Browsing: a7s

[vimeo]http://vimeo.com/101260603[/vimeo] I’ve had the A7S for over a week now and can share my initial thoughts, even some firm conclusions. Here’s one I’ve come to already – the Sony A7S is the best consumer camera Sony have ever made. For $2500 the video performance of the A7S sits between the FS700 ($8000) and F5 ($17,000) yet the full frame sensor lends more character and allows for groundbreaking low light performance.

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[vimeo]http://vimeo.com/101227369[/vimeo] Only a few years ago S-LOG was a $3800 upgrade for the Sony CineAlta F3, itself a $15,000 camera. S-LOG made its debut on the Sony F35, a workhorse of Hollywood. Now Sony have put this on a $2500 consumer camera along with the best full frame sensor I have ever used for video. How good is it? Very!! I am sharing a pack of LUTs for the A7S…

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The A7S is so close to being a ‘complete’ system for high end video quality in a small prosumer camera, but there’s one issue that has quite rightly been highlighted by filmmakers such as Andrew Wonder and that is the rolling shutter distortion. The A7S actually has a very fast sensor with high efficiency made possible by the latest technology but because it does not skip any lines when reading out…

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Picture (“Buddy”) courtesy of James Miller, inset – the CYP 4K HDMI scaler The picture above (click for 1080p original) is from the 4K full frame sensor inside the Sony A7S (ISO 3200, S-LOG2). Internally the camera does a simple downscale of the 4K signal to 2K for standard 1080p XAVC or HDMI recording – but James discovered adding a hardware scaler on the end of the 4K HDMI signal results in a…

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Slashcam have chart tested the A7S internal recording modes and the results for the regular frame rates 24-30p are incredibly positive. However it seems that in 60p the camera cannot utilise the full pixel readout of the sensor, which results in a worse image with moire and aliasing. You can read my take on this below or head over to Slashcam to read the original piece (Google translated)

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