Product Description
- 12.1mp full-frame BSI CMOS sensor
- In-Body Image Stabilisation
- Up to 15+ stop dynamic range
- 9.44m dot QXGA OLED Tru-Finder EVF, 0.90x magnification (size can be reduced if too large)
- ISO40 to ISO409600
- 4K 120p recording, 10-bit, 4:2:2
- All intra up to 600Mbps
- FullHD 240p
- New S-Gamut3.Cine
- Fast hybrid AF in all recording situations
- Real-time eye AF (in video as well), Touch-tracking
- 759 phase-detection AF points 92% coverage
- 425 CDAF points
- 10fps continuous shooting with AF/AE
- Articulated vari-angle touch-screen
- Dual slots: SD UHS-II / CFexpress Type A card support
- Z battery for longer shooting time
This camera is totally pristine with no signs of use, and you could be forgiven for thinking it was brand new. The shutter count is also an incredibly low 786 shots.
The A7S-III has larger pixels than pretty much any consumer level full-frame digital camera. The larger pixel size means that each pixel can physically collect more light. The more light per pixel, the better the signal to noise ratio for that pixel and so that pixel will more accurately detect the incoming light than a smaller pixel would. This means that, all other things being equal, the A7s should be capable of the best per pixel signal-to-noise ratio of any production camera. This means that it should arguably be the best camera for astrophotography.
The Sony Alpha A7 is a part of the Sony Alpha Series, Sony's full-frame mirrorless camera range. The whole range shares some features but each thread of the Sony Alpha Series (R, S and regular) prioritises one aspect of photography over another.
- Sony A7 R cameras prioritise Resolution over Speed (heavy cropping can be done without losing too much resolution, but you are compromising some speed).
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- Sony A7 S cameras prioritise Sensitivity (Speed) over Resolution (magnificent in low light situations at high ISO's due to the larger light gathering sensor pixels). ISO 100-102400, which is further expandable to ISO 50-409600. (A killer for Astrophotography).
- Sony A7 cameras prioritise Hybrid Shooting which is in the middle of the two - the best of both worlds!
This camera has been professionally converted to "Full Spectrum" which makes it rather fun for dabbling in infrared photography. To do this, the IR/UV blocking filter has been removed from the sensor allowing the camera to "see" light wavelengths that the human eye cannot. Because it has been converted, shooting in infrared is hand-held just as in regular photography unlike unconverted cameras which require long exposures as the camera can't see the IR properly.
I have included the four essential filters, a very special absorption type IR/UV blocking filter for the front of the lens which replaces the filter removed from the sensor. This allows you to continue to use this camera as a "normal" camera, and swapping this filter for the supplied Aerochrome (IR Chrome), 590nm and 720nm IR filter opens up a whole new world of fun.
So, everything that you will need is included. These filters are brand new.
Two batteries are included with a twin-bay charger, and the batteries can also be charged inside the camera with the supplied USB-C cable.
Extremely low shutter count of only 786 shots. (Anything under 10,000 is considered very low)
It works perfectly (as expected) and comes with everything seen in the images including a complimentary bag, 32gb SD card which can hold over 6000 full res JPEG images and a USB SD Card Reader.
All my pictures are of the actual items for sale, so what you see is what you get.
Ready to go straight out of the box.
You won't be disappointed!
Condition Meanings: Pristine - No obvious signs of use, as new.
Full Spectrum Care:
We focus on quality and longevity. Every camera we convert goes through a full diagnostic check - we test every component, and if something isn't right, we fix or replace it. So, the goal is to make sure it keeps working for years.
That level of care, combined with experience, is what keeps people coming back to us. We're not just swapping out filters - we're refurbishing and upgrading these cameras to a professional standard.
· Every camera undergoes a full multi-point diagnostic check
· Faulty components are repaired or replaced before conversion
· We calibrate infinity focus, ensuring compatibility with any lens
· Specialising also in high-end Sony models: A6000 series, A7 series
· Each unit is tested and tuned for long-term reliability
· Direct support from who performs the work - no outsourcing
In these Sony cameras, the sensor sits on shafts that are calibrated for each specific unit - not just the model, but each individual camera. We measure these shafts with 0.01mm precision (10 microns) and adjust then so the camera can properly focus at infinity. It's a process that requires experience.
Not all conversion services perform thorough focus calibrations as part of their process. It is worth asking specifically about their focus calibration procedure. Our Shimming for perfect infinity Autofocus after a Full Spectrum Conversion article goes into the finer details about our process.
If you are new to IR photography, you will need a photo editor in order to properly white balance and colour swap the red and blue channels for the desired colour balance effects and blue skies. Without editing you will not have good pictures. I can fully recommend "Raw Therapee" which is free and does everything. This is what I use myself. Once you get the hang of it you will find it easy to use, and there are plenty of tutorial videos online.
Everything is sent by First Class Post (Tracked 24) in order to get it to you as quickly as possible.
Shipping to the USA from the UK via the Global Shipping Program is a reliable 6-8 Days. (Based on experience, and not eBay predictions. Speed may vary around Xmas, New Year & Public Holidays and I do not guarantee this.) All US duties & taxes are taken care of by eBay at checkout, so there will be no extra costs on delivery.
Questions & Answers:
Q: Why does the sensor on a Sony A7S III look crooked and loose? (when switched off)
A: The sensor on the Sony A7S III looks crooked because the In-Body Image Stabilization (IBIS) is unpowered and freely suspended. When the camera is off, the mechanism relaxes to its resting position. Once you turn the camera on, the electromagnets engage and automatically straighten the sensor into perfect alignment.
Q: Can I still clean the sensor as I normally would on your Full Spectrum cameras?
A: Absolutely you can, the sensor is not "naked". Under the filter that has been removed from the sensor remains a very hard permanent factory fitted glass which protects the sensor.
Q: Will the camera still focus properly at infinity after a conversion?
A: In these Sony cameras the sensor sits on shafts that are calibrated for each specific unit, not just the model, but each individual camera. We measure these shafts with 0.01 mm precision (10 microns) and adjust them so the camera can properly focus at infinity with any lens. It's a process that requires experience!
The other option would be to replace the removed filter stack with material of equivalent thickness, but this is not how we do it! This involves using optical glass or performing a permanent fixed-wavelength conversion (e.g., for 720nm or similar). It's a tricky method, and image quality can suffer depending on the quality of the replacement glass.