Is there any way to change the aperture on a lens without the "A" setting when using it on the K20D?
Posted by admin | Under Pentax K20D Saturday Nov 28, 2009I bought the Pentax K20D a few days ago and just now noticed that the aperture on lenses without the "A" setting (on the aperture ring) stays wide open. I cannot change the aperture, even when I spin the aperture ring on the lens. Is there a mount that I can place between the lens and camera so I can use this feature or is there a setting that I have to change? I tried looking through the manual and on google, but can’t find any information.
I did not buy the kit lens when I ordered the camera because I assumed my other lenses would work fine on the K20D. I have one automatic lens, but it is a 75-55mm kit lens from my SF-1. I would like to be able to change the aperture on my 80-200mm, 50mm, and wide angle lenses too.
I already have "use of aperture ring" permitted.
These lenses do not have a lock that I can see. They are fully manual.
I have been using the camera in full manual mode, but the aperture still stays wide open, even when I take the picture. I have tried every mode and it is still the same.
proshooter: YAY!! I got it to work! Thank you so much!! =D
For non A lenses you can only use them in full manual metering mode.
As you have set the use aperture option the lens aperture should stop down automatically as the photo is being taken as per normal.
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Does the aperture close when you use the depth of field preview facility?
all my non a lenses stop down on my Pentx *istDS and K10D and so should all K mount lenses on the K20D.
Unfortunately it may be faulty camera as the K20D should definitley work with all K mount lenses.
Hello There.
I do not know the answer to the question. I looked on google too, but i didn’t find anything remotely relevant. I did, however, go on Pentax’s website, you can have a live chat with someone, here:
http://www.pentaximaging.com/support/live-chat/#
That looks quite interesting.
***Edit***
Yeah, you’ll have to check with that on Monday. Hear are some more numbers, but i think they only operate on Week-Days too, but that is to be expected. Try looking more thoroughly through the manual.
References :
Amateur Photographer
i know olympus covers that in the owner’s manual,
i believe pentax does too.
pentax is a good camera, i had one for years that took all kinds of abuse and kept right on clicking away.
References :
Look on the lenses for a little "lock" where you can set the aperture to its smallest aperture and then lock it there.
Many lenses that have the aperture controlled from the camera have such a switch.
References :
profotog
http://digimanual.com/pentax.php
References :
For non A lenses you can only use them in full manual metering mode.
As you have set the use aperture option the lens aperture should stop down automatically as the photo is being taken as per normal.
======
Does the aperture close when you use the depth of field preview facility?
all my non a lenses stop down on my Pentx *istDS and K10D and so should all K mount lenses on the K20D.
Unfortunately it may be faulty camera as the K20D should definitley work with all K mount lenses.
References :
http://photography.suite101.com