My opinion is the same regarding ETTR.
I know many people swear that it is great and all that but, just like you said, most of the time in a high ISO situation we are already shooting at the slowest "acceptable" shutter speed.
Exactly, and for landscape shooters (I'd consider myself more in that camp than wildlife) the question is often "oh, so there are other ISOs than 100?"
If let's say a low-light indoor event calls for a minimum of 1/60 shutter speed (e.g. people socializing, chatting, so there is some movement), and you're already at f/2.8 with a 24-70 2.8 lens, obviously you'll get whatever ISO that gives you proper exposure, let's say ISO 1600. Now, how much better off would I be by ETTR and either shooting 1/30s (can't do that), or bumping the ISO to 3200, then pulling it back in post?
I am aware that there are some complex signal-to-noise numbers involved here, but according to my tests, the end result is pretty much the same with my cameras. Shooting at 3200 with +1 EV ETTR then pulled back by a stop results a very similar image to shooting at 1600 at 0 EV. Again, I cannot always sacrifice shutter speed.
Of course major underexposure is a problem and should be avoided but I'm talking about proper exposure vs ETTR.
But if people believe that they get better results with ETTR, where they cannot sacrifice shutter speed (hence bumping the ISO up), that's great for them, I'm not against anyone using ETTR. I just don't see the benefit when you're already shooting at the lowest limit in terms of your minimum shutter speed, which you cannot afford to sacrifice in a given situation.
Yeah, I agree. I just play it by ear when outside in the field. If my shutter speeds are already suffering alot, I'll just have to deal with a bit darker exposures possibly, or at least, not pushing to the right as much as I'd like. Although, if exposing to the right is not affecting the shutter speed too badly, I'll try it.
The crazy thing is that the camera manufacturers themselves would/should know the best combination of settings for their sensor (in terms of when it's better to use a higher ISO setting). When you consider that some bodies can already do manual with auto ISO it would make sense to have a manual mode where you can choose a range of acceptable shutter speeds and ISO levels (and manually set your aperture) and let the camera choose the other settings in order to get the lowest noise/best ETTR that's within your acceptable shutter speed and ISO range. All you need then is a value in the raw file to indicate the shot has been ETTR overexposed by n stops, and the raw processor automatically shifts it down to compensate. I'm told there's even a flag in the DNG spec that's suitable for this. Canon really need to employ some of the Magic Lantern guys to work on their firmware