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30fps - use case?

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Miranda F View Drop Down
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Posts: 3715 		Post Options Post Options   Quote Miranda F Quote  Post ReplyReply Direct Link To This Post Posted: 08 February 2021 at 20:11
Surely high-definition video capability is going to squeeze out rapid still shooting as decent phone cameras squeezed out mass consumer cameras?
Video can already exceed the pixel count considered satisfactory by an older generation of DSLR shooters - maybe there is an actual use case for 30fps stills which cannot currently be met by video, but I can't see that staying for long.

I also see the trade-off between frame rate and resolution becoming unimportant when software becomes available that allows you to pick your own point in that trade-off before or after shooting, rather in the way that some video can be interlaced.
Miranda F & Sensorex, Sony A7Rii, A58, Nex-6, Dynax 4, 5, 60, 500si/600si/700si/800si, various Sony & Minolta lenses, several Tamrons, lots of MF primes and *far* too many old film cameras ...
 



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gigo View Drop Down
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Posts: 327 		Post Options Post Options   Quote gigo Quote  Post ReplyReply Direct Link To This Post Posted: 17 February 2021 at 07:35
I sold 3 bodies and 22 lenses to buy the ILCE-1. There was a huge space in my auto-drys, and I still had a lot of money to buy ILCE-1.
There is one thing to do. I was looking at the list of lenses.
Then I noticed something.

Year fps lens

2013 15 35F28Z
2013 15 55F18Z
2013 15 2870
2014 15 1635Z
2014 15 2470Z
2014 15 P28135G
2014 15 70200G
2015 15 28F20
2015 15 35F14Z
2015 15 90M28G
2015 15 24240
2016 15 70300G

2016 20 50F14Z
2016 20 50F18F
2016 20 50M28
2016 20 85F14GM

2016 30 2470GM
2017 30 85F18
2017 30 100F28GM
2017 30 1224G
2017 30 1635GM
2017 30 24105G
2017 30 70200GM
2017 30 100400GM
2018 30 24F14GM
2018 30 400F28GM
2019 30 35F18F
2019 30 135F18GM
2019 30 600F40GM
2019 30 200600G
2020 30 20F18G
2020 30 1224GM
2021 30 35F14GM
2021 30 2860

There is a clear relationship between the release year and fps.
It seems that all the lenses released in the future can be expected to be 30 fps.

And 30fps to the kit lens, can we expect that all the bodies will be 30fps someday?

Edited by gigo - 17 February 2021 at 07:39
(Now)7RIV,9,6300.., FE:13, E:4, A:8 lenses -> (Plan)1,7RIV.., FE:12, E:2, A:5
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QuietOC View Drop Down
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Posts: 3157 		Post Options Post Options   Quote QuietOC Quote  Post ReplyReply Direct Link To This Post Posted: 17 February 2021 at 11:31
Originally posted by gigo gigo wrote:

There is a clear relationship between the release year and fps.
It seems that all the lenses released in the future can be expected to be 30 fps.

And 30fps to the kit lens, can we expect that all the bodies will be 30fps someday?

Yep. just updates to E-mount to support the A9 in 2017.

Sony made a similar change to A-mount in 2011 to support 12 FPS of the A77. The A-mount lenses since then support 10 FPS on LA-EA3/5.    The older SAM/SSM lenses support 8 FPS. The one exception is the DT 18-55 SAM II.

Third-party stuff on both platforms don't have these updates. My Tamron SP 85mm F1.8 USD is one of the last A-mount AF lenses, but it uses pre-A77 tech.

E-mount bodies can shoot video at 120 (maybe 240) FPS. 30 FPS is just the current stills limit.
Sony A7III A7RII NEX-5T HVL-F45RM LA-EA3 LA-EA4r MB-IV MC-11 EF-E II TLT ROKR MD-NEX KR-NEX DA-NEX
Minolta Maxxum 600si
Pentax Q7 5-15 15-45/2.8 8.5/1.9 11.5/9 AF-P/Q
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QuietOC View Drop Down
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Posts: 3157 		Post Options Post Options   Quote QuietOC Quote  Post ReplyReply Direct Link To This Post Posted: 17 February 2021 at 11:41
Entropy512 who is a user here and on other forums has analyzed some of the E-mount stuff:

And I know Jim has measured a 120 or 240 Hz electrical current consumption pattern from the A9. I forget what the current consumption pattern was on other bodies he measured. I don't believe he's measured an A7M3?

Side note: The E-mount lens command and control loop operates at 60 Hz, but newer lenses/bodies support a new asynchronous command set that is not tied to the 60 Hz BODY_VD_LENS pulse rate. I've seen these new commands on the SEL24105G and A7M3 - someone else guessed this command set is related to native 20 FPS capability (vs. lenses that only do native 15). Whether this is actually the case is TBD.
Sony A7III A7RII NEX-5T HVL-F45RM LA-EA3 LA-EA4r MB-IV MC-11 EF-E II TLT ROKR MD-NEX KR-NEX DA-NEX
Minolta Maxxum 600si
Pentax Q7 5-15 15-45/2.8 8.5/1.9 11.5/9 AF-P/Q
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