[Ole]

How do I use flash with M lenses on the *istD?

This method is for the *istD only. It does not work on the DS or DL.

Set the camera in "M" mode. Then set a shutterspeed of 1/150 or slower on the camera, and set the aperture you want to use on the aperture ring of the lens.

Press the shutter button.

That's it.

The *istD measures the flash light during exposure off the sensor and shuts off the flash when enough light has been received (TTL flash mode).

The lens will stop down to the aperture you selected during exposure.

This works with the built in flash as well as with external TTL capabable Pentax flashes like the AFZ360. I have not tested it with older Pentax TTL capable flashes.

Note: Don't press the green button. The green button with M lenses is for measuring the ambient light.

Note: Custom function "F stop other than A" must be set to "on".