|
Forum: Pentax KP
07-17-2023, 05:05 AM
|
| |
Caught this pair halfway up a cliff as I was sailing by (KP w/55-300 PLM, f9.0,1/125 sec, ISO200, -.3EV)...
|
|
Forum: Pentax KP
07-18-2023, 02:35 PM
|
| |
Lake 22, Mountain Loop Highway, Washington. Lens 20-40mm limited.
|
|
Forum: Pentax KP
12-12-2021, 05:01 AM
|
| |
| |
|
Forum: Pentax KP
12-10-2021, 05:35 AM
|
| |
A few from Pitigliano, Grosseto province, Tuscany, shoot with the DA 16-85 (first three) and the SMC-M 28/3.5 (last three).
|
|
Forum: Pentax KP
02-21-2021, 12:03 PM
|
| |
| |
|
Forum: Pentax KP
02-20-2021, 10:03 AM
|
| |
| |
|
Forum: Pentax KP
02-01-2021, 02:02 AM
|
| |
With HD DA21Ltd
 |
|
Forum: Pentax KP
01-17-2021, 10:06 PM
|
| |
Went for a grungy, underexposed film look through a window here. Right after Christmas.
 IMGP1393-01 by Andrew Lossing, on Flickr
|
|
Forum: Pentax KP
01-03-2021, 03:18 PM
|
| |
| |
|
Forum: Pentax SLR Lens Discussion
05-28-2019, 08:17 AM
|
| |
| |
|
Forum: Pentax KP
04-20-2019, 04:06 PM
|
| |
those look great, It's a great combo; kp and plm.
|
|
Forum: Pentax KP
04-17-2019, 08:14 AM
|
| |
Photos taken May 2018 at Garvan Woodland Gardens in Hot Springs AR.
KP and Tamron Adaptall-2 SP 90mm f2.8 (72B)
|
|
Forum: Pentax SLR Lens Discussion
12-11-2018, 01:28 AM
|
| |
The spring on the aperture lever is typically a torsion spring with two long arms and a small 2-3 loop coil in the middle. The coil is typically held in place with washers and a screw but can be held in place simply by being sandwiched in between plates and notches. These are usually made from thin spring wire. The spring can be weakened from age, broken or simply disengaged from it's contact points. Or the aperture mechanism is jammed in some other manner. If you are mechanically minded you should be able to figure out how the spring should be seated. Further tear down of the mechanism would be needed to determine the problem if it isn't just the spring.
A typical torsion spring can be seen on the left of this Pentax 50mm f/2.0 (bottom of page):
Pentax 50mm repair 1
Or in this exploded parts diagram of the Pentax SMC A 50mm f/1.7 as part X37
http://www.pentax-manuals.com/manuals/service/smca5017.pdf
Password is "Pentax" (without quotes)
You might be able to have the lens professionally serviced. It will probably cost you more than the lens is worth. Obtaining parts would be a problem though a real pro could fabricate some parts - at a price.
Best options are to buy a working copy or attempt a DIY repair and buying a junked lens of the same model for parts if needed.
|
