Metering mode on Manual lens with K-7

[kalpeshmodi]

I just got a used 50/f4 macro lens. While taking pic i encountered that metering of camera is not working with manual lens. Where as it works with all my af lens.
Are there any settings in camera with using manual lens.

Any suggestions and help ?

Thanks in advance.

 

[kuuan]

which lens is it, a Pentax 'A', 'M' or M42 lens ( with use of adapter )?

supposing it is an 'M' lens, in the menu set 'using aperture ring' to 'permitted, set to MF, use 'M' mode and press the 'green button' for metering ( better focusing when set to wide open for brightest viewfinder, then stop down, then press green button, then release )
--

Pentax *istDS / K-x + quite a few M42, mostly Takumar lenses, Minolta A2, Fuji F31fd
http://flickr.com/photos/kuuan/
http://www.pentaxphotogallery.com/andreasgriesmayr
http://www.youtube.com/profile?user=kuuan

 

[Raphael Mabo]

Metering works with lenses that has electrical contacts that tells the camera the aperture. Without knowing the aperture the camera can't calculate the shutter.

If you use a manual lens without those electrical contacts, then the K-7 has to measure the aperture.

First - allow use of aperture ring.
Second - set the K-7 to M-anual mode.

Third - press green button, this stops down the camera and allows for camera to measure the aperture and setting shutter speed.

Now you can take the image by pressing shutter halfway down.

Note - the first step is something you only have to do once, the K--7 will remember the setting.

Note 2 - do have the camera set to manual focus (MF) when using a manual focus lens.

--
Take care
Raphael
http://www.flickr.com/photos/raphaelmabo/

 

[LKeithR]

As others have said, the green button makes metering really simple but you should be aware that the metering will probably be off by 1 or even 2 stops sometimes--at least this is the case with my K20; I'm not sure about the K7. It's still easy to compensate for; take a test shot, read the histogram and adjust accordingly. Once you get to know how a particular lens behaves on your camera you'll find that making the necessary adjustments become automatic...
--
Keith...

Look at the picture, not the pixels...
http://www.lkeithr.zenfolio.com

 

[kalpeshmodi]

thanks everyone for help and suggestions.