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c0r3y.aF
9th of September 2009 (Wed), 10:50
I've been wanting to shoot paintball for a while now, but I've been afraid of taking a direct hit to the lens and ruining it. I'm 18 with a low-paying job and can't afford to buy new glass, so it's risky for me.

My father owns two old Minolta film SLRs that he no longer uses and I decided to take one of the lenses for a test run, but not by taking pictures... I wanted to test the strength of the lens to see if it would hold up to a direct hit.

Figured I'd share since this is both paintball-related and photography-related.



Before:

http://farm4.static.flickr.com/3534/3903308365_8e2d19c5a2.jpg
The lens: An old Minolta 50mm prime, no scratches or anything, just a little old and dusty.

http://farm4.static.flickr.com/3503/3904090764_65b1a551be.jpg
The gun: A G3 shooting at 300fps, the same speed most fields shoot at. The shot was taken at a distance of 15-20ft.

http://farm3.static.flickr.com/2605/3903311087_3371abb1b1.jpg
The placement: Stuck it in a little notch on a tree stump, holds nicely. I've tested filters there as well which is why there's paint on it already.



After:

http://farm4.static.flickr.com/3429/3903311903_f4013af7ae.jpg
As you can see, the lens took a direct hit, with no cracks or breaks. The front element held up perfectly.

http://farm4.static.flickr.com/3527/3903312773_44ff8cfe91.jpg
After washing (all I did was run it under water in the sink, it won't ever be used again so why not) you can see that there are no cracks, just a smear from my terrible cleaning job. It's simply oils from the paint and water that can be smeared around with your finger and can be cleaned off.

http://farm3.static.flickr.com/2625/3904094006_31a3bec142.jpg



tl;dr: A hit to the filter will make it basically explode, scratching your lens, but a hit to the bare lens at 15-20ft at 300fps will most likely not do any damage at all to the lens.

RickyH
10th of September 2009 (Thu), 01:01
As soon as I read you're intro, I knew this should be interesting.

c0r3y.aF
10th of September 2009 (Thu), 09:42
Haha, I was hoping it would grab someone's attention. Now I just need to see how the strength of that old prime compares to today's zooms.

pwm2
10th of September 2009 (Thu), 09:49
Is next test with a 55-250? :p

c0r3y.aF
10th of September 2009 (Thu), 19:57
Haha, not with mine! I'll have to find something to use

verymagicalguy
11th of September 2009 (Fri), 05:56
Pretty cool. I've seen that the 50 f/1.8 are pretty durable as well.

BenJohnson
11th of September 2009 (Fri), 13:16
Is next test with a 55-250? :p
Here's my 55-250 after taking a direct hit!

http://benjohnson.smugmug.com/photos/470770138_BaaDt-M.jpg

J.Napier
12th of September 2009 (Sat), 16:38
Im going out right now and going to test my 200 1.8. Be right back...

Anke
12th of September 2009 (Sat), 16:48
Interesting test :D

pwm2
12th of September 2009 (Sat), 17:04
For people feeling an urge to test their lenses: Make sure the front element is convex. A flat front element - or a filter - will have a much harder time handling the impact.

c0r3y.aF
12th of September 2009 (Sat), 21:57
For people feeling an urge to test their lenses: Make sure the front element is convex. A flat front element - or a filter - will have a much harder time handling the impact.
How/where can you go to tell if your lens is convex, or how thick the glass is? I have no idea what my 55-250 is like on the inside.

c0r3y.aF
12th of September 2009 (Sat), 21:57
Here's my 55-250 after taking a direct hit!

http://benjohnson.smugmug.com/photos/470770138_BaaDt-M.jpg
Survived? Sweet. How far was the person that shot you/what was the velocity?