Sony announces a9 24MP 20fps high-end full frame sports camera
- Thread starter joe1946
- Start date
joe1946
Veteran
It looks like the small body is keeping the video specs down compared to the 4K 60p GH5.
https://www.bhphotovideo.com/c/product/1283257-REG/panasonic_dmc_gh5_mirrorless_micro_four.html
David_Manning
Active member
Looks very nice, actually. I like my A7RII and this can be more of the same. Too bad they can't build it with different mounts, to avoid clumsy bulky adapters.
My ONLY worry...overheating ��
My ONLY worry...overheating ��
David_Manning
Active member
I wonder if the AF will work well in video mode...with the additional AF sites, could be really nice. The A7RII is pretty damn good with the Sony lenses (much better than the same lenses on the FS5), but the A9 might allow more off-centered framing.
Reality Studio
Member
Shame they still haven't figure out how to make an articulating display for solo filming use 
Maybe they are saving that for the more video centric A7SIII.
Maybe they are saving that for the more video centric A7SIII.
filmguy123
Veteran
Interesting that a m43 camera is larger than the FF.
Does this mean we can expect a new naming convention? Sony A9 = A7R III basically? And so perhaps Sony A9S will be the equivalent to what would have been an A7S III?
Look forward to seeing what they do on the video side, whenever they finally announce that. Hopefully worth the wait.
Does this mean we can expect a new naming convention? Sony A9 = A7R III basically? And so perhaps Sony A9S will be the equivalent to what would have been an A7S III?
Look forward to seeing what they do on the video side, whenever they finally announce that. Hopefully worth the wait.
Ever seen RX1?
Samuel H
Major Contributor
I think yesterday's presentation was all about stills, and we'll hear about the video side of the a9 at NAB.
My expectations:
- Global shutter: if the thing can do 20 fps stills with electronic shutter, it either is global shutter, or a really, really, really fast rolling shutter (<10ms), which would be basically the same.
- No overheating: I'm guessing this is the reason it's 3mm thicker than the a7 bodies. They needed this for 20fps unlimited full-res stills.
- Better DR than the a7 series: it will still be slog3, but this time with the same DR of the FS7, which means an improvement of between 1 and 2 stops. I think the original a7S was doing 12-bit readout from the sensor in order to achieve video fps, but I haven't read anything about reduced readout bit depth when shooting 20 fps full-res RAW stills on the a9, so it's hopefully still a 14-bit readout for video.
Still not good enough for me at this price, though. At $3k, I may have gone for it because of the improved DR (if it turns out it's actually there), but for this price *I* would need both that AND 4k 60 fps.
My expectations:
- Global shutter: if the thing can do 20 fps stills with electronic shutter, it either is global shutter, or a really, really, really fast rolling shutter (<10ms), which would be basically the same.
- No overheating: I'm guessing this is the reason it's 3mm thicker than the a7 bodies. They needed this for 20fps unlimited full-res stills.
- Better DR than the a7 series: it will still be slog3, but this time with the same DR of the FS7, which means an improvement of between 1 and 2 stops. I think the original a7S was doing 12-bit readout from the sensor in order to achieve video fps, but I haven't read anything about reduced readout bit depth when shooting 20 fps full-res RAW stills on the a9, so it's hopefully still a 14-bit readout for video.
Still not good enough for me at this price, though. At $3k, I may have gone for it because of the improved DR (if it turns out it's actually there), but for this price *I* would need both that AND 4k 60 fps.
It will most likely have the exact same rolling shutter as the a6300/6500 as it too has a 30p crop. (That crop is because the rs is too slow for 30p but not for 25p). The RX10ii with a 14fps electronic shutter can't do 4k without RS too.
Samuel H
Major Contributor
Well, this one is doing 20fps electronic shutter stills, which must be either global shutter or incredibly fast rolling shutter (5ms or less), otherwise photogs wouldn't take it seriuosly. But you may be right: NAB has started, and I'm worried that we haven't heard anything about this yet.
Samuel H
Major Contributor
Tony Northrup has been playing with the a9, in stills mode. He found no IQ difference in mechanical vs electronic shutter in terms of: dynamic range, noise when shooting ISO 25600, and rolling shutter. Not sure if he is shooting 20 fps or not, but it sounds like global shutter (or very, very fast rolling shutter) with 14-bit ADCs. Prevous a7 models couldn't do this: they switched to 12-bit ADCs when using e-shutter.
https://twitter.com/lucaravaglia/status/856145134144167936
No idea why people at NAB haven't commented much on a9 video rolling or global shutter, or even just slog3 (there's some noise regarding whether it's there or not).
https://twitter.com/lucaravaglia/status/856145134144167936
No idea why people at NAB haven't commented much on a9 video rolling or global shutter, or even just slog3 (there's some noise regarding whether it's there or not).
Maybe it's just me... but this year's NAB seems to be a big yawn thus far...
Samuel H
Major Contributor
Not just you. What I don't get is why we don't get answers about the (few) products that were released, like the a9 in this case. It seems the reps at NAB either don't know the answers, or have been instructed not to give them (particularly regarding slog3: I know people who have asked, it doesn't seem like they got an answer).
