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Thread started 08 Jul 2017 (Saturday) 13:24
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7D Mark III and 90D in early 2018?

 
Wilt
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Nov 22, 2017 14:28 as a reply to  @ post 18502088 |  #46

Well, timing and skill and practice certainly can help, but with 132-158" of ball travel between two consecutive frames (at 10fps and 12fps) is indicative that it is far more than simply frame rate!


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Nov 22, 2017 15:09 |  #47

I don't shoot a lot of these. Hoping to get out again. My buddies old timers league.

Warm up


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Nov 22, 2017 15:11 |  #48

More warm up


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Nov 22, 2017 15:13 |  #49

In the back the net. Second shot. Gotta protect the boys..


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Nov 22, 2017 15:13 |  #50

Wilt wrote in post #18501902 (external link)
Capturing the ball in flight at one point vs. another is nevertheless mostly fortuitous coincidence, whether at 10 fps for 12 fps!
Assuming a pitcher throws at 90mph, the ball is moving 132fps or 1584 inches per second.

  • So at 10 fps, the ball moves 158 inches between successive frames,
  • while at 12 fps the ball moves 132 inches between successive frames!


...so catching the ball at the bat or at the catcher's glove is mostly luck!

for me probably luck.. i don't shoot sports ..

but for those that do shoot sports on a regular basis.. I'm sure there are techniques to increase probability .. as having more fps increases probability .. so i think for a seasoned sports shooter its mostly skill and equipment


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Nov 22, 2017 15:15 |  #51

I never tried to crop this before


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Nov 22, 2017 15:19 |  #52

I had a lot of fun. Looking threw these and looking forward to the next outing.

Puck drop


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Bassat
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Nov 22, 2017 15:22 |  #53

Wilt wrote in post #18501902 (external link)
Capturing the ball in flight at one point vs. another is nevertheless mostly fortuitous coincidence, whether at 10 fps for 12 fps!
Assuming a pitcher throws at 90mph, the ball is moving 132fps or 1584 inches per second.

  • So at 10 fps, the ball moves 158 inches between successive frames,
  • while at 12 fps the ball moves 132 inches between successive frames!


...so catching the ball at the bat or at the catcher's glove is mostly luck!

1584"/s * s/60frames gets me a frame every 26.4 inches out of my 80D. I'll get some video of my next Cubs game and see how it comes out. Assuming a 65" tall batting stance, I'll have about 97" of frame width. That should get me 3 frames with the ball in the frame for every pitch. Curious, I've never tried video at the ball park.




  
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Nov 22, 2017 15:52 as a reply to  @ Bassat's post |  #54

Not sure what you calculated.

The 80D has up to 7 frames/sec...so the sensor acquires a new frame each 1/7 sec.
If the baseball travels 1584" per second. between frames the ball has moved 226.28"

If you took a video at 24 frames/sec, the ball moves 66" between frames.

Extrapolating, at 240 frames/sec., the ball movement is reduced to 6.6" between frames, so any 'perfection' in capture of bat hitting ball or ball hitting glove is still prone to be 6" out of position.

If one is striving only to 'get the ball in the frame' (and not trying to get the ball touching the glove/bat) and the frame indeed is 97" wide, the chance of capturing a ball travelling 90mph within the 10-12 fps frame is is still 60-75% of the time


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Nov 22, 2017 16:21 |  #55

Wilt wrote in post #18502159 (external link)
Not sure what you calculated.

The 80D has up to 7 frames/sec...so the sensor acquires a new frame each 1/7 sec.
If the baseball travels 1584" per second. between frames the ball has moved 226.28"

If you took a video at 24 frames/sec, the ball moves 66" between frames.

Extrapolating, at 240 frames/sec., the ball movement is reduced to 6.6" between frames, so any 'perfection' in capture of bat hitting ball or ball hitting glove is still prone to be 6" out of position.

If one is striving only to 'get the ball in the frame' (and not trying to get the ball touching the glove/bat) and the frame indeed is 97" wide, the chance of capturing a ball travelling 90mph within the 10-12 fps frame is is still 60-75% of the time


Bassat wrote in post #18502145 (external link)
1584"/s * s/60frames gets me a frame every 26.4 inches out of my 80D. I'll get some video of my next Cubs game and see how it comes out. Assuming a 65" tall batting stance, I'll have about 97" of frame width. That should get me 3 frames with the ball in the frame for every pitch. Curious, I've never tried video at the ball park.

I stated video at 60fps. I'm not sure what kind of IQ I'll get pulling frames from 60fps video. Cubs don't play until April so I've got plenty of time.




  
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Wilt
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Nov 22, 2017 16:26 as a reply to  @ Bassat's post |  #56

OK, understood.

30 fps at 1594"/sec means ball moves 52.8" between frames. So a single frame has 54% chance of having the baseball within the width of the frame when the camera is holding the batter stationary within the frame.


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Bassat
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Nov 22, 2017 16:49 |  #57

Wilt wrote in post #18502189 (external link)
OK, understood.

30 fps at 1594"/sec means ball moves 52.8" between frames. So a single frame has 54% chance of having the baseball within the width of the frame when the camera is holding the batter stationary within the frame.

Understood? Curious. I'd like a puff or two of whatever you are smoking today. :) 60fps should yield the numbers I posted.

(OK, OK! I did edit the numbers almost immediately after posting. You probably saw the first edition.)




  
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Wilt
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Nov 22, 2017 16:56 as a reply to  @ Bassat's post |  #58

OK, you changed 30 fps to 60 fps...NOW (I think) I understand

1594/60 = 26.4" lateral change of position between frames


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Nov 22, 2017 22:49 |  #59

The shots I posted where with the 7D2 - 12,000 ISO at 8 FPS. Next time I'm going to try my 5D4 for better IQ.


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Nov 24, 2017 16:07 |  #60

Wilt wrote in post #18501902 (external link)
Capturing the ball in flight at one point vs. another is nevertheless mostly fortuitous coincidence, whether at 10 fps for 12 fps!
Assuming a pitcher throws at 90mph, the ball is moving 132fps or 1584 inches per second.

  • So at 10 fps, the ball moves 158 inches between successive frames,
  • while at 12 fps the ball moves 132 inches between successive frames!


...so catching the ball at the bat or at the catcher's glove is mostly luck!

What you’ve just illustrated is that, even with the the most advanced camera and the best lenses, you still have to know where to point it and when to shoot. The ability to do that consistently is called experience, not luck.

Mike


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7D Mark III and 90D in early 2018?
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