Crash! Bang! Wallop!

Frogfish
Posted 26/10/2012 - 15:31 Link
jeallen01 wrote:
Frogfish wrote:
[
It's not just the front element, there are a number of cases where the thread has been so damaged by the filter that it becomes non-viable after the broken filter has been removed.
Perversely (for you at least!) my view is that, if anything, the threads on those lenses where that happened would have been damaged anyway, and probably to a greater extent, if they had taken the full force of the impact instead of those impacts being on the external thread of the filters - since the latter is likely to spread, and thus lessen, the force on the thread on the lens behind it. !
That may well indeed be the case in some instances however there is a lot of empirical evidence to the contrary (I'm assuming the metal in the filters is softer or lower quality).
To use a (poor) analogy, seat belts save lives, but perversely they are also the cause of some car crash deaths.
http://frogfish.smugmug.com/ Pentax. Pentax DA*300/4, Cosina 55/1.2, Lens Baby Composer Pro & Edge 80, AFA x1.7, Metz 50 af1.
Nikon. D800. D600. Sigma 500/4.5, Nikon 300/2.8 VRII, Sigma 120-300/2.8, Zeiss Distagon ZF2 21/2.8, Zeiss Distagon ZF2 35/2.0, Sigma 50/1.4, Nikkor 85/1.8, Nikon TC20EIII, Nikon TC14EII, Kenko x1.4, Sigma 2.0
Edited by Frogfish: 26/10/2012 - 15:31

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