I don't know actual T-Stop values, thats quite tricky to work out, but it seems the m-mount is not quite as fast as the E-mount.
To me it's not significant, and when you're shooting in manual mode with auto ISO on, the A7rmkii selects the same ISO number with each lens.
SharpContrast wrote:
I don't know actual T-Stop values, thats quite tricky to work out, but it seems the m-mount is not quite as fast as the E-mount.
To me it's not significant, and when you're shooting in manual mode with auto ISO on, the A7rmkii selects the same ISO number with each lens.
Is that a dof observation or an exposure brightness observation?
One thing to note though, my comparisons so far have been shot in jpg and im not sure if there is any extra in-camera processing going on with the E-mount?
Fred might be able to confirm if that's the case or not?
Metering with and without a chip will affect the exposures.
In camera adjustments/corrections: vignetting, CA, and distortion also will differ.
That is a pity.
SharpContrast wrote:
One thing to note though, my comparisons so far have been shot in jpg and im not sure if there is any extra in-camera processing going on with the E-mount?
Fred might be able to confirm if that's the case or not?
Obviously lighting, subject matter, shutter speed, aperture value and ISO all identical.
Also camera firmware hasn't been updated since these lenses were released.
SharpContrast wrote:
Obviously lighting, subject matter, shutter speed, aperture value and ISO all identical.
Also camera firmware hasn't been updated since these lenses were released.
it i recall canon cameras boost actual iso with out labeling it as such in exif when they read a f/1.2 value and maybe even f/1.4? maybe i'm misremembering though.
Great lens for wedding as well ... used this exclusively at a cousins wedding to take pics of the family and stuff (staying out of the Photographer's way of course ... I used to do weddings so I know how that goes lol )
I doubt its applying an in built lens profile.
