Comments on: Pentax新款顶级单反K-7 http://thdp.org/photo/pentax-k-7/ 崇尚技术，享受生活 Tue, 07 Feb 2012 09:04:51 +0000 hourly 1 http://wordpress.org/?v=3.0.4 By: joe http://thdp.org/photo/pentax-k-7/comment-page-1/#comment-346 joe Fri, 04 Sep 2009 08:29:41 +0000 http://thdp.org/uncategorized/pentax%e6%96%b0%e6%ac%be%e9%a1%b6%e7%ba%a7%e5%8d%95%e5%8f%8dk-7#comment-346 I can disable long shutter speed noise reduction for images up to 30 seconds (which should be enough for most). It is disappointing I can't turn it off for longer exposures. I can disable long shutter speed noise reduction for images up to 30 seconds (which should be enough for most). It is disappointing I can’t turn it off for longer exposures.

]]> By: thdp http://thdp.org/photo/pentax-k-7/comment-page-1/#comment-343 thdp Thu, 03 Sep 2009 17:08:35 +0000 http://thdp.org/uncategorized/pentax%e6%96%b0%e6%ac%be%e9%a1%b6%e7%ba%a7%e5%8d%95%e5%8f%8dk-7#comment-343 <a href="#comment-341" rel="nofollow">@joe</a>, Sorry to hear that, but I think there must be a solution. Even the lowest end k-m has the options to set the noise reduction for slow shutter speed and high-iso. You can refer to these two sources for more information. http://support.pentaximaging.com/documents/382 http://www.imaging-resource.com/PRODS/K7/K7A5.HTM @joe, Sorry to hear that, but I think there must be a solution. Even the lowest end k-m has the options to set the noise reduction for slow shutter speed and high-iso. You can refer to these two sources for more information.
http://support.pentaximaging.com/documents/382
http://www.imaging-resource.com/PRODS/K7/K7A5.HTM

]]> By: joe http://thdp.org/photo/pentax-k-7/comment-page-1/#comment-341 joe Thu, 03 Sep 2009 06:04:53 +0000 http://thdp.org/uncategorized/pentax%e6%96%b0%e6%ac%be%e9%a1%b6%e7%ba%a7%e5%8d%95%e5%8f%8dk-7#comment-341 There is a serious limitation with K-7 that makes bulb exposures extremely difficult and tedious. It involves mandatory noise reduction which doubles every exposure. Why is this a problem? This affects nearly all my night time photography. I enjoy taking photos of star trails. For example, a 10 minute exposure will take a total of 20 minutes to complete. I wanted to capture lightning, generally I will leave the shutter opened for a minute or more. It was so frustrating because I missed so many potentially great shots because the Pentax K-7 was busy doing its noise reduction! Why can't I turn noise reduction off? I shutting raw. I talked to my Nikon and Canon friends and they are amazed. One spent 20 minutes flipping through menus, convinced that there must be a way to turn of NR. Finally, the complaints found on the pentaxforums confirmed this is a known problem. Since this problem still exists with the K7 and there are no signs that Pentax cares to offer a solution, Pentax has lost me as a customer. I will be selling all my Pentax equipment on eBay by September, if I see no solution. There is a serious limitation with K-7 that makes bulb exposures extremely difficult and tedious. It involves mandatory noise reduction which doubles every exposure.

Why is this a problem?

This affects nearly all my night time photography. I enjoy taking photos of star trails. For example, a 10 minute exposure will take a total of 20 minutes to complete.
I wanted to capture lightning, generally I will leave the shutter opened for a minute or more. It was so frustrating because I missed so many potentially great shots because the Pentax K-7 was busy doing its noise reduction! Why can’t I turn noise reduction off?
I shutting raw.

I talked to my Nikon and Canon friends and they are amazed. One spent 20 minutes flipping through menus, convinced that there must be a way to turn of NR. Finally, the complaints found on the pentaxforums confirmed this is a known problem.

Since this problem still exists with the K7 and there are no signs that Pentax cares to offer a solution, Pentax has lost me as a customer. I will be selling all my Pentax equipment on eBay by September, if I see no solution.

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