Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
01-06-2013, 09:47 PM   #1
New Member




Join Date: Jan 2013
Posts: 3
SMC Takumar 1:1.4/50 PROBLEM: Help :(

okay so, I've had this lens before. And I was sure you could switch the manual/auto button with the Spotmatic F. But I can't on this one. And it's doing something to the light meter in the F. When The lens isn't attached the light meter switch works fine and turns off in the down position, but when the SMC is attached the light meter doesnt turn off, in the ON position the readings are a stop or two higher than when it's in the OFF position. I guess this is stop-down metering or something. But the lens is stuck in Auto and can't budge. was wondering if it's brocken or I can fix it or whatever.
Thanks.

01-06-2013, 09:59 PM   #2
Pentaxian




Join Date: Oct 2011
Location: Savannah, GA
Posts: 4,989
QuoteOriginally posted by susfu Quote
okay so, I've had this lens before. And I was sure you could switch the manual/auto button with the Spotmatic F. But I can't on this one. And it's doing something to the light meter in the F. When The lens isn't attached the light meter switch works fine and turns off in the down position, but when the SMC is attached the light meter doesnt turn off, in the ON position the readings are a stop or two higher than when it's in the OFF position. I guess this is stop-down metering or something. But the lens is stuck in Auto and can't budge. was wondering if it's brocken or I can fix it or whatever.
Thanks.
There is a tiny pin that must be depressed for the auto/man switch to work. You can see it on the mount. When the lens is mounted on the camera or if the right kind of rear cap is on it when it is not, the switch should work. Can't help with the light meter...
01-06-2013, 10:05 PM   #3
Ole
Administrator
Ole's Avatar

Join Date: Sep 2006
Location: Copenhagen, Denmark
Photos: Gallery | Albums
Posts: 3,783
This lens/camera combo is meant to meter with the lens wide open. The pin vonBaloney mentions prevents the A/M switch to move from the A setting for that reason since the M setting would result in a false metering when the lens is stopped down.
01-06-2013, 10:27 PM   #4
New Member




Join Date: Jan 2013
Posts: 3
Original Poster
QuoteOriginally posted by Ole Quote
This lens/camera combo is meant to meter with the lens wide open. The pin vonBaloney mentions prevents the A/M switch to move from the A setting for that reason since the M setting would result in a false metering when the lens is stopped down.
Thanks alot!

01-06-2013, 10:31 PM   #5
New Member




Join Date: Jan 2013
Posts: 3
Original Poster
QuoteOriginally posted by Ole Quote
This lens/camera combo is meant to meter with the lens wide open. The pin vonBaloney mentions prevents the A/M switch to move from the A setting for that reason since the M setting would result in a false metering when the lens is stopped down.
If I used a different Takumar lens with my SPotmatic F, would it work normally then?
01-06-2013, 10:39 PM   #6
Ole
Administrator
Ole's Avatar

Join Date: Sep 2006
Location: Copenhagen, Denmark
Photos: Gallery | Albums
Posts: 3,783
Lenses without the pin would work like on a Spotmatic (no F), i.e. with stop-down metering. Lenses with a pin are metered when wide open.

Takumars with SMC in the name have the pin, almost all other Takumars (like Super Takumar or Super Multi Coated Takumar) do not have the pin, but there are exceptions.
01-06-2013, 10:43 PM   #7
Pentaxian




Join Date: Sep 2007
Location: Bay Village, Ohio USA
Posts: 1,026
QuoteOriginally posted by susfu Quote
If I used a different Takumar lens with my SPotmatic F, would it work normally then?
Your SMC Takumar ***IS*** working normally.

If you mean, would a non-SMC Takumar lens (such as an earlier Super-Takumar) allow the A-M switch to be set to M, when used on your Spotmatic F, the answer is yes. The Super Takumars lack the tiny pin that was mentioned earlier.

The downside is that the Super Takumar lenses can only meter in stop-down mode.

BTW, the meter on a Spotmatic F is ALWAYS ON. The use of a lens or body cap is essential when the camera is not in use. Without a cap, the battery will probably be drained the next time you wish to use the camera.

The difference between a Spotmatic, with a Super-Takumar lens, and a Spotmatic-F, with an SMC Takumar lens, is that the F can meter the scene with the lens wide open, while the Spotmatic must stop the lens down to the working aperture to correctly meter the scene. The switch on the side of the lens mount on a Spot-F only stops the lens down. If you are using an SMC lens, it is for depth of field preview. If you are using a Super-Tak, it is for stop-down metering.
Reply

Bookmarks
  • Submit Thread to Facebook Facebook
  • Submit Thread to Twitter Twitter
  • Submit Thread to Digg Digg
Tags - Make this thread easier to find by adding keywords to it!
lens, light, meter, pentax help, position, smc, smc takumar, switch
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
For Sale - Sold: Super Takumar 50/1.4 SMC Pentax-M 50/1.4 ddhytz Sold Items 2 10-01-2012 03:18 AM
SMC Pentax-A 50/1.2 vs. SMC Takumar 50/1.4 (Normal Lens Shootout Final) carpents Pentax SLR Lens Discussion 6 09-22-2007 05:13 AM
SMC Takumar 50/1.4 vs. Auto-Takumar 55/1.8 carpents Pentax SLR Lens Discussion 5 06-24-2007 07:55 PM



All times are GMT -7. The time now is 12:00 AM. | See also: NikonForums.com, part of our network of photo forums!
  • Red (Default)
  • Green
  • Gray
  • Dark
  • Dark Yellow
  • Dark Blue
  • Old Red
  • Old Green
  • Old Gray
  • Dial-Up Style
Hello! It's great to see you back on the forum! Have you considered joining the community?
register
Creating a FREE ACCOUNT takes under a minute, removes ads, and lets you post! [Dismiss]
Top