| Joined: | Fri Jul 25th, 2025 |
| Location: | Stroud Glos., United Kingdom |
| Posts: | 81 |
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There are plastics and there are plastics ... Nikon says the plastic used in the mirror box is carbon fibre reinforced.
The design has its limitations, it may reduce weight and shutter vibrations but the design is flawed, the screws holding the mount in place are short and skinny, the plastic is finely moulded and liable to break if subjected to excessive force.
Longer screws threaded into a nut imbedded deeper in the moulding would be better and spread shock forces. Better still would be a front "plate" carrying the mount which could be changed without total disassembly of the entire camera!
The magnesium casting of the D800 / 850 and D series is much more robust.
Just don't drop D810s!
The whole assembly is most likely the product of many hours of C.A.D. modelling. If Nikon went as far as defining a loading scenario i.e. what would it take to break it - then the results are only as good as the f.e. mathematical model, boundary conditions etc and the material properties
used, which is very difficult with grp due to the random orientation of the fibres. So, as you say, the bottom line is - don't drop 'em.
Last edited on Sat Aug 30th, 2025 10:12 by