseas price: 2099 British Pound Sterling, 2399 Euros
The FE 24-70mm F2.8 GM II, which is rumored to be announced today at 23:00 JST, leaked image, spec, and price information. The source of the information is a thread related to E-mount lenses on a huge bulletin board, and it seems that the person who posted the image is the usual person.
Although the total length is not known from the specifications, it weighs 695 g, which seems to be considerably lighter than the current model. Also, the shortest shooting distance is considerably shorter. It seems that the lens barrel is equipped with an aperture ring, which was confirmed in the previous leak image.
According to the latest rumors surfaced over the web, Sigma 70-200 F2.8 DG DN Fullframe Contemporary Lens for Sony E mount is expected to arrive at the end of 2022 or at the very beginning of 2023. We will post more updates as soon as we get more information about this.
The latest news coming from Japan, according to the dclife.jp website Kitamura (one of the largest chains of camera stores) suspended the sales of the sony APS-C range of cameras and also stopped taking pre-orders.
Orders for Sony “α6600”, “α6400”, and “VLOGCAM ZV-E10” have been suspended due to delays in parts procurement due to the effects of global semiconductor shortages. You can also check the notation “Cannot purchase”.
We have to understand the chip shortage is not only for the APS-C lineup of cameras, Sony is using all its available resources to keep up the supply of full-frame cameras.
TNC Take – So, what we are discussing here, is the impact that is visible to our eyes. Let’s discuss the un-seen impact of the chip-shortage aka semiconductor shortage
Sony will not repeat the mistakes again as they did in the past, they have under-estimated the chip shortage issue. Now, as usual until and unless the issue gets resolved we won’t see any new APS-C Mirrorless camera announcement from Sony.
Why is Sony only Facing such a huge impact, whereas Canon M50 Mark II & Nikon Z50 is in stock right now? So, possibly there are two strong reasons
1. Canon and Nikon are able to manage the situation better than Sony OR
2. Due to very high demand and popularity Sony is not able to cope with the market.
The second point looks more logical to me since Sony announced Sony ZV-E10 and Sony A7 IV just prior to the chip shortage issue, and undoubtedly both of the cameras features class-leading core specification at their price range. Sony is more trouble than other camera makers is only due to the high demand.
2. Semiconductors Shortage affecting the camera industry
Why the hell semi-conductors will affect the camera industry in any way? But, I am from an engineering background and I can assure you that nowadays semiconductors are being used in each and every device which can process data in any form.
3. The reason behind the Shortage of Chips in 2022 aka semiconductor
After doing a little research I came to know there are three basic factors responsible for the global chip shortage
The COVID Backlog
Expansion vs Demand (Semi-conductor manufacturing units expansion not happing as per the demand of the market)
Crypto Currencies Miners raised the demand for semiconductor to the next level.
4. When will the Global chip shortage get resolved?
2022 will remain the way it is. But from 2023 we may see some sunshine. Intel helping our European Union to set up a semiconductor manufacturing unit there, TSMC (renowned chip maker) said it will invest $2.87 billion to expand production capacity in China. Many efforts have been taken worldwide in a big and small ways to resolve the chip shortage issue asap. So, the issue will get resolved but not very soon.
Sony A7C is actually a compact A7 III camera made for Vloggers, with fewer physical controls and a compact design we are almost getting the same core specification in both of these cameras.
According to the latest rumors that surfaced over the web, the Sony A7C Mark II announcement is scheduled for Sep /Oct 2022. Earlier info suggests the camera sensor remains the same as 24MP, new improved image processor with a 10bit recording option and a new menu interface. It looks like Sony doesn’t want to mess up with the sales of the existing Sony A7 IV camera by realising an A7C Mark II with almost similar core specifications.
UPDATE: The Sony A7C Mark II is rumored to feature 33MP Sensor of A74 camera expected to arrive in Q3/Q4 of 2023
We are getting a lot of comments and emails from our users related to the Sony A7 IV heating problem. So, in this article, we will discuss the possible fix for the Sony A7 IV heating issue.
The most common question we get
If the Sony A7S 3 and Sony A7 4 use the same heat sink unit then why does the A74 camera get overheat quickly?
I am using Sony A73 camera, never faced overheating issues like I am facing in Sony A74 ?
My Sony A6400 never gets heated while recording 4k, then why A7 IV get shutoff after 20 min?
Answer: you have to understand that A7 IV does oversample from a 33 MP Sensor / it record oversampled 7k+ file for obtaining highest quality possible. Sony A6400 camera does oversample from a 24MP sensor and manages heat and Sony A73 camera also does the same.And finally, the A7s 3 uses a 12 MP (perfect resolution for 4k video) sensor that doesn’t need to oversample or downsample files. Due to the high-resolution sensor and heat-sink unit of the Sony A7s3 camera the overheating issue is coming, Sony needs to implement a better heat-sink system inside Sony A7 4 camera compared to the A7S3.
Sony A7 IV Overheating Fix
The simple methods that will fix the overheating problem of the Sony A7 IV camera are. Keep the display screen away from the camera body, it helps to dissipate heat much faster.
1. Power Setting options (Recommended)
Power Setting option (9) > Auto Power OFF Temp. > High. This is the most important set to increase the threshold of the camera. After selecting High, yes the camera body will get overheated but the camera will keep recording to the maximum extent possible.
2. Sony A7 IV File Format Settings (Recommended)
Select XAVC HS 4K mode, the big reason behind the selection the mode uses H.265 codec for compression, and the file size is approx 2x smaller than the file size we get in H.264 codes. And one of the major advantages we get after selecting this mode we are also getting roughly 2X more recording time with the camera. The only know issue with this model is the frame rates are fixed at 4K 60fps.
3. Movie Settings (Optional)
Once you have selected the XAVC HS 4k mode, Movie Settings > Record Settings > 150M 4:2:0 8bit. If you will select the 8bit recording mode it will create less pressure in the image processor of the camera resulting in less heat generation.
4. Proxy Recording Off (optional)
Keep your proxy Recording Setting off
5. Invest in CF Express Cards (Highly Recommended)
Regular SD Cards tend to generate more heat, better to invest in a CF-express SD card for recording HQ video from Sony A7 IV.
Try the recommended methods first, even after that the overheating time isn’t extended compared to earlier settings then also try the optional steps I have recommended in the 3rd, 4th, and 5th points.
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