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01-29-2010, 03:03 PM   #1
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Spotmatic F Meter

Okay...so I guess I need the idiot answer. When using a Spotmatic F with an SMC Takumar 55 and a super multi coated 28 do I push the little meter button thingy up to meter, or do I leave it alone. Why can't I figure it out?

01-29-2010, 03:23 PM   #2
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QuoteOriginally posted by dmccardle Quote
Okay...so I guess I need the idiot answer. When using a Spotmatic F with an SMC Takumar 55 and a super multi coated 28 do I push the little meter button thingy up to meter, or do I leave it alone. Why can't I figure it out?
On Spotmatic F you don't need to push the meter button for SMC Takumars, but you need to do it for earlier Takumar like Super Takumar.

You could check this by pointing the camera to areas with different light conditions to see if the needle moves.
01-29-2010, 03:25 PM   #3
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If your lens has that little square block on the rear of the lens then you leave the switch down. Hope this helps.
01-29-2010, 03:26 PM   #4
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Leave it alone. Your Spotmatic F has open-aperture-metering which works fine with SMC and Super-Multi-Coated lenses. They have a kind of hook which tells your Spotmatic F's meter which aperture you choose without closing the diaphragm. YOu have to push the switch only when you use older Super-Takumars or non-Pentax M42 lenses. (Some newer Super Taks like the 2/55 have the hook as well)

01-29-2010, 03:48 PM   #5
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QuoteOriginally posted by EricTn Quote
If your lens has that little square block on the rear of the lens then you leave the switch down. Hope this helps.
That is exactly what I needed. I assume that goes for "other than takumar" lenses as well? I am going to order a Jupiter-9 from ebay. Will I need to use the stop down lever with that lens?
01-29-2010, 03:54 PM   #6
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Yes. Only Pentax SMC or Super-Multi-Coated lenses have the square block (and some Super-Takumars). It is a kind of Pentax extension to the M 42 mount. With all other lenses you will have to use the switch to stop down the aperture.
01-29-2010, 03:59 PM   #7
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...and if you manage to get an ES adaptall-2 or Vivitar TX mount, you're also in business...
01-29-2010, 04:02 PM   #8
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thanks guys

01-29-2010, 05:07 PM   #9
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QuoteOriginally posted by Nesster Quote
...and if you manage to get an ES adaptall-2 or Vivitar TX mount, you're also in business...
Assuming you have an Adaptall-2 or TX mount lens

Steve
01-29-2010, 05:31 PM   #10
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QuoteOriginally posted by stevebrot Quote
Assuming you have an Adaptall-2 or TX mount lens

Steve
well...I do have an adaptall 2 lens. It had a contax mount on it. I ordered a screw mount for the lens, but I can't figure out how to get it to mount on the lens.
01-29-2010, 06:20 PM   #11
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QuoteOriginally posted by dmccardle Quote
well...I do have an adaptall 2 lens. It had a contax mount on it.
I ordered a screw mount for the lens, but I can't figure out how to get it to mount on the lens.
Full aperture metering with the SP-F can be performed only with the Adaptall ES mount.
Using the regular Pentax Praktica M42 screwmount stopped-down metering is required.
The ES mount is easily recognized by the small protruding gear on the outer edge.

Chris
01-29-2010, 06:21 PM   #12
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Click for a larger view of the instructions...

The adaptall ES mount says ES on it, and has a wee gear wheel on the outside:



Strange but true: the firefox spellchecker a) insists firefox be capitalized b) thinks Tamron should be spelled "Matron" or "Tampon"
02-02-2010, 02:57 PM   #13
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QuoteOriginally posted by Nesster Quote
...and if you manage to get an ES adaptall-2 or Vivitar TX mount, you're also in business...
There's one version of the adaptamatic Tamron lenses that will work IF the last version of the adaptamatic lenses are used with the correct adaptamatic m42 mount.
03-12-2010, 03:59 PM   #14
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okay...so i've gotten my Jupiter 9. after I meter (by pushing the meter switch up) do I shoot the picture? or do I press the switch back down then release the shutter? basically....Do I shoot with the switch up or the switch down?
03-12-2010, 05:35 PM   #15
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doesn't matter, the camera should automatically release the button when you trip the shutter. If it doesn't no big deal.
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