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FORUMS Sony Cameras, Lenses & Accessories Sony Cameras 
Thread started 19 Apr 2017 (Wednesday) 10:51
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Sony A9 Announced

 
nekrosoft13
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Apr 27, 2017 12:26 |  #196
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AND AGAIN

20FPS WITH TRACKING AUTOFOCUS

https://www.youtube.co​m/watch?v=QEHbKghfgtY (external link)


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idkdc
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Apr 27, 2017 12:28 as a reply to  @ post 18340134 |  #197

Can you link the dpreview article to dispel any "doubts?"


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Charlie
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Apr 27, 2017 12:31 |  #198

nekrosoft13 wrote in post #18340125 (external link)
I don't know what Tony is blabbing about... but it's been shown time and time again, does it does autofocus 60 times a second during 20fps burst.

20fps with autofocus
https://www.youtube.co​m/watch?v=QEHbKghfgtY (external link)

another video https://www.youtube.co​m/watch?v=1K5llXDe7BI (external link)

the first clip might not have been a full 20fps, I think it slows down if you rewatch the video. 3 seconds, the counter went from 4606 to 4563. THat's 43 frames or around 14fps while tracking. Certainly isnt bad, but it does slow down. I'm guessing if you had more time with it and tweaked the AF to be on shutter priority rather than lock, then you can get 20fps (just a guess).


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nekrosoft13
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Apr 27, 2017 12:33 |  #199
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Charlie wrote in post #18340139 (external link)
the first clip might not have been a full 20fps, I think it slows down if you rewatch the video. 3 seconds, the counter went from 4606 to 4563. THat's 43 frames or around 14fps while tracking. Certainly isnt bad, but it does slow down. I'm guessing if you had more time with it and tweaked the AF to be on shutter priority rather than lock, then you can get 20fps (just a guess).

first link shows high speed continuous on screen, so yes it was 20fps


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Apr 27, 2017 12:40 |  #200

idkdc wrote in post #18340137 (external link)
Can you link the dpreview article to dispel any "doubts?"


nekrosoft13 posted the link to that DP Review article, which mentions the 12-bit data when in continuous electronic mode


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Apr 27, 2017 13:30 |  #201




banding still present.

af looks decent in video, odd omission of 4k 60p, prob has to do with lack of xqd. grip is too small with gmaster lenses for medium sized hands.


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nekrosoft13
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Apr 28, 2017 13:12 |  #202
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Interesting read...

https://www.dpreview.c​om/forums/thread/41476​06 (external link)

the loud shutter (on Nikon) reactions are great...


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Apr 29, 2017 11:02 |  #203

Did I hear correctly...Tony say 4500 shots for Chelsea and over 6000 shots for him with 1 battery?




  
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Charlie
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Apr 29, 2017 12:40 |  #204

rxjohn wrote in post #18341829 (external link)
Did I hear correctly...Tony say 4500 shots for Chelsea and over 6000 shots for him with 1 battery?

yep, colby fella on youtube said 4500 in his testing too


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Apr 29, 2017 17:54 |  #205

Wilt wrote in post #18340103 (external link)
Per DPReview, the A9 does indeed (like the A7RII) drop into 12-bit data mode 'during continuous electonic modes (anything above 5 fps)'

And per a second Tony Northrup video

  • 20fps is achieved only when 'not focusing'; while focus updating, in the range of only 10-15fps is possible
  • buffer fills up with about 220 compressed RAW shots, or about 113 uncompressed RAW, then take about 2 minutes to clear the buffer, which restricts camera functions during clearing
  • evidence of 'rolling shutter' is largely gone (not quite completely) for still images, but video shooters still noticed rolling shutter effects, though greatly reduced from A7SII.

Tony is chatting rubbish.

The buffer clears in 32seconds

https://www.youtube.co​m/watch?v=Ztcf_6sp-Kg&t=383s (external link)


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Apr 29, 2017 21:32 |  #206
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jonneymendoza wrote in post #18342135 (external link)
Tony is chatting rubbish.

The buffer clears in 32seconds

https://www.youtube.co​m/watch?v=Ztcf_6sp-Kg&t=383s (external link)

yes he does, his whole video is bs.


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Apr 30, 2017 05:37 |  #207

jonneymendoza wrote in post #18342135 (external link)
Tony is chatting rubbish.

The buffer clears in 32seconds

https://www.youtube.co​m/watch?v=Ztcf_6sp-Kg&t=383s (external link)

I wish proper testing was done before these videos are published but in this age of click bait and wanting to get content out as soon as possible, proper testing to make sure information is accurate is often skipped.

This whole claim that it takes 2 minutes to clear gets misquoted by detractors of Sony. Any user forum now discredits the a9 by anti Sony people taking what they heard and even exaggerating on it, saying stuff like "fail, it takes 4 minutes to clear". Or when they compare JPEG pre production firmware images to processed mature camera and say "look at ISO 4000, it's terrible" or "my $1,500 D750 beats the pants off of even a D5 in terms of ISO performance".


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jonneymendoza
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Apr 30, 2017 05:48 |  #208

check it out

https://www.youtube.co​m/watch?v=9TmcSHy41kE (external link)


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Apr 30, 2017 13:43 |  #209

ie Tony CYA because he still had two cards in when he made the 2 minute claim. :)

Anyway, all is well that ends well. Good of him to publish the correction.


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Post edited over 2 years ago by Wilt. (4 edits in all)
     
Apr 30, 2017 13:59 |  #210

TMaG82 wrote in post #18342442 (external link)
This whole claim that it takes 2 minutes to clear gets misquoted by detractors of Sony.

One is not necessarily a 'detractor' when one is merely restating what was reported on the web from an apparently reliable source. I was not trying to defame the A9, I am in fact very interested in the A9 as a game changer, and want to see reports which have the merit of full study and not a rushed 'first impression'. ALL information is subject to change when only initial trial copies of any not-yet-released product are evaluated, and not the 'first production run' evaluations.

As Tony surmises, having a fast and a slow SD and parallel RAW and JPG storage of each shot constrains the write time performance to how long the SLOWEST storage device performs.
When the test reports get published, we will see the best and worst scenarios both revealed under a combination of test circumstances. For now, ALL statements should be well seasoned with the grain of salt, whether the overly optimistic Pro or the overly pessimistic Con.


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Sony A9 Announced
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