How about a low light solution that might be great?
As we all know, fighting low light imaging is a science until itself.
It appears that SONY may just release a CZ 24mm f/1.4, which would be one of the brightest and deepest DOFs at f/1.4 around. A terrific ‘low-light lens’, ditch the flash and this would be the one to have in your lens bag.
How good is it?
Compare these various lens DOF results* at 10 feet:
CZ 24mm @ f/1.4 = 2.8 feet
35mm G @ f/1.4 = 1.4 feet
50mm @ f/1.4 = 0.65 feet
CZ 85mm @ f/1.4 = 0.22 feet
CZ 135mm @ f/1.8 = 0.11 feet
How about 20 feet?
CZ 24mm @ f/1.4 = 13.1 feet
35mm G @ f/1.4 = 5.71 feet
50mm @ f/1.4 = 2.75 feet
CZ 85mm @ f/1.4 = 0.94 feet
CZ 135mm @ f/1.8 = 0.37 feet
Ask yourself, "What kind of focus that would be for the little one's recital?"
* These measurements are only on the APS-C sensor DSLRs.
There is a f/1.8 out there
Arguably, SIGMA's 24mm f/1.8 (D) EX Aspherical DG DF Macro ø77mm-filter comes close and for $479, seems affordable. As a mid-grade alternative ... you lose a third-of-a-stop of light, but the DOF gets a bit bigger.
@ 10-feet it is 3.88 feet
@ 20-feet it is 17.5 feet
This is one SIGMA I would seriously consider ...
Then there is the Super Wide SIGMA 20mm f/1.8 (D) EX Asperical DG DF RF for $569, but the optical distortion can be a little rough. It is decidedly heavier, with a ø82mm filter.
@ 10-feet it is 5.82 feet
@ 20-feet it is 30.6 feet
For the time being, let's just go with the gut. This particular Zeiss lens is being requested at higher levels.
Originally Posted by dr4gon