Seems like the new 50/85 are supremely sharp corner to corner wide open without the chromatic aberrations that were problematic in the EF 1.2s, but if you've seen differently then definitely share your experience. I don't want to spend $6-10k on lenses that are not as close to absolutely perfect as possible while still having autofocus.
Well, of course f/1.2 are going to be much brighter - and allow faster shutter speeds/lower ISO, BUT...you'll have to shoot at more open then f/2 to get that advantage - and while that suits certain shots or approaches, you might want to consider how often do you really want to shoot with that narrow a DoF in real life (as opposed to when trying it out)?
I have two good kidneys, and I'd like to keep them, but at this rate I may have to start mapping out my priorities!!
Hmmmmmmm......I agree with this. Maybe going all in at f/1.2 isn't the right approach. Ok so hypothetical: You're being held at gunpoint by an aperture fiend and you're told that you only get to keep one of your f/1.2 lenses because this is a really considerate thief, all things considered. You try to lighten the mood by making a joke about being into shooting yourself, but the thief isn't having it. Which focal length would you want to have that wide aperture for? 50mm? 85mm? 600mm?Well, of course f/1.2 are going to be much brighter - and allow faster shutter speeds/lower ISO, BUT...you'll have to shoot at more open then f/2 to get that advantage - and while that suits certain shots or approaches, you might want to consider how often do you really want to shoot with that narrow a DoF in real life (as opposed to when trying it out)?
I have most EF f/1.2 primes, or nearest to depending on focal length, but in reality most of my shots are at f/2 and above, due to DoF needs - even most portraits.
Just something to consider...
Ooh, good question - not so good an answer (from me) I suspect, but I'll give it a go:
It's totally the opposite, I said the time passed since the beginning of exposure. Obviously it includes exposure itself, readout etc.
Event Event is shown
| |
-<Exposure>-+-<Processing>-<EVF>---------<Exposure>-<Processing>-<EVF>---------------> time
I'd keep the 600mm 1.2, then after the thief is gone, I'll sell it and buy every other 1.2 prime.
We're mostly concerned about the spikes in processing time, but we assume they're rare and we're just skipping frames in such cases.
On your timeline diagram, the 'lag cause' happens while we're capturing and rendering frames. The processing lag doesn't happen somewhere in the air, it happens in our CPU. So our processing pipeline is either busy with processing the lag cause, or the current frame. We need to capture/read sensor 30 times per second in order to render 30 frames per second in the EVF. If the lag cause is one-off, it's a spike and we simply skip the frames. If the cause is permanent and happens every frame, we simply don't have enough processing power to do 30 frames per second.
The RF 50mm f/1.2L and RF 85mm f/1.2L are true wonders. I would say that the 85mm is the better of the two for portraits. Both are insanely sharp at f/1.2. I have sold my RF 50mm f/1.2L only because my 28-70 covers 50mm just fine for me (also a truly fantastic lens). I just do not have much use for a 50mm prime for my portrait work. Really looking forward to the RF 70-135mm f/2, though an RF 135mm f/1.4L would also be extremely tempting. The autofocus on all three are as near perfect as one can get. With the R's eye-AF my keeper rate (tack sharp focus on the iris) is at least 95%. That is far and away more than what I got with EF lenses on the 5D Mark III. Hope this helps with your decision. I have seen zero CA with the 50 or the 85 in my work.
