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02-10-2011, 06:31 PM   #1
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Tamron 18-250mm slow processing

Hi all,

I've noticed that when I've been taking pictures with my K-x and using my Tamron 18-250mm f3.5-6.3 lens, it takes around 2-3 seconds after the photo has been taken for the image to be processed and shown on the LCD screen. It's noticeably slower than when I take pictures using my 50mm f1.4 lens. Anyone have any ideas why this is the case?

02-10-2011, 06:40 PM   #2
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Don't have a K-x, just a wild question: do you have in-camera lens correction turned on? If so, try turning it off to see if there is any difference.
02-10-2011, 06:47 PM   #3
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As SOldbear said make sure that corrections are turned off, same with copyright info. Beyond that I do not know. I also have a Kx and every lens I own (about 10-12), the preview speed is exactly the same unless I turn on those corrections and copyright info. I do not see how a lens could/would affect the preview speed.
02-10-2011, 08:54 PM   #4
hcc
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I am puzzled by your problem. Initially I thought like others that it was the lens distortion correction. Definitely switch off this.

However the Tamron 18-250mm is not a Pentax lens and it would not be recognised by the K-x for lens distortion correction.

Puzzling....

02-10-2011, 11:24 PM   #5
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Thanks for the replies all. Lens correction is greyed out, but it's always been off. The copyright info placeholder has never been enabled as well. Puzzling indeed :S
02-11-2011, 12:56 AM   #6
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What about highlight and shadow correction? If you want to troubleshoot this, turn everything off that you can, including any special processing. See if that solves your problem and then start turning stuff back on until the problem comes back. Also try formatting your card (in the camera) in case there is something getting hung up there during the save/write operations.

02-11-2011, 07:04 AM   #7
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Does it do it at all focal lengths? Or just wide angle? Generally speaking the more colors in a pic, the larger the file & the longer it takes to render.
02-11-2011, 04:33 PM   #8
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It's fixed now, although the fix wasn't what I thought would do it. I cleaned the contacts on the lens that connects it to the camera body using my lenspen and that has improved the processing time after a photo is taken :S

02-11-2011, 04:46 PM   #9
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QuoteOriginally posted by hcc Quote
...

However the Tamron 18-250mm is not a Pentax lens and it would not be recognised by the K-x for lens distortion correction.
My k-x had the lens correction options enabled with the Tamron 17-50mm 1:2.8, they apparently didn't do anything useful (but caused a delay like this all the same).
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