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11-04-2014, 03:03 PM   #16
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A non-A lens in Av mode will always shoot wide-open regardless of the aperture ring setting unless the auto aperture lever has been modified. You need to use Manual (M) mode. Provided you have the menus settings for stop-down metering the green button will stop-down the lens and set the shutter speed from the exposure reading through the lens.

Using Older Lenses with the PENTAX K-x | Ricoh Imaging Support

11-05-2014, 01:34 PM   #17
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I'd like to thanks you all for your responses to my problem. I'll follow your advice and let you know soon if you have solved my problem. Thanks.
11-08-2014, 02:50 PM   #18
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I had to adjust my kx focusing screen by shimming it with scotch tape until the images matched my focus points. Use a ruler held at a 45 degree angle and try focusing on a specific number line with your macro close up and wide open and that will tell you if your screen needs shimming.

Last edited by Sliver-Surfer; 11-08-2014 at 03:51 PM.
11-09-2014, 07:07 AM   #19
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I'd like to thank all of you for your responses to my problem of not being able to stop down my lens and getting it to give me the correct exposure. I finally had time to follow the advice given. The key to my problem, as some of you mentioned, was to use the Green Button before pressing the exposure button. When I first did this it still didn't work. I realized that I would have to reprogram the Green Button to "Action in the M Mode-Tv shift". After I did this, pressing the Green Button gave a loud click and the aperture temporarily closed to the selected aperture and set the exposure time. Pressing the exposure button then gave the correct exposure time and a good shot resulted. I was beginning to think that I had purchased a dud lens. Problem solved. Thanks again for your expert advice.

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