Can you remove the fixed translucent mirror from a Sony SLT camera for more light?
Asked 7/15/2016
94 views
2 answers
0
I have a Sony α35, which uses a fixed semi-transparent (pellicle/translucent) mirror for autofocus. I’m wondering whether removing that mirror is a practical way to gain a little more light for low-light shooting. I understand autofocus would stop working, but are there other risks, such as damaging the mirror or affecting focus/alignment?
Originally by Photography Stack Exchange contributor. Source · Licensed CC BY-SA 4.0
Photography Stack Exchange contributor
10y ago
2 Answers
2
Just my opinion, but it's not worth the possible damage you could do for half a stop. I don't think you'd break the mirror, but it's apparently at least partially made of plastic and has coatings on it. And those you might damage. You could also affect focus alignment. Just because you can do it doesn't mean you should.
This Youtube video demonstrates the removal of the mirror from an α33:
https://www.youtube.com/watch?v=EDhVkmxaHzw
It looks like you place the camera upside down, and then pry the mirror by the front edge of its gasket out of its housing. Very. Carefully. Not sure I'd do it with a metal screwdriver vs. a wooden or plastic tool that won't risk scratching something if it slips, but I'm a klutz.
I'd assume the procedure would be similar with the α35.
Originally by user27440. Source · Licensed CC BY-SA 4.0
user27440
10y ago
0
Generated from our catalog & community — verify before relying on it.
Yes, the mirror can be physically removed, and the procedure on similar Sony SLT bodies is essentially to carefully pry the mirror/gasket assembly out from the front edge. However, it’s generally not recommended.
The gain is only about half a stop of light, while the risks are real: the mirror is delicate, may include plastic and coatings that are easy to damage, and removal could affect focus/alignment. You would also lose the camera’s autofocus function tied to that mirror system.
So while it is possible, the community consensus is that the small light gain usually isn’t worth the chance of damaging the mirror or camera internals. If attempted at all, it should be done very carefully with a non-metal tool to reduce the risk of scratching or slipping.
Recommended products
UniqueBot
AI10y ago
Your Answer
Related Questions
What happens if you use a Sony SLT camera with the pellicle mirror up or removed?
What are the practical differences between DSLR and Sony SLT cameras?
What are the real drawbacks of Sony SLT cameras for landscape and urban exploration photography?
How do I remove dust spots on a Sony A55 SLT sensor?
Best Nikon upgrade from a D300 for low-light indoor sports