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02-25-2011, 05:38 AM   #31
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I got my old manual lens to work via this method.

However, I have a problem, I've changed the setting back to the way it was and put my 70-200 Sigma APO back on my K10D and I STILLget the f-- error . . .

What am I doing wrong?

02-25-2011, 10:45 AM   #32
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Try wiping clean the contacts on the mount and the lens. The camera should recognize the lens even if settings are set to use aperture, etc.
02-25-2011, 11:10 PM   #33
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QuoteOriginally posted by crewl1 Quote
Try wiping clean the contacts on the mount and the lens. The camera should recognize the lens even if settings are set to use aperture, etc.
Thank you sir, you rock, fixed!
03-01-2011, 07:14 PM   #34
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What am I doing wrong?

Mounted my new Auto-Tak 55 1.8 on my 10D. Set the green button to shutter mode (Tv Shift) when pressed. Shooting in M. When I compose the lens is in Auto mode then I move the cam over to manual before pressing the Green Button.

My issue: I press the green button and then fire the shutter and the initial shot is always way under-exposed. But if I fire the shutter again - without repressing the green button - the exposure is perfect.

Is this normal?

Here's an example. Same settings - two seconds apart.

BTW: nice lens

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03-04-2011, 01:33 PM   #35
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@yustr - I don't know what's causing your exposure problem, but the photos you uploaded have been stripped of EXIF data which means that we can't compare the settings recorded by the camera.
03-04-2011, 01:56 PM   #36
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certainly not the way my K10D works

press green button and exposure is OK maybe you are hitting the A/M switch on the lens in the process?
03-11-2011, 01:45 PM   #37
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I feel rather silly but maybe my error will help someone else.

I had auto-bracketing set to "ON" from some experiments I was doing with HDR. I guess I never noticed and it wasn't until another Pentaxian was trying to help, did I notice a pattern in the exposure data. Then it was a palm to forehead moment.

Anyway, thanks for your help.
Robert
03-22-2011, 04:33 PM   #38
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Not sure this has been listed or not but the stopped Down metering on k mount lenses wont work on some cameras with lenses that have plastic mounts or painted mounts

03-31-2011, 02:20 PM   #39
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Everyone seems to be getting it but me.Mounted Sears 50mm 1.7 on a k-x followed instructions as best as I could but can't get camera to fire,the f--- is flashing.Have spent a couple hours on this going threw the entire menu several times.
Jake
03-31-2011, 03:22 PM   #40
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Solved this,last item on the menu,must be set to allow use of aperture ring.
Jake
03-31-2011, 07:01 PM - 1 Like   #41
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QuoteOriginally posted by bjake Quote
Solved this,last item on the menu,must be set to allow use of aperture ring.
Jake
Good for you. I know we all have been there. Once you start seeing how great these are, you'll wonder why everyone is paying big bucks for these new ones. I know I am.
04-18-2011, 01:42 PM   #42
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I'm new to the forums.. was thinking about buying a SMC Pentax-M 1:1.7 50mm lens from ebay for portraits and street photography. My camera is K-x. Wondering if I'll need a converter to use this lens? Also, do you suggest using a different lens (maybe a more expensive AF?).. Thx!
04-18-2011, 03:15 PM   #43
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No converter will be necessary, but you will have to make the menu settings described at the beginning of this thread.
The Pentax A series may be a little easier to use since it will meter automatically so if you can find an A version vs. an M version you might want to get that one instead.
04-18-2011, 03:39 PM   #44
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There are more then just one 50mm for the Pentax. The most popular are usually these 3 and what you could expect the price range to be.

50mm f/1.4 $50- $150
50mm f/1.7 $25 - $90
50mm f.2 $ $25 - $50

I have 7 different 50mm's. I would purchase the 1.7 or an f/2 to start. If it's what you like, then you can always sell it and upgrade.

I think the M's are as easy to use as the A's with the Auto Aperture once you learn how to use them. They're a ton of fun, cost a fraction of a new lens and put out just as good of a picture as the new ones. IMO. There is a lot of info on how to best use them in this forum.

Happy shooting.
04-18-2011, 07:07 PM   #45
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QuoteOriginally posted by glee46 Quote
There are more then just one 50mm for the Pentax. The most popular are usually these 3 and what you could expect the price range to be. 50mm f/1.4 $50- $150 50mm f/1.7 $25 - $90 50mm f.2 $ $25 - $50 I have 7 different 50mm's. I would purchase the 1.7 or an f/2 to start. If it's what you like, then you can always sell it and upgrade. I think the M's are as easy to use as the A's with the Auto Aperture once you learn how to use them. They're a ton of fun, cost a fraction of a new lens and put out just as good of a picture as the new ones. IMO. There is a lot of info on how to best use them in this forum. Happy shooting.

Thanks for the message.. What place do you recommend to get them used? I've been looking on ebay...
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