[karaff]

Hi
First post in this forum.

Recently got my first DSLR, my Pentax k-5.

Sorry for my english, maybe not perfekt but I hope I can make myself understood.

Yesterday I got some lenses for a very good price, like the Pentax SMC 50mm f1.4 prime, works perfekt in A-mode.

Also i got this Tamron telezoom, but I can't control the apperture.

Camera says F-- and i set for aperture ring mode in menu, then i can ues this lens, but only with aperture fully open.

If lens is detatched from camera, I can set aperture manually with ring, but when i mount it opens fully, even in "AE" mode, this lens use an adaptor saying "For Pentax K.M."

I was thinking if I can set manual aperture control in camera ?

The other solution I see is to cut the pin on the lens that controls aperture, and use it fully manual.

Other solutions for this ?

/Magnus

[i_trax]

to be able to use all auto metering modes you need to get Adaptall2 P/KA adapter for your lens.
with Pentax K.M you need to :
go to MENU C/page4/27. change Using Aperture Ring to : 2 Permitted
then MENU Camera /page 5 / E-Dial Programming / page 2:
choose in M Green Button to : TvSHIFT
then search Stop Down Metering on this forum, there is lot of info about it available

[i_trax]

read this , similar problem:
https://www.pentaxforums.com/forums/pentax-k-30/194673-im-sure-im-missing-som...en-button.html

[karaff]

Thank's a lot !

Now its working perfekt, I could se differense in DOF so aperture is adjusting!

/Magnus