[ppohja]

No is the simple answer...

-Eric

Thanks, that's what I first concluded.. but then there were there 'but..' messages. Thanks for making it clear.

[gofour3]

I might be mistaken, but I think someone tried the new D FA* 50/1.4 on their LX and got it to shoot/meter wide open. So the D FA* 85/1.4 should do the same?

Phil.

[pres589]

I was planning to use the DA55 on a Super Program one of these days soon.

The PZ-1, and maybe the other PZ cameras, allow you to set the aperture using the now-common two-dial system. Probably also most of the MZ line allows you to set the aperture with on-body controls, though of varying levels of ease of use.

I don't think there is direct aperture control on the MZ's besides the MZ-S which is its own thing anyway.

[ppohja]

I might be mistaken, but I think someone tried the new D FA* 50/1.4 on their LX and got it to shoot/meter wide open. So the D FA* 85/1.4 should do the same?

That's my understanding that they default to wide open setting. That's why I asked about f2.8.

br,

[leekil]

I don't think there is direct aperture control on the MZ's besides the MZ-S which is its own thing anyway.

There are 3 types of MZ cameras:

1) The MZ-S, which we know about

2) The MZ-3 and MZ-5 style, where they have basically traditional shutter speed and aperture controls like the bayonet cameras introduced in the 70's (and were previously on the screw-mount cameras before that)

3) The MZ-6 and MZ-10 style, where you can set the shutter speed by pushing the switch that is around the shutter button, and you can set the aperture by pushing the Av button while manipulating that same switch. The *ist has similar controls.

So #3 would let you do full manual with these lenses, where #1 lets you control the aperture directly in AV mode, and #2 only allows it to be set by an automatic mode.

---------- Post added 08-05-20 at 05:48 PM ----------

And I think some of the MZs also have a different control that is like a wheel, but it doesn't spin, that you use rather than a switch around the shutter.

[TwoUptons]

There are 3 types of MZ cameras:

1) The MZ-S, which we know about

2) The MZ-3 and MZ-5 style, where they have basically traditional shutter speed and aperture controls like the bayonet cameras introduced in the 70's (and were previously on the screw-mount cameras before that)

3) The MZ-6 and MZ-10 style, where you can set the shutter speed by pushing the switch that is around the shutter button, and you can set the aperture by pushing the Av button while manipulating that same switch. The *ist has similar controls.

So #3 would let you do full manual with these lenses, where #1 lets you control the aperture directly in AV mode, and #2 only allows it to be set by an automatic mode.

---------- Post added 08-05-20 at 05:48 PM ----------

And I think some of the MZs also have a different control that is like a wheel, but it doesn't spin, that you use rather than a switch around the shutter.

#3 will not let you use the D FA*50 or the D FA*85 in full manual mode.
The film cameras do not have a way to actuate the aperture in those lenses -- they are electronic like a Canon EF lens...

And it's a distinct phenomenon from the "no aperture ring" on FA J lenses, DA lenses, and the like.
That has to do with communicating with the lens to meter...

The new D FA* lenses will work fine wide open at f1.4, but not at any other aperture on a film camera.

This might be handy here... it's from 2018, but the D FA* 50mm f1.4 is on there, and the 85 should be the same...
https://www.mosphotos.com/PentaxLensCompatibility.html

-Eric

[leekil]

#3 will not let you use the D FA*50 or the D FA*85 in full manual mode.

Absolutely, I'm only talking about the "no aperture ring" KAF2 (? KAF3?) lenses.

[stevebrot]

Yesterday I bought the D FA 85mm lens. Is there a single film camera body which I could be shooting at f2.8 ?

To echo the above...no, as in no film camera offers in-lens aperture motor support or control protocol for such.


Steve

[stevebrot]

That's my understanding that they default to wide open setting. That's why I asked about f2.8.

br,

Then it would be f/1.4 with the new D FA* 85mm.


Steve

[monochrome]

Okey, thanks.

Well, who anyways buys 1.4 glass, only to stop it down?

f/1.4? Meh. K50/1.2 and A50/1.2 start coming into their own at f/2.8 and they’re sharp as a razor from f/5.6 to f/11.

And boy are they easy to focus On a K-1.

[pres589]

#3 will not let you use the D FA*50 or the D FA*85 in full manual mode.
The film cameras do not have a way to actuate the aperture in those lenses -- they are electronic like a Canon EF lens...

And it's a distinct phenomenon from the "no aperture ring" on FA J lenses, DA lenses, and the like.
That has to do with communicating with the lens to meter...

The new D FA* lenses will work fine wide open at f1.4, but not at any other aperture on a film camera.

This might be handy here... it's from 2018, but the D FA* 50mm f1.4 is on there, and the 85 should be the same...
The Pentax Camera Lens Compatibility Chart

-Eric

That's good information, thank-you for putting that together. Sounds somewhat fiddly. But doable at least if I wanted to use KAF3 and previous types of lenses.