Real-time exposure monitoring: is it possible?

Started by garry23, June 22, 2017, 12:13:23 AM

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garry23

@A1ex

I saw on another camera that is was possible in Bulb mode to monitor the 'liveview' as the exposure 'developed'.

For LE work this seams a great feature, as it is often 'hit and miss' that you have an optimum exposure.

I was therefore wondering if it was possible in ML to consider a feature that provides realtime feedback on the exposure, say in bulb mode.

The feedback would ideally be a LV image and the RAW histogram. Or even 'just' the RAW ML histogram displayed on a blank LV screen.

Do you think the idea is workable? That is for an ML C coder ;-)

Cheers

Garry


garry23

Walter

Thanks for the link, which tells me it's possible...I think.

But, not for me to do, i.e. get into c code etc.

I still think it would be a great LE feature, even 'just' giving RAW histo feedback ;-)

Cheers

Garry

a1ex

Also answered here: http://www.magiclantern.fm/forum/index.php?topic=17940

In a nutshell: it's not possible to peek into an in-progress image capture, but it is possible to do a long exposure by stacking shorter exposures. The result will be different (better in highlights, worse in shadows).

BTW, ML has tools to evaluate a long exposure before taking it (such as extended exposure simulation in LiveView, via Expo Override, or Auto ETTR compatible with Bulb mode).