|
Forum: Film SLRs and Compact Film Cameras
07-22-2017, 09:31 AM
|
| |
I clicked through on your "Lenses" link. You have several M42 lenses and the camera body at hand. Put the camera in Av mode and set the lens A/M slider to the M position and see if the stop-down metering makes sense. I would do an exposure series something like this:- Well-lit blank wall (preferably indirect natural light)
- Establish reference exposure with your K-1 using a lens with the "A" contacts,* fixed ISO, Av mode, center-weighted metering, and f/5.6. record the shutter speed for reference
- Set the ZX-50 to the same ISO as the K-1 using Av mode and mount your SMC Tak 55/1.8 with A/M switch in the M position
- Starting at f/2, meter the blank wall and record the shutter speed
- Repeat for f/2.8, f/4, f/5.6, f/8, f/11, and f/16 (full-stop increments)
The shutter speed at f/5.6 should be close to that from the K-1 and the rest of the recorded shutter speeds should be in one-stop increments (i.e. response should be linear).
Steve
* A hand-held meter or a different, known good, camera may also be used as a reference. Do not use stop-down (green button) metering on the K-1 as a reference.
|
