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|| SportsShooter.com: Member Message Board
Mark IV framerate issue
James Brosher, Photographer
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Cheyenne | WY | United States | Posted: 11:30 AM on 02.15.11 |
->> I'm having a peculiar issue with my Mark IV, and I'm curious if anyone else is experiencing the same issue.
When I'm shooting sports (mainly basketball) and attempt to motor through a dunk/layup, the framerate seems to decrease randomly from 10 fps to about 4 fps. I'm not maxing out the buffer and I'm shooting JPEG. It seems to happen about 3 or 4 frames into a burst. |
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John Korduner, Photographer
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Baton Rouge | LA | United States | Posted: 11:42 AM on 02.15.11 |
| ->> Is your camera function setting motor drive priority or AF priority? If it's set to AF, it will wait until focus locks. |
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Rick Osentoski, Photographer
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Martin | OH | United States | Posted: 11:42 AM on 02.15.11 |
| ->> There are a number of reason for this. The camera may have lost focus do to your settings for tracking and sensitivity it is also dependent on your shutter speed a lower speed will effect the frame rate slowing it down. |
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James Brosher, Photographer
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Cheyenne | WY | United States | Posted: 11:46 AM on 02.15.11 |
| ->> John: I've got it on AF priority/Tracking priority. Rick: when it last occurred, I was shooting 1/100 sec. on manual. |
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Rick Osentoski, Photographer
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Martin | OH | United States | Posted: 12:29 PM on 02.15.11 |
| ->> 1/100 Sec is going to slow it down also look at your sensitivity setting should try setting it to low. |
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James Brosher, Photographer
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Cheyenne | WY | United States | Posted: 12:35 PM on 02.15.11 |
| ->> Sorry I meant 1/1000th |
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Al Goldis, Photographer
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East Lansing | MI | USA | Posted: 1:49 PM on 02.15.11 |
->> Your current settings give priority to AF at the expense of drive speed. If the camera is having trouble maintaining focus (because it's dark and/or your players are wearing dark uniforms) then it will slow down the drive to make sure everything is in focus. That's the theory at least.
You can set the camera to drive priority and you will be guaranteed to get 10fps but they probably will not all be sharp. |
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Jim Pierce, Photographer
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Waltham | MA | USA | Posted: 9:17 PM on 02.15.11 |
->> James,
I believe I had the same problem a month or two after I bought my new Mark IV. Did not matter what mode, what sport, day or night, light dark uniforms.... when I did a burst you could hear the change of speed in the shutter.
I brought it back to the place of purchase, who also reproduced it, they sent it back to Canon who replaced 3-5 different items. Don't exactly remember and can't find the report but a couple Boards and sensors of some sort.
No issues since.
Hope this helps.
Jim |
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James Brosher, Photographer
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Cheyenne | WY | United States | Posted: 12:07 PM on 02.18.11 |
| ->> I've tried changing to drive priority, but it still continues to do the same thing as before. Looks like I need to send it into CPS. |
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Michael Ivanin, Photographer
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Oakville | On | Canada | Posted: 2:02 PM on 02.18.11 |
| ->> Did you check your noise reduction camera settings if they set to high it might affect your frame rate. |
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Svein Ove Ekornesvaag, Photographer
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Aalesund | Møre og Romsdal | Norway | Posted: 3:49 PM on 02.18.11 |
| ->> do you have any accessories connected to the camera? |
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Jack Howard, Photographer, Photo Editor
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Central Jersey | NJ | USA | Posted: 4:15 PM on 02.18.11 |
->> Noise reduction, shadow openers/highlight priority, d-range optimizers, lens correction settings, focus-priority (especially when the shutter button is also the AF activator), can all contribute to slowdowns. As can higher ISOs, especially in conjunction with any specialized in-camera image cooking to RAW or JPEG files.
Rule out all these issues by elimination testing: Switch to manual focus, native ISO, no image quality settings on, and if the problem persists, switch cards and try again.
But I'd be willing to reckon it's a camera setting slow-down here... |
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John Berry, Photographer
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Madison | VA | USA | Posted: 7:25 PM on 02.18.11 |
| ->> I've owned all the 1 series cameras and they all seem to have done the slow down thing when tracking with AF....doesn't matter whether I have the priority set to AF or drive, same results. I've just gotten used to it. Only way around it for me has been manual focus. |
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Israel Shirk, Photographer, Assistant
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Boise | ID | US | Posted: 3:00 AM on 02.19.11 |
->> I've also found noise reduction to do that.
Post a complete list of your custom function settings and it'll make it easier to tell if it's one of them. |
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James Brosher, Photographer
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Cheyenne | WY | United States | Posted: 6:04 PM on 02.20.11 |
->> Here are my settings:
I-Exposure
1-0
2-0
3-Enable
4-0
5-0
6-0
7-1
8-2
9-Disable
10-Enable
11-0
12-Disable
13-Disable
14-Disable
15-0
16-0
17-0
II-Image/Flash exp/Disp
1-0
2-0
3-0
4-0
5-0
6-1
7-0
8-1
9-0
10-0
III-Autofocus/Drive
1-0
2-Fast
3-0
4-1
5-1
6-0
7-0
8-2
9-1
10-0
11-1
12-0
13-0
14-1
15-1
16-1
17-0
18-Disable
19-Disable
IV-Operations/Other
1-2
2-1
3-0
4-0
5-0
6-0
7-0
8-0
9-0
10-0
11-1
12-0
13-Disable
14-1
15-0
16-0 |
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