Hermanland

I finally got a DSLR specially for my M42 and PK lens collection.  It is a Pentax ist DS2 which is basically a Pentax ist DS with bigger LCD and newer firmware.  It may sounds funny to buy a DSLR which was made four years ago, right   For M42, there is no coupling between the camera and the lens and therefore, I need to close the aperture manually for metering and taking foto.  All my PK lens are original K mount lens i.e. SMC Pentax-M or Ricoh XR.  Because Pentax ist DS2 is fitted with “crippled” KAF mount, the camera cannot tell what aperture the lens is set when metering.  The workaround method is to set the camera to full manual exposure mode and press the AE-lock button to stop down the lens and take a meter reading.  I call this a semi auto stop down metering.  The workaround is not needed for KA or KAF lens.  When these lens working in A mode, the aperture can be controlled from the camera.  There is no KA or KAF lens in my collection yet and hence I cannot confirm whether they really work or not.  I prefer the original K lens because they are much cheaper and solidly metal built.