I'd like to have an SLT-mirror that flips up during the shot

Started Oct 1, 2012 | Discussions thread
theswede Veteran Member • Posts: 4,006
Re: To be exact.

Dirk W wrote:

I think it's two factors - the SLT eats light

This is not in contest. The SLT removes 1/3-1/2 stop of light.

and adds some noise because of the material

The material is a thin film of polymer coated with a wavelength neutral mirror. In other words, it is an ND filter of 1/3-1/2 stop strength. If you actually hold that this affects the image in any way other than reducing light it would be very interesting to learn what you base this on.

and/or effect on light physics.

What, exactly, does this mean? What is "light physics", and how is it effected by a neutral density filter?

Anyway, both issues would be eliminated if one could chose to flip up the SLT during the exposure.

First you have to demonstrate either or both of these "issues" actually are issues. And no, one comparison at ISO 3200 from uncontrolled DPR studio shots does not demonstrate this; you can't even support that white balance, exposure, focus point, DOF and AA filter are equivalent, so you have no way of concluding what differences are caused by the SLT mirror.


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