Question about Pentax *ist D Digital Camera

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Focus problems I can't figure out why, but what I see as focused does not come out focused. I have tried the diopter. Also I have an old pentax zx6 that I can focus fine so I don't think that it is my eyes. Any ideas?

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  • jeff eddy May 18, 2007

    It is a mechanical problem, or one with my eyes, I have a good understanding of how it works and it is the same at all shutter speeds.

  • jeff eddy May 26, 2007

    I figured it out, there is a small brass shim that goes on top of the focus screen, it was on the wrong side. I changed it and now it works. Thanks for all the help.



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If you have a low light setting or night setting or a speed priority setting there is the possibility one or the other has been inadvertently activated and you are getting long time exposures check out all your setting with the manual.

Posted on May 17, 2007

  • john ash
    john ash May 25, 2007

    That being so I suggest Pentax need to know about it
    So go to the Technical Support team
    and give a comprehensive reports of this problem



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I have a pair of pentax 10x42 DCF HRc binoculars that will not focus properly througn the right eyepiece. Just wondering if this is a common problem and is it worhtwhile getting repaired

The binos will rack focus both at the same distance, you need to rack focus left side to distant image with left eye only, then turn diopter focus to focus right eyepiece. Diopter focus is thinner wheel behind focus wheel

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By adjusting the diopter on your camera effect the image quality? I guess what I'm trying to say is, will the diopter setting effect how your camera adjusts the focus in auto or manual?

Diopter is for your eye only and does not effect the focus of the camera. By using the 1/2 down method, by pressing the photo taking button half way down, you can set the cameras focus. on some cameras this is shown where it will focus by a red square. If you change the diopter this is like adding by focal lenses for reading a book. and setting the distance your particular eye needs for eye relief. On binoculars this is done with screwing the eyepiece closer or farther away from the other lens. check out online this will give you more details of what a diopter is or does. Always know what setting your shooting at as well. for instance if you are on a flower setting or Macro then this is for up close work. But up close doesn't mean too close. Most cameras on Macro need to be 6 inches to 12 inches away. But if you are say 24 inches away it won't focus right so don't try to zoom in, use your optical instead of digital and simply move closer or change the settings on the camera to a different setting or it may be blurry.

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I have a Cannon EOS Rebel xsi SLR camera. When I look through the viewfinder the image is blurred. IT worked fine the last time I used it, but this time it is blurred and I haven;t been able to correct...

Two possible situations. It might be that the lens focusing system isn't working. Try focusing by hand (turn the lens manually) If the image moves through a point of sharp focus, then you have a lens or focus motor problem.
More likely, you have improperly adjusted the diopter. There is a small, circular wheel on the right side of the viewfinder, toward the top corner. It is sometimes covered by the rubber viewfinder hood so you might not notice it. This adjusts the diopter correction in the viewfinder and if it's set wrong, nothing will ever look in focus. The pictures would be fine, but since the diopter is a correction for your eyesight, the viewfinder will be out of focus.

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When you have a diopter adjustment dial, try looking through your viewfinder and move the diopter one way or the other until it appears to be in focus for you.

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I don't own a K10D, but I do own a K100D which I have successfully used both manual focus & auto-focus lenses from my old Pentax stash!

1) If it is a manual focus lens, you need to turn off Autofocus on the body of your K10D. On my K100D, there is a switch on the side of the lens mount that says [-MF or -AF]. "-MF" is manual focus mode & "-AF" is autofocus mode. Since your lens doesn't have autofocus capability, turn it to the "-MF" mode.

Also . . . When I press "Menu" and go to "Custom Setting", I change two settings . . .

1) I change "Using aperture ring" to "Permitted". This allows you to use manual lenses (M lenses) that do not have an auto(exposure) setting, and also lets you use Auto lenses (A, KA, KA2, FA, etc.) in either the Auto or manual aperture setting modes.

2) I change "Fl with S lens used" so that even with a manual focus lens, although I don't have autofocus capability, my K100D beeps and shows a little red square in the viewfinder when I have successfully focused manually!

The K10D should have the same options.

This should get you up and running!

I have had a load of fun with my old lens on my new digital Pentax!

Take care & Happy Imaging!

Jul 14, 2008 | Pentax K100D Super Digital SLR Camera

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