Problems with a7 that need firmware update

Started Feb 15, 2014 | Discussions thread
OP Dustinash Contributing Member • Posts: 668
Re: Problems with a7 that need firmware update

Gary Friedman wrote:

Dustinash wrote:

-the autofocus assist DOES NOT work with flashes, when you mount a sony flash and are using standard FE-mount lenses, the camera will still try and use its awful orange light instead of the much subtler red grid from the flash. AF assist light will not work at all with alpha glass.

The sensor (which is responsible for focusing on mirrorless cameras) is blind to IR light, and therefore can't see the AF assist lights coming from the flash. That's why they're not enabled, and that's why the orange light (which is within the visible spectrum) is used instead.

However, the flash's AF assist lights SHOULD work when the LA-EA4 adapter attached (if Sony thought to check for it in firmware). I'm going to have to test that tomorrow.

Gary Friedman

Nope.   Alpha glass won't use any AF light.

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