Almost five years since the announcement of the Sony a7S II, Sony finally launches it’s long-anticipated successor The Sony Alpha 7S III ($3,498 USD – begins shipping in September)
Improved 12.1-megapixel back-illuminated sensor (BSI) with 3X faster readout than previous generation to greatly reduce rolling shutter effect. I know that a number of people had hoped for a bit more resolution and a jump to 16mp, but 12mp is the exact resolution needed for native 4K video. Anything over 12 mp would require line-skipping for video until you get to 24mp at which point it’s possible to downsample, but Sony already makes 24mp a7 and a9 cameras.
For those who want larger output, my suggestion is to Export Raws from Lightroom Classic CC or Adobe Camera Raw at 6000px x 6000px which will give you 24mp output. Always do this using Raw images for best results.
New dual BIONZ-XR processors with eight times the computing power as the previous image processor
Fully articulated 3.0 inch LCD monitor with 1.44 million points allows touch operation of the menus
Dual memory card slots allow use of either UHS-II SD cards or CFexpress type A cards in each slot. Sony CFexpress Type A cards will be available in September in80 GB & 160 GB capacities with a 700 MB/s write speed and 800 MB/s read speed. The new CFexpress type A cards are smaller than Type B cards and faster than SD cards. In addition to 4:2:2 internal recording CFexpress type A cards also allow 1000 continuous uncompressed raws. CFexpress is only required in S&Q mode with 4: 2: 2 color subsampling and 10 bit color depth.
First a7S Series camera to add Phase Detection AF for fast hybrid autofocus 759 phase detection points and 425 with contrast AF points covering 92% of the image sensor.
World’s brightest and largest 9.44 million point OLED viewfinder with 0.9x magnification.
Sony a7S III features larger and more prominent controls and button including a red record button on the camera’s top panel.
Completely redesigned touch screen menu system offers better clarity for both stills and video.
A new graphite passive cooling heat sink is designed to prevent overheating. Many reviewers have recorded several hours of continuous video without overheating.
• 4K 120p recording with 1.1x crop allows continuous recording up to one hour without overheating
• 4K 60p recording with full-pixel readout without pixel binning and without crop up is also rated for at least one hour
• Full HD up to 240p
• Internal recording with 4:2:2 color subsampling and a color depth of 10 bits.
Full size HDMI 2.1 port provides a more secure connection than HDMI mini.
HDMI 2.1 allows 4K / 60p as 16-bit ProRes Raw output to an Atomos recorder.
New codecs are available: XAVC-S-I records single images (All-I) with a data rate of up to 500 Mbits/s,
XAVC-HS reduces the amount of data in image group compression to 200 Mbit/s thanks to H.265 compression.
S-Log 2 and S-Log 3 gamma profiles can be applied starting at ISO 640 (extended: ISO 160).
• Improved color-science matches Sony FX-9 and Sony Venice Cinema Cameras
• For time-lapse recordings, lower frame rates can be selected in S&Q mode.
• Rolling shutter effect has been significantly minimized with 3X faster scan times than previous generation.
5-axis IBIS achieves an effectiveness of 5.5 f-stops, measured according to the CIPA standard with greater possible using Sony OSS lenses. In video mode, digital stabilization (active mode) is also used, which also uses a gyro sensor. The information from this gyro sensor can also be stored in the metadata of the videos so that it can be used in post-processing for digital stabilization.
Eye AF for humans and animals is effective fr=om greater distances than ever before.
Sony a7S III offers greater control of AF Transition Speed and Subject Shift Sensitivity than previous models to allow for smoother focus pulls and greater ability to remain “sticky” on the subject.
• AF sensitivity goes down to -6 EV
• 10 frames/s continuous shooting. Silent and Mechanical shutter up to 1/8000 sec
• Uses Sony NP-FZ100 batteries, which can be charged via USB-C.
• Continuous power supply via USB is also possible.
Order Sony a7S III Camera ($3,498 from B&H Photo | Amazon | Adorama)
Order Sony 80GB CFexpress Type A TOUGH Memory Card ($198 from B&H Photo | Amazon)
Order Sony 160GB CFexpress Type A TOUGH Memory Card ($398 from B&H Photo) | Amazon)
Order Sony MRW-G2 CFexpress Type A/SD Memory Card Reader ($118 from B&H Photo) | Amazon)