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02-13-2015, 07:12 AM   #1
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FF: Will there be an aperture / stop down coupler?

QuoteQuote:
PentaxForums: Do you plan to reintroduce the aperture coupler in the Pentax full-frame body so that legacy lenses can meter without having to stop down?

Pentax:I think itís important, but itís difficult because of the limited space.
So it appears to be still open?

NB:
Pentax says: The stop down coupler is important.

02-13-2015, 07:16 AM   #2
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QuoteOriginally posted by blende8 Quote
So it appears to be still open?
What surprises me is that the answer was: "I think it is important". Because there's never been a DSLR with an aperture coupler since the *ist D.
02-13-2015, 07:18 AM   #3
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Exactly.
They always made fun of us requesting it.
The upper Nikon models have it, too.
02-13-2015, 07:20 AM - 3 Likes   #4
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QuoteQuote:
PentaxForums: Do you plan to reintroduce the aperture coupler in the Pentax full-frame body so that legacy lenses can meter without having to stop down?

Pentax:I think itís important, but itís difficult because of the limited space.
QuoteOriginally posted by blende8 Quote
So it appears to be still open?
This is how one says "no" in Japanese.

02-13-2015, 07:45 AM   #5
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QuoteOriginally posted by cfraz Quote
This is how one says "no" in Japanese.
Exactly. Guys, face it: there may never be an aperture coupler - it's one of the few things they've done to keep at least the less-hardcore from not only using ancient glass. After all, they do need to sell new lenses.
02-13-2015, 07:47 AM   #6
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What exactly would an aperture/stop-down coupler do? Is it the same the green button does ? Or is it that a green button wouldn't be necessary one there is a coupler in place? If the FF will have a green button to stop down legacy lenses (K-,M-mounts and M42) then it'll be okay for me? Or am I understanding this wrong?
02-13-2015, 07:49 AM   #7
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QuoteOriginally posted by cfraz Quote
Quote:
PentaxForums: Do you plan to reintroduce the aperture coupler in the Pentax full-frame body so that legacy lenses can meter without having to stop down?

Pentax:I think it’s important, but it’s difficult because of the limited space.
Originally posted by blende8
So it appears to be still open?
QuoteOriginally posted by cfraz Quote
This is how one says "no" in Japanese.
  1. We can't do the aperture coupler and small
  2. But legacy-lens Pentax enthusiasts are important (especially in Japan)
  3. How about Green Button stop-down metering? - it is a 'solution'
Frankly, I believe a generous solution. They could have just punted.

Last edited by monochrome; 02-13-2015 at 08:10 AM.
02-13-2015, 07:55 AM - 1 Like   #8
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QuoteOriginally posted by cfraz Quote
This is how one says "no" in Japanese.
It's how one says "Not happening under any set of circumstances" in Japanese. The word "difficult" (muzukashii) is not the one you ever want to hear from a Japanese person. And if they say "a bit difficult" (chotto muzukashii) with some stumbling and stuttering that's even worse.

02-13-2015, 07:56 AM   #9
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QuoteOriginally posted by cfraz Quote
This is how one says "no" in Japanese.
+1

In Japanese business-speak, "I think that's a good idea" or "I think it's important" is a polite "no", a flat negative is a "hell, no".


EDIT: Everyone types faster than I do...
02-13-2015, 07:57 AM - 5 Likes   #10
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02-13-2015, 08:04 AM   #11
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As you turn the aperture ring on the lens, the camera body will know what value you've selected in real time and calculate exposure based on that rather than having to use the green button to stop down, meter, then open up again before shooting.
With or without an aperture lever, there is no way for a K mount body to stop down an m42 mount lens, so operation will be similar (A mode with constant metering through the glass).

QuoteOriginally posted by rullrich Quote
What exactly would an aperture/stop-down coupler do? Is it the same the green button does ? Or is it that a green button wouldn't be necessary one there is a coupler in place? If the FF will have a green button to stop down legacy lenses (K-,M-mounts and M42) then it'll be okay for me? Or am I understanding this wrong?
02-13-2015, 08:16 AM   #12
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I don't buy it. The coupler ring takes up no extra space, the K mount was designed with it in place back in 1975! The ME series of slrs were the smallest made & cost is probably pennies per unit.

It'd be an ironic shame for Pentax to put out a K2 FF DSLR to commemorate 40 years of K mount and have it crippled!!
02-13-2015, 08:23 AM   #13
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QuoteOriginally posted by digital029art Quote
I don't buy it. The coupler ring takes up no extra space, the K mount was designed with it in place back in 1975! The ME series of slrs were the smallest made & cost is probably pennies per unit.

It'd be an ironic shame for Pentax to put out a K2 FF DSLR to commemorate 40 years of K mount and have it crippled!!
Yes it does and with it a complete separate measuring system. It is no way trivial (but I still want it).
02-13-2015, 08:54 AM   #14
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QuoteOriginally posted by blende8 Quote
So it appears to be still open?

NB:
Pentax says: The stop down coupler is important.
I was surprised at the question, and even excited they addressed it. Right up to when he said "difficult". So, no it is not going to happen. I believe the reason was lack of space and I was surprised he even addressed a reason. That indicates there was a specific reason it was removed in the first place though it might not be the same reason it will not be put back in.
02-13-2015, 10:01 AM   #15
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QuoteOriginally posted by blende8 Quote
So it appears to be still open?

NB:
Pentax says: The stop down coupler is important.
They said NO. No any space...Am I right?
it’s difficult because of the limited space

It's important, but....MEANS NO.

---------- Post added 02-13-2015 at 10:05 AM ----------

QuoteOriginally posted by blende8 Quote
So it appears to be still open?

NB:
Pentax says: The stop down coupler is important.
No. The full phrase is different. Try to understand that Japanese mentality differs from European.

They need to sell more new lenses.

Last edited by ogl; 02-13-2015 at 10:07 AM.
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