Good morning everyone,
The other day, I was photographing birds in flight, with a manual lens (Pentax-M 200mm F4).
The camera settings were: Dial of M and continuous shooting, set to high.
ISO is set to 200 and the shutter speed was 1/2000s and diaphragm, fully open (F4).
All other settings that can lower the speed of continuous shooting (for example SR, NR reduction, lens correction, etc. etc. were disabled,).
I immediately noticed that the speed of continuous shooting was not as speed as it should be using an electronic lens type 18-135mm,
but reduced, about half (not 8.3 fps but 4 or 5 fps, to ear)
Sure it was the lens a little old and hard, I changed lens with a Pentax-A 50mm F/1.4 in excellent condition, and I did some tests...
1. Dial to AV and lens set to A:..........................................................Continuous shooting speed is ok
2. Dial to AV and lens set to manual diaphragm:...............................Continuous shooting speed is ok
3. Dial to M and lens set to A:............................................................Continuous shooting speed is ok
4. Dial to M and lens set to manual diaphragm:..........................Continuous shooting speed is reduced (as with the Pentax-M 200 mm)
Conclusion:
1. my 200mm is functioning well
2. with a manual lens and the camera set to manual, the Continuous shooting speed is not reached, and so I'm a bit disappointed
,
3. just put a piece of paper between the contacts of the camera, and a manual lens to reach the famous 8.3 fps (tested).
Maybe someone can do the same test and confirm whether it is bug or is the norm?
Camera: Pentax K-3
Thanks and Good day to all
Last edited by Frank the Matt; 01-17-2016 at 05:02 AM.