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

Started Oct 1, 2012 | Discussions thread
MaxLowLight
Forum MemberPosts: 79
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Re: Here are sample pictures with, and without an SLT mirror
In reply to Rashkae, Oct 3, 2012

Rashkae wrote:

1. As previously stated, that's using the old, 1st-gen SLT mirror.

2. There is still NO EVIDENCE of the SLT "manipulating light physics and adding noise".

See final comment.

3. The "detail loss" looks more like a misfocus on that old minolta lens caused by removing it, fiddling around with the mirror, re-mounting it, then trying to shoot again.

The detail loss is either from added noise (see final comment) or because of light pathway pollution. Why do you think adding a TC distorts IQ? ANYTIME you add glass to the light pathway you are degrading the image.

I myself have noticed on the same old Minolta 135mm f/2.8 that you sometimes need to reset focus (focus on something nearby, then refocus on your original target) to get it to be on-focus again.

This isn't user error, it is the inaccuracy of the AF system. PDAF isn't always spot on, and sometimes the focus points are too large and focus on things you don't want. Think of it like this. Try C-AF, point at a person. Now have that person move a fraction of an inch towards you. With slight enough movement, your AF will not adjust yet the object will have moved to a less sharp position. In you explanation above, you don't even have to point at something else for focusing, just move your camera 6 inches closer and refocus your subject. You are simply describing AF limitations.

So, where is this magical ability to add noise? By your explanation, we should all clearly see ISO noise magically added in the SLT image.

The mirror doesn't add noise, it redirects some of the light. Because your shot will be underexposed, you have to raise the iso. Sony already does this before you even touch the camera, its part of the calibration. They have more gain per iso stop than other cameras, which is why they have more noise per iso stop than other cameras.

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