Right now if you want faster shooting from Sony, you’ll need to go for one of their smaller formats, whether APSC or 1in.That’s enough talk, now it’s time to see how the quality of the A7s Mark II’s footage measures-up and what better camera to compare it against than the A7r Mark II. Reviewed Sony Alpha 7S II records 4K internally, shoots up to ISO 409,600We are retrieving offers for your location, please refresh the page to see the prices.
So I took the chance to compare the AF performance of the A7s II and A7r II side-by-side under a variety of conditions.To put it to the test I fitted a freshly-formatted UHS-3 card, set the shutter and sensitivity to 1/500 and 400 ISO, then fired-off a series of bursts. So it inherits the upgraded viewfinder, built-in stabilisation, chunkier grip and repositioned controls last seen on the A7r Mark II; indeed place them side by side and they look physically identical other than their model names.Set the camera to AVCHD and you can film 1080 in 24p (at 17 or 24Mbit/s), in 60i (at 17 or 24Mbit/s), or 60p (at 28Mbit/s). The A7s II, due to its 12 Megapixel sensor, can only film 4k with the full-frame coverage – there is no crop option for 4k as there’s simply insufficient pixels.
I then filmed the same view using the A7r Mark II’s APS-C / Super-35 mode which takes a crop from the middle of the frame with a 1.5x field-reduction, then scales it down a little to deliver a 4k frame; the field reduction meant I needed to zoom the lens wider to match the field of view with the A7s Mark II’s full-frame capture. It’s the last shot in a series of ten images that covered about five seconds of action. It was only when the light was reduced to levels that required 51200 ISO or faster to achieve 1/30 at f1.8 that the A7r II became noticeably less confident, or unable to autofocus at all.These three profiles deliver flat footage ideal for grading and I’m pleased to report the minimum sensitivity has been reduced from 3200 ISO on the original A7s to 1600 ISO on the Mark II – making them easier to use in bright light, although you’ll still need an ND for motion-friendly shutter speeds. Dec 26, 2017
Announced in September 2015, it’s the successor to the original Alpha A7s and becomes the sixth full-frame mirrorless camera from Sony.So to sum-up, the A7s Mark II’s AF system is respectably quick in Single AF and happy to keep focusing, albeit slowly, in very dim conditions – dimmer than the A7r Mark II can manage. Oct 6, 2015
18 sample photos
Shedding some light on the sources of noise
Or maybe Sony could have just designed a 9.8 Megapixel sensor instead which was 3840 pixels wide to start with.It only takes a minor bump to 3200 ISO though to see a faint sprinkling of noise become visible on the A7r II clips, while the A7s II remains clean. The FS5 offers one stereo internal mic (on the removable top handle) and two XLR Jacks (one on the removable top handle and a second one on the camera’s body). In Camera book - perfect photos out-of-cameraDespite being able to autofocus in very dim conditions, the A7s II’s contrast-based system is (like others that share this technology) most at home with static subjects. 6 sample videos
As it stands, under bright conditions at low to mid ISOs they look very similar.PS – the video lasts for just under 50 minutes so you may want to make yourself a drink – and if you find my reviews useful you can support my work by treating me to a coffee – cheers!I evaluated these clips on a native 4k display and found them to look pretty similar at the starting point of 1600 ISO – although as with my outdoor resolution test, I found the A7r II APSC clip looked slightly more sharpened, while the A7r II full-frame clip looked a little softer. Interestingly though, like its predecessor, the 4k UHD frame is generated from the full sensor width which means 4240 pixels have to be scaled-down to 3840 pixels. I filmed a lot of my sample movies in both S-Log3 and with no profiles allowing you to compare the quality and try grading some footage yourself.Above: Sony A7s II vs Sony A7r II (APSC) vs Sony A7r II (full-frame) – 4k daylight resolution at 100 ISO.That’s as far as the A7r II’s sensitivity can go, but the A7s II allows you to keep filming right up to the maximum of 409600 ISO. Go with the glow: How to effectively use Orton Layers in post processing
This time all the clips were filmed in 24p at sensitivities starting at 1600 ISO and going up to the maximum values: 25600 ISO on the A7r Mark II and 409600 ISO on the A7s Mark II.
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