JoeV
Thin Air, Bright Sun
I love my G1, take it with me on most off-work days. In the daytime I use the 14-45 lens almost exclusively, but sometimes also take the 20-1.7 if I expect to be indoors in subdued lighting.
In bright lighting the 14-45 is the better lens for me, offering a wider wide angle and telephoto options, and is at least as well corrected as is the 20. And its autofocus performance is just plain better; silent operation and focus so quick that one never notices it even focusing.
The 20-f/1.7 is incredible in subdued natural lighting, but it's wide f/1.7 aperture is of no use outdoors in bright sun, since the exposure times, even at ISO100, exceed the shutter's maximum speed. I could use an ND filter, I suppose, but that defeats the purpose. The 14-45 does a good 20mm f.l. in bright sun.
The AF performance of my sample of the 20 tends to hunt in low-contrast situations; I use center-weighted AF and the lens will often choose to first hunt for focus in the wrong direction, after it reaches that limit it reverses and finds focus. It's not a total limiter to using the lens effectively, but its AF operation one is always aware of; it's not transparent to the user like the 14-45.
~Joe
In bright lighting the 14-45 is the better lens for me, offering a wider wide angle and telephoto options, and is at least as well corrected as is the 20. And its autofocus performance is just plain better; silent operation and focus so quick that one never notices it even focusing.
The 20-f/1.7 is incredible in subdued natural lighting, but it's wide f/1.7 aperture is of no use outdoors in bright sun, since the exposure times, even at ISO100, exceed the shutter's maximum speed. I could use an ND filter, I suppose, but that defeats the purpose. The 14-45 does a good 20mm f.l. in bright sun.
The AF performance of my sample of the 20 tends to hunt in low-contrast situations; I use center-weighted AF and the lens will often choose to first hunt for focus in the wrong direction, after it reaches that limit it reverses and finds focus. It's not a total limiter to using the lens effectively, but its AF operation one is always aware of; it's not transparent to the user like the 14-45.
~Joe
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