Think I bought a dud

shhhs
Posted 02/03/2010 - 13:32 Link
Hi ,,whilst bidding on a 50mm prime over the weekend I got carried away in a bidding frenzy on another lens thinking it would be ok on my K10d.
Its a sunagor mc pk mount.(cheap) I thought Id be able to use this manually. I think I thought wrong. Any advice or how to's would be helpful. Always have favoured the learn the hard way approach.
thoughton
Posted 02/03/2010 - 13:35 Link
If it really is a PK mount I don't see why it wouldn't fit. Has the lens already arrived?
Tim
AF - Pentax K5, Sigma 10-20/4-5.6, Tamron 17-50/2.8, Sigma 30/1.4, Sigma 70-200/2.8, Tamron 70-300/4-5.6
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Edited by thoughton: 02/03/2010 - 13:36
shhhs
Posted 02/03/2010 - 13:39 Link
yep it fits but camera dosent want to take shots light meter readings and f stop flashing no ,,,tried it on all setting av thro to manual
shhhs
Posted 02/03/2010 - 13:46 Link
Ill try that again in english sorry.. Lens fits camera ok. But on manual setting there are no light meter readings and f stop is flashing f---.
Have tried green button override was told that might help. Have tried on all other camera settings. av etc etc nothing doing.
Re already arriving about an hour beatifully packaged a good seller just the buyer is a bit dim.
JohnX
Posted 02/03/2010 - 13:49 Link
I did a quick search on ebay and found this lens, recently sold.

Sunagor 28-80mm f/3.5-4.5 macro zoom, Pentax PK, caps.

Item no.270534867338.

Is this it?
shhhs
Posted 02/03/2010 - 13:56 Link
no this is the item number ebay 280467134059
shhhs
Posted 02/03/2010 - 14:04 Link
Brilliant thanks very much..Question should be stickied I trawled through here trying to find this answer before I posted I knew someone must have answered it at some point.. Sorry to make you guys repeat ,, but you made this lady a happy bunny ...
Dangermouse
Posted 02/03/2010 - 14:06 - Helpful Comment Link
cardiff_gareth wrote:
It'll work, go into the menu and into custon settings and there is a setting there that sounds like 'use aperture ring - on/off' can't remember what is actually says, adjust that and come out of menu. Put camera into manual focus and also in M. Set lens wide open so you can see out of it. Then focus, press the green button and camera will work out exposure for you, if you stop the lens down then it'll darken up the viewfinder so its easier for now just shooting wide open so its easier to see and focus. If you do stop the lens down then the camera will work out the correct exposure for that Aperture value when you press the green button down. You can also leave the camera in autofocus but the camera will beep and you to tell you its in focus. If its not in focus it won't fire off the shutter. This can be a little hit and miss though.

Maybe this question could be stickied as it can be a regular question sometimes :
So long as the lens is a K mount (rather than an M42 with an adapter) it'll be held wide open and then released to the selected aperture in M mode. Pressing the green button (+/- button on K-m) stops the lens down to take a meter reading, after which you use the digital preview to check how accurate it is. You will probably find that at certain apertures you need to tweak the shutter speed as the camera's idea of the correct setting can be a bit out.

In Av mode the lens is just held at the widest aperture all the time, but the camera will meter and set shutter speed automatically.

I used to use the focussing beep but I found it distracting - the green hexagon focus indicator is much more accurate.
Matt

Shooting the Welsh Wilderness with K-m, KX, MX, ME Super and assorted lenses.
Edited by Dangermouse: 02/03/2010 - 14:07
shhhs
Posted 02/03/2010 - 14:18 Link
Once again thanks for the imfo now taking photos with my £10.50 fast lense couldnt be happier ..Cheers.
Mike-P
Posted 02/03/2010 - 14:24 Link
DOes anyone know why this setting has to be enabled .. infact why is it even in the menu at all?

Surely it could just be on and that's that.
stu49
Posted 02/03/2010 - 15:12 Link
Maybe it's to stop u accidentally taking shots if u only want to ever use the 'A' position !? Never Manual !!

Stu - K10D | DFA 100/2.8 Macro | DA 55-300 | AF-360FGZ |

So much to learn... So little time !
Mannesty
Posted 02/03/2010 - 15:28 Link
I was thinking that maybe lenses without an aperture ring might get upset but all mine work fine with that option set to 'permit'.
Peter E Smith - flickr Photostream
iceblinker
Posted 02/03/2010 - 15:32 Link
stu49 wrote:
Maybe it's to stop u accidentally taking shots if u only want to ever use the 'A' position !? Never Manual !!
I reckon that's what it's for too.
~Pete
Dangermouse
Posted 02/03/2010 - 17:34 Link
iceblinker wrote:
stu49 wrote:
Maybe it's to stop u accidentally taking shots if u only want to ever use the 'A' position !? Never Manual !!
I reckon that's what it's for too.
Most likely. It's very easy to accidentally take lenses out of "A" (done it myself a few times, usually while changing lenses) and there are still a few FA lenses in production with a proper aperture ring. Still a bit baffled though - it doesn't actually damage the camera if you use the lens set to anything other than A, you'll just be stuck in Av or M.
Matt

Shooting the Welsh Wilderness with K-m, KX, MX, ME Super and assorted lenses.
ariban
Posted 04/03/2010 - 11:18 Link
Mike-P wrote:
DOes anyone know why this setting has to be enabled .. infact why is it even in the menu at all?

Surely it could just be on and that's that.
Apparently, Pentax does not want beginners to make a hash of things. they also do need to sell the new lenses.
Arijit

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