Roller Derby – A Photographer’s Statistics

Some of you know I’m one of the regular photographers at the London RollerGirls Roller Derby league – and this weekend was the Anarchy in the UK tournament, the first WFTDA sanctioned event outside of North America, I thought I’d resurect the blog with a little post about stats…(You may now want to turn away if this sort of thing doesn’t interest you!)

Somebody at Anarchy in the UK asked me how many shots I’d take over the weekend, and as I had no idea off the top of my head, I promised I’d look it up. Several people in the past have asked what percentage of shots get used/deleted, so for any stat freaks out there, here’s the lowdown (Note: this applies to me only, the other photographers will all have different shooting styles and so different stats)

Equipment used :
Nikon D700 DSLR with Nikon 70-200 f/2.8 VR, occasionally a Nikon 35mm f/2
Used high speed Sandisk and Transcend 8GB CF cards, one per half bout.

Backup Equipment: (not used) Nikon D300 DSLR with Nikon 24mm, f/2.8 (effective focal length ~36mm)
Mounted on a Manfrotto 776YB monopod with an ancient Manfrotto 210B Ball head
(You may ask “Where’s the 50mm f/1.8?” -well, actually, mine’s a 50mm f/1.4 G and I forgot it!)

I shoot with spot focus and either spot meter or centre-weighted average at ISO 3200 at f/2.8, unless I’m using flash when I put it down to ISO 400 and the apature up to f/5.6 or f/8.

Saturday:
Arrived 11:30am, entered hall 11:50am, left approx 20:15pm Did not attend afterparty due to hurty knee and shitloads of photos to download/backup

Day total: 944 14-bit Nikon NEF image files

Bout 1: London Brawling vs Montreal New Skids on the Block:
407 images (43% of day’s kept images, 34% of all shutter actuations for day)
503 images shot total, 96 deleted in-camera)
– Note that this includes initial warm-up shots, incidentals, etc, so is higher than you might guess
6 posted to Flickr, 170 posted to Facebook

Bout 2: Steel City vs Charm City:
240 images (25% of day’s kept images, 20.3% of all shutter actuations for day)
312 images shot total, 72 deleted in-camera)
6 posted to Flickr, 160 posted to Facebook

Bout 3: Montreal New Skids on the Block vs Steel City:
297 images (31% of day’s kept images, 20.1% of all shutter actuations for day)
367 images shot, 70 deleted in-camera
6 posted to Flickr, 192 posted to Facebook

Day total deleted in-camera : 238 images (20.13%)
Day total shutter actuations for day therefore : 1182

Sunday:
Arrived approx 10:30am, entered hall 10:35am, left around 19:25pm Did not attend afterparty due to painkillers taken for knee, and wanting to get home (which thanks to London Midland hacking their train service off, the scumbags, wasn’t until after 11:30pm)

Day total: 740 images

Bout 4: London Brawling vs Charm City:
283 images (38.24% of day’s kept images, 29.1% of all shutter actuations for day)
372 images shot, 89 deleted in-camera
6 posted to Flickr, 159 posted to Facebook

Bout 5: Charm City vs Montreal New Skids on the Block:
225 images (30.45% of day’s kept images, 23.17% of all shutter actuations for day)
313 images shot, 81 deleted in-camera
6 posted to Flickr, 133 posted to Facebook

Bout 6: London Brawling vs Steel City:
232 images(31.35% of day’s kept images, 23.89% of all shutter actuations for day)
293 images shot, 61 deleted in-camera
6 posted to Flickr, 163 posted to Facebook

Day total deleted in-camera:231 (23,78%)
Day total shutter actuations for day:971

Weekend total:
1684, 469 deleted, total shutter actuations therefore 2153

Of which:
32 (favourite 6 from each bout) were posted to Flickr (1.90% of total kept, 1.48% of total shutter actuations, all posted Monday 11th)
977 Bout photos + 116 other (Refs/NSOs/Announcers/Crowd shots, etc) posted to Facebook in 8 Albums (Most on Monday 11th, the rest mornong of Tuesday 12th)
(64.9% of kept images, 50.76% of all taken)

Data gained from EXIF info on raw images.

For the record, My Nikon D700 has now clocked 50,389 shutter actuations since I first bought it on 18/01/2009, i.e. 814 days, or 2 years, 2 months and 25 days ago. That’s an average of 61.9 images/day!

NB: There’s probably some rather gross inconsistencies, as I’ve knocked this up without checking it properly, so if you see any, please let me know. Feedback is appreciated if you find this useful, feel free to ask questions.

One Response to Roller Derby – A Photographer’s Statistics

  1. I took 760 (maybe deleted 10 in camera?) and posted 95 to both facebook and flickr. I always aim for at least a 10% yield, and the more I take the more I’m likely to get out of it, probably because I shoot jpg.

    Remember how I said I thought the light was ok in ExCeL? I think I messed up my white balance setting by choosing the wrong one, the photos were all a bit dark straight off the camera but they brightened up quite well, if rather noisy. I’m pleased with them anyway, and if I went through them again could probably get a few more out of it.

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