Sorry guys, but it's probably not a glass prism

Started Sep 5, 2007 | Discussions thread
Sonnarman Contributing Member • Posts: 518
Re: Sorry guys, but it's probably not a glass prism

If the prism is as you suggest a porro-type David I do hope Sony have sealed it adequately. While I have nothing against mirrors per se, I have experienced major problems with another maker's 35mm SLR cameras when working in harsh atmospherics.

For example working for several months around volcanicly active landscapes, geyser or mud pool country, where not one, but three cameras' hollow mirror prism assemblies became heavily discoloured as sulphurated gases in the atmosphere gained access. No knowing how, or why, but obviously sealing of the mirror box housing was deficient.

The manufacturer quickly replaced one, then a second unit. Didn't have the heart to send the third back. Just bought no more of that unit.

XE 5 kept going throughout those years and environs without missing a beat. (Still does)

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Konica Minolta Maxxum 7D Sony SLT-A77 Fujifilm X-E2S Sony DT 16-80mm F3.5-4.5 ZA Carl Zeiss Vario-Sonnar T*
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