sirimiri wrote:
For the A7R, why is it that autobracketed shots don't require the shutter to cycle, but the first shot does require a blackout of the sensor?
Hmmm, are you sure? My A7r does close shutter before each exposure, also first. Test with long enough exposures, like 10s, so you can actually separate actions before exposure and after to see the shutter in operation.
sirimiri wrote:
What's the A7R's process for autobracketing, that differs from a single shot?
Continous bracketing mode process:
When using shutter button: if you hold button in continous autobracketing mode it takes all 3/5 images in a row.
When using IR remote: when you press shutter button camera automatically takes the shots
When using wired remote: same behaviour when using shutter button
Single bracketing mode process:
When using shutter button: you need to lift shutter button between exposures
When using IR remote: you need to press remote for each exposure
When using wired remote: same behaviour when using shutter button
Other differences in process are that when using long shutter speeds on continous bracketing the blackframe method is not used (=pictures are noisier, not good for example for HDR!!!). This is really sad because if Sony engineers would have had any brains they could have done black frame for all 3 exposures in one go, like done in some cameras (depends of course sensor's capabilities).
I don't think there is any difference between single shot and bracketing modes, what comes to EFCS.
With A7r or A7 I never use the continuous bracketing mode, due to shutter vibration (also A7 need to close shutter to read the sensor) and lack of black frame. With 5DmkII I used autobracketing and live view (automatically takes all exposures of autobracket series), since 5DmkII didn't have as bad shutter vibration (it also was needed to close to read sensor - it has EFCS like A7).
Samuli