[mattdm]

Interchangeable Lenses : Digital Cameras : Imaging Systems Division : PENTAX

I know it was too much to hope to see the DA★ 30mm back on the list. Oh well. Instead, there's an un-detailed 645 ultra-wide, plus a 55mm f/2.8 (which presumably will be the normal lens?).

Meanwhile, the DA★ 60-250 f/4 is still "Spring 2009" — good luck with that. And there's still the vague "DA Super Telephoto".

[k100d]

so what this is saying that we can expect at most 2 new 35mm lenses (60-250 and Super Tele) between now and the 645D launch in 2010

[Steelski]

Not really, How long did it take for them to get the 15mm limited to market?
they announced it not too long ago and it was available fairly quickly.

[RawheaD]

OK, so I know next to nothing about MF, but isn't 80mm considered the "normal" lens? I.e., an FOV equivalent of 50mm lens on FF/135 camera bodies?


If this 55/2,8 is going to be the "normal" lens, as opposed to a wide-angle (that's what, e.g., CZJ Flektogon 50, CZ Distagon 50, etc., are considered, no?), does that mean this is going to be like a "cropped" medium format? Kind of like what APS-C is to FF?


In which case, I must ask, what's the effin point?

[losecontrol]

Still this is good news...showing that pentax continue develope things while the market is like today...

I think it is a brave move.

More lenses to come surely!

[thibs]

OK, so I know next to nothing about MF, but isn't 80mm considered the "normal" lens? I.e., an FOV equivalent of 50mm lens on FF/135 camera bodies?


If this 55/2,8 is going to be the "normal" lens, as opposed to a wide-angle (that's what, e.g., CZJ Flektogon 50, CZ Distagon 50, etc., are considered, no?), does that mean this is going to be like a "cropped" medium format? Kind of like what APS-C is to FF?


In which case, I must ask, what's the effin point?

Yes it is cropped, it has always been but it still is way bigger than FF.
BTW, all other competitors (Mamiya & co) are cropped as well.
I think it is around 1.3x from base 645 area.

[falconeye]

Still this is good news...showing that pentax continue develope things while the market is like today...

Actually, it means that the people having a heart for the 645D project are still on board -- and never gave up...

[RawheaD]

Yes it is cropped, it has always been but it still is way bigger than FF.
BTW, all other competitors (Mamiya & co) are cropped as well.
I think it is around 1.3x from base 645 area.

Ah. OK. So let's see, if I remember correctly, 135 is about a 1.5x crop of 645? So I guess this 645D is more like the "APS-H" of MF?


I guess that means something. God knows I'd happily take an APS-H K30D :-)

[thibs]

Ah. OK. So let's see, if I remember correctly, 135 is about a 1.5x crop of 645? So I guess this 645D is more like the "APS-H" of MF?


I guess that means something. God knows I'd happily take an APS-H K30D :-)

Not quite... 24x36 has a diagonal of 4,33 centimeters.
Cropped 645 would be 5,4 centimeters.

In terms of surface (considering probable 45x30 sensor):

645D: 13,5 square centimeters
24x36: 8,4 square centimeters

Quite a difference, quite a number of pixels you can squeeze there

REmember that you multiply dimensions when calculating surface. It is almost two times as much area as FF 24x36 sensor.

[GoldenWreckedAngle]

I grow weary of maps - Show me a road.

[Alan 2]

645 film is 41.5 x 56
135 film is 24 x 36

The standard DMF has been 36 x 48, though one of the newer backs (I forget which one) is 41.5 x 56, and I think the new leica is 30 x 45. In case you're wondering 36 x 48 is twice the area of 135. It would be very unlikely that Pentax would move away from the 3/4 ratio of standard 645.

In my film days I shot Mamiya 645 and a 55mm lens was the equivalent of 34mm on 135. I'm not sure what the equivalent for a 55mm would be on a 36 x 48. Perhaps someone can figure out the ratio with the above numbers.

[bt*ist]

I grow weary of maps - Show me a road.

Well played, sir! That said, the super-telephoto might be interesting