Request for A1ex or 1%:
Would it be possible to allow Auto ETTR (still photos) to do the following:
1. Shutter triggered (via external camera trigger)
2. Auto ETTR reviews histogram and adjusts exposure (works as it currently does) WITHOUT LV enabled.
3. AUTOMATICALLY fire the next photo and so on until the exposure is accurate WITHOUT LV enabled.
4. Delete the photos with incorrect exposure, retain the final image correctly ETTR. This might be asking too much, but it's worth a shot.
I'm a time-lapse photographer running a solar-powered D-SLR rig for long-term landscape time-lapses. You can learn more about me and what I'm doing here:
http://blog.planet5d.com/2013/02/making-a-diy-solar-camera-for-multi-month-timelapses-behind-the-scenes-on-mountains-in-motion/I just got a permit at a local state park to capture 4 months of fall foliage change AND fluctuating water levels on a local river. The main subject of my shot is a small waterfall. I'm currently shooting on a 600D with a custom intervalometer in Av mode. All values are locked except shutter speed and ISO (100-800 Limit).
OK... so why does all this matter in regards to Auto ETTR?
I want to use a 6-stop ND filter to ensure silky smooth water movement in all my shots throughout the day (the unit doesn't shoot after dark). As most of you know, in-camera metering is worthless AFTER applying such a dark ND to the lens. As a result, Auto Av metering is not possible to use if I want to run this unattended, multi-month time-lapse with a 6-stop ND filter for silky water exposures.
I have performed tests running the [600D] SixThirty.zip release (the latest posted by 1% for 600D) and Auto ETTR in photo mode plays extremely nice with the ND filter because it's obviously only looking at the histogram. The downside is that I have to manually shoot the subsequent photos after the histogram is reviewed by ML Auto ETTR which is not possible when the camera is unattended. I can only trigger it once per sequence via my custom, external intervalometer unit. If ML could know to continue shooting the scene until the histogram value offers a correct exposure, that would solve the problem.
Auto Snap ALMOST works as-is, but I cannot run the camera in LV due to battery limits on the unattended solar configuration. Technically, I COULD run LV with auto-off enabled after 30 seconds from the photo being shot (camera wake provided by my intervalometer controller) but that will definitely be wasting unnecessary power.
Secondary to the above request, it would be incredible if the incorrectly exposed images from the auto ETTR calculations could be auto deleted after they are shot and examined by the ML Auto ETTR algorithm to free up space on the 128GB SD card since I'm shooting RAW. I can only return to the camera every 3-4 weeks to dump the card and free up space. I'll find a way to work around this space limit if it's too much to implement.
Thanks for taking the time to consider my request. It sure would make for an interesting long-term ML stability test. I should add that I'm doing these long term time-lapses to eventually share with others online for free, this is not a client job that I'm being paid for.
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