Friday, October 31, 2014

Canon FD 24mm f/2.8 and Metabones Speed Booster versus Sony 18-55mm f/3.5-5.6 OSS

Here is a simple (simplistic?) comparison of the Canon FD 24mm f/2.8 from 1978, attached through and Metabones FD/E Speed Booster to the Sony Kit lens, 18-55mm f/3.5-5.6 OSS.

This test was performed on a Sony NEX-F3 (borrowed) camera.  This is a 16 MP APS-C sensor.

Here are the full res images:

Canon FD 24mm f/2.8 with Speed Booster, shot at f/8 (becomes 17mm at f/5.6), 1/2000 sec, ISO 200

Sony 18-55mm f/3.5-5.6 at 18mm, f/8, 1/400 sec, ISO 200

The camera metered differently for these two shots.  The shot with the Sony kit lens was 0.8 stops too bright--I adjusted it down in Lightroom to match (more or less) the Canon FD image. The white balance was also different.  You can also see (maybe) that the 24mm lens (which gets reduced to a focal length of 17.14mm) is a bit wider than the 18mm kit lens.

Here are 640x480 100% crops of the red aircraft navigation light on the 8th floor of Wilson Hall (at Fermilab):

Canon FD and Speed Booster

Sony Kit lens

Here are two images inside, a bit closer to the camera (less than 1 meter):

Canon FD 24mm at f/2.2 (effective)

Sony Kit lens at 18mm, f/3.5

Canon FD 24mm at 100% crop

Sony Kit lens at 100% crop

To my eye, the Canon FD is sharper.

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