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Messages - JonnyA

#1
I use remote cameras to take day and night shots out in the field. For night shots I want the camera to select 30s shutter speeds. For some reason my Canon and Nikon bodies have trouble with this, in AV mode they select anywhere from 1-15s shutter speeds, even in total darkness.

I just installed ML on my 7D (latest night build) and hoped the autoexposure module could help me get the camera to select 30s shutter speeds at night. However I'm still getting 15-20s exposures. I have my autoexposure parameters as follows:

lens aperture: f/5.6
tv minimum: 32"
same TC curve: on
av range: f8-f8
iso range: 1600-1600
EC: 0

Any idea why I'm not getting the full 32" exposure when I'm taking pictures in a pitch dark room in my basement? I have the camera menu lights off, so don't think I'm getting stray light, got the viewfinder covered..

thanks a lot for any help
#2
General Help Q&A / Rack focus a long exposure still image
December 21, 2014, 05:54:04 PM
For still photography, can ML adjust focus during a long exposure, say 30 seconds? I'd like to start a long exposure with the focus set on the foreground (which would be illuminated by flash), then quickly switch to focus at infinity for the remainder of the exposure.

I see that there is rack focusing for movies, and ramp focus for timelapse, but I was unsure of whether there are scripts that allow one to change focus during a still image. I would do it manually but I'm shooting remotely. Thanks in advance if anyone can point me in the right direction.