Does it work that way? A canon 50mm f1.4 lens set to use f1.8 in the DSLR will have the same performance as a 50mm f1.8 lens? Are we paying extra just to have the f1.4?
Does it work that way? A canon 50mm f1.4 lens set to use f1.8 in the DSLR will have the same performance as a 50mm f1.8 lens? Are we paying extra just to have the f1.4?
Can we say that for f1.8 lens, the best performance is at f3.6
Does it work that way? A canon 50mm f1.4 lens set to use f1.8 in the DSLR will have the same performance as a 50mm f1.8 lens? Are we paying extra just to have the f1.4?
Yes, you are paying extra just to have the f1.4.
The performance of 2 different lenses is seldom the same. Usually, but not always, the bigger aperture lens would be much more expensive and better made. So even when they are stopped down, they frequently have better performance. But not always, some of the sharpest lenses are 50 f2.0, and a 50 f1.2 is usually not as sharp.
Yes, you are paying extra just to have the f1.4.
The performance of 2 different lenses is seldom the same. Usually, but not always, the bigger aperture lens would be much more expensive and better made. So even when they are stopped down, they frequently have better performance. But not always, some of the sharpest lenses are 50 f2.0, and a 50 f1.2 is usually not as sharp.
U're sure? U want to try my f/1.2 wide open?
Snoweagle you are absolutely right...
It has also been said that the sweet spot for the 50 f/1.4 is at f/2.0 to f/2.2. Personally I tried and I do find that this is true in my copy of 50 f/1.4. I wonder if this experience is shared among all the other users of 50 f/1.4?No. Sweet spot is between f/5.6 to f/8.
So if we were to use a 50mm f/1.2 and a 50mm f/1.4 both at f/1.4, would it be generally correct to say that the 50mm f/1.2 will be sharper in this case?From my experience with both lenses, a good copy of 50 mm 1.4 is considerably sharper than 50 mm 1.8 both wide open.
The 50 mm 1.8 has significant halation (glowing highlights) at f1.8.
So if we were to use a 50mm f/1.2 and a 50mm f/1.4 both at f/1.4, would it be generally correct to say that the 50mm f/1.2 will be sharper in this case?
From the countless technical reviews done and put up online for us to see... yes. Check TheDigitalPicture or Photozone.de for such resolution tests.
My 50 1.4 seems to be legendary. Wide open @ /1.4 and it's still sharper than many copies of 50 1.8II wide open. I use it wide open all the way down to /11 for studio stuff and it doesn't disappoint. I appreciate the better built and micro-USM, although the focus ring is still a bit 'scratchy' i.e. not true rear-focusing USM (or something of that sort). Above that, I get better background blur due to the number of blades, a better pattern of flare that I can incorporate into my shots without most of the image being washed out, and veeeery slightly better color reproduction.