GH1 + Kit Lens (14mm-140mm) MUCH faster AF than Pancake Lens (20mm) at DVinfo.net

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Panasonic LUMIX G / GF / GH / GX Series
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Old November 19th, 2009, 08:26 PM   #1
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GH1 + Kit Lens (14mm-140mm) MUCH faster AF than Pancake Lens (20mm)

I've been testing the Kit Lens and the Pancake Lens with my GH1, and I've noticed the Kit Lens (14mm - 140mm) is MUCH MUCH faster doing AF than the Pancake Lens (20mm), I would say easily double faster. Have you noticed the same or it's just me ?, thanks
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Old November 19th, 2009, 10:13 PM   #2
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That's been known to almost everybody. I have both lenses as well.

If your outdoors and it's bright, a suggestion to get the lens to focus better is to have a slower f stop.
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Old November 21st, 2009, 11:53 AM   #3
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Sorry for the basic question, when you say slower f stop that means a bigger one, right ?, f/3.5 versus f/1.7 (faster one), that's because the DOF will be bigger with smaller apertures ?, thanks
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Old November 21st, 2009, 08:30 PM   #4
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I was actually talking about video by the way and yeh something like f/3.5 would be better than f/1.7. It's just that you'll have more in focus that way. In photography it all depends. For example with something like f/1.7 you'd be able to get a higher shutter speed to catch the moment quicker but at the same time less is in focus. It all depends on how blur you want the background to be.

Last edited by Paulo Teixeira; November 22nd, 2009 at 02:45 AM.
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