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01-01-2010, 03:55 PM   #1
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K7 - very awkward autofocus?

Bought the mate a K7 for Xmas. Did not get lenses to start with as she has lens from our superprogram and program plus that work manually with the K7.
Bought a SMC Pentax DA 50-200MM F4-5.6EDWR lens for her camera yesterday. At first we couldn't figure out how to get the auto focus to work, but after playing around for a while we got it to work by holding down the 'AF' button & the shutter button half was down both at the same time. Very awkward. Surely that can't be the way it was designed to work??
Second question - is there a 'DA AND a 'DA*' lens and if so is there a difference between a DA and a DA* lens especially with respect to auto focus?
pjd

01-01-2010, 04:18 PM   #2
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Try going into your menu option and see if you can change it. You shouldn't have to hold both down at the same time for it to focus. Otherwise you could try going into the Pentax Imaging website and talk with their Live Chat, they always seem to be helpful for me. Customer Support - Official PENTAX Imaging Web Site

All DA* uses a SDM focusing, which is a built-in focusing motor within the lens. SDM lenses are quiet compared to the DA lenses that use a screw-drive, making a loud whining noise. Other than the focusing difference, all DA*'s are weather-sealed and are built with high-quality materials. Most DA*'s are more expensive than DA of course. The DA* are Pentax's premium high-quality lens line, supposedly equivalent to that of Canon's L series lenses. Although the premium build quality, doesn't always mean premium optics over the DA. Some DA's such as the 16-45 f/4 rivals the DA* 16-50 f/2.8 in IQ.

The K-7 is a great camera, I have it and I love it. Hopefully your mate loves it too. Also great choice on the 50-200 WR, DA WR lenses are a great way to start off and still be able to utilise the K-7's weather-sealing capabilities.

Last edited by LeDave; 01-01-2010 at 04:56 PM.
01-01-2010, 05:09 PM   #3
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RTFM. You have managed to bugger up the AF settings if this is what is happening.
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