Thursday, 29 December 2011

AF speed comparison, Lumix G 45-200mm vs Lumix X 45-175mm

The Lumix X PZ 45-175mm f/4-5.6 has the "HD" designation, and it does have the newer "X"branding, indicating that it is a premium lens. I have already seen that it performs better in terms of optical qualities than the older Lumix G 45-200mm f/4-5.6 lens. But what about the focus speed?

I tried to put a figure at about 1 meter distance, close to the minimum focus distance of both lenses. Then I timed the focus. The camera had just been turned on, meaning that the lens is at "close to infinity" focus at the start of the experiment. There is a fair amount of light, with daylight coming in through a window.

Here are the results:



And in a table:

Focal length
Lumix G 45-200mm
Lumix X 45-175mm
45mm0.24s0.18s
max0.54s0.42s

Conclusion

In my tests, the newer Lumix X PZ 45-175mm does focus faster than the older Lumix G 45-200mm lens. The older lens was very fast focusing already, so this is a good achievement.

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