Rumor of Pentax D FA 645 25mm f/4

Noisychip · 01-28-2011, 09:00 AM

There's a rumor about a new 645D wide angle lens:

Pentax D FA 645 25mm f/4 lens (medium format) to be announced soon | Photo Rumors

Finally, a new rumor!

Hope this hasn't been posted before.

ogl · 01-28-2011, 09:06 AM

It's not rumor. Ned Bunnell said about 25/4 on September, 2010.

**Kammerer** · 01-28-2011, 09:14 AM

Originally posted by ogl

It's not rumor. Ned Bunnell said about 25/4 on September, 2010.

The lens itself is not a rumor. The details listed on Photo Rumors are.

And then there is that photo...

ogl · 01-28-2011, 09:23 AM

Originally posted by Kammerer

The lens itself is not a rumor. The details listed on Photo Rumors are.

And then there is that photo...

Looks cool for me.

built-in hood lens
built-in filter holder
weather proof
some kind of a special coating/lens element
aperture range: f/4 – f/32
12 lens elements in 8 groups
minimum focusing distance will be less than 0.5m
internal focus
96° angle of view
25mm in medium format is actually very wide - aprox. 20 mm in 35mm equivalent.

Last edited by ogl; 01-29-2011 at 01:04 AM.

Zebooka · 01-28-2011, 10:33 AM

Again, red SDM logo indicates that lens is SDM-Only (55/2.8 is too)

enoeske · 01-28-2011, 12:51 PM

Originally posted by Zebooka

Again, red SDM logo indicates that lens is SDM-Only (55/2.8 is too)

red...the color of danger and warning lights

zackspeed · 01-28-2011, 06:13 PM

Originally posted by ogl

It's not rumor. Ned Bunnell said about 25/4 on September, 2010.

HawaiianOnline · 01-28-2011, 06:50 PM

I wonder if i will be useable on the film 645s apart from manual focus only?

Zebooka · 01-28-2011, 11:39 PM

Originally posted by HawaiianOnline

I wonder if i will be useable on the film 645s apart from manual focus only?

We'll see.
I guess yes (it will cover film 645 frame)... in P and Tv modes.

ogl · 01-29-2011, 01:06 AM

Originally posted by zackspeed

The Online Photographer: An Interview with Ned Bunnell, President of Pentax USA

NB: We did announce at Photokina (although it might have been lost in the noise with other releases) that in addition to the new D FA 645 55mm which is shipping now, we’ll ship a 25mm ƒ/4 lens early next year.

November, 2010

RonHendriks1966 · 01-29-2011, 03:18 AM

Originally posted by ogl

The Online Photographer: An Interview with Ned Bunnell, President of Pentax USA

NB: We did announce at Photokina (although it might have been lost in the noise with other releases) that in addition to the new D FA 645 55mm which is shipping now, we’ll ship a 25mm ƒ/4 lens early next year.

November, 2010

Well at the stand from Pentax at the Photokina they where talking about a 28mm lens coming for 645.

The coating is probably the aero bright coating that is also on the K-mount DA*55mm/f1.4 lens. New nano-coating. Or are they making a new coating again?

What kind of filters to put in to that sleeve?

eurostar · 01-29-2011, 01:31 PM

What kind of filter? Mainly polarizer. The little wheel on the side of the drawer is used for turning the polarizer. There is an identical drawer on the 600/5,6 A*.

HawaiianOnline · 01-29-2011, 08:10 PM

Originally posted by Zebooka

We'll see.
I guess yes (it will cover film 645 frame)... in P and Tv modes.

Hopefully. My main concern is that they didn't sacrifice edge and corner sharpness on the film 645 frame and concentrate entirely on the portion that the 645D sees. Though if I do get a 645D (in the far far future after I've saved up enough pennies), I'm not sure if I'll still stick with my 645N. If I don't, then the film frame edge sharpness would be irrelevant for me.

benjikan · 01-30-2011, 08:15 AM

SDM??? (Slow Deteriorating Motor?) I hope they have improved the quality of their SDM Motors. I wouldn't want the same episode as what occurred with my 16-50 DA*

ogl · 01-30-2011, 09:13 AM

Originally posted by benjikan

SDM??? (Slow Deteriorating Motor?) I hope they have improved the quality of their SDM Motors. I wouldn't want the same episode as what occurred with my 16-50 DA*

645 DFA55/2.8 SDM is rather fast for MF lens.

01-28-2011, 09:00 AM	#1
Noisychip Senior Member Join Date: Mar 2008 Posts: 282	Rumor of Pentax D FA 645 25mm f/4 There's a rumor about a new 645D wide angle lens: Pentax D FA 645 25mm f/4 lens (medium format) to be announced soon \| Photo Rumors Finally, a new rumor! Hope this hasn't been posted before.

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01-28-2011, 09:06 AM	#2
ogl Banned Join Date: Dec 2007 Location: Sankt Peterburg Photos: Gallery \| Albums Posts: 8,382	It's not rumor. Ned Bunnell said about 25/4 on September, 2010.

01-28-2011, 09:14 AM	#3
Kammerer Site Supporter Join Date: Mar 2010 Location: Hampton Roads Photos: Albums Posts: 367	Originally posted by ogl It's not rumor. Ned Bunnell said about 25/4 on September, 2010. The lens itself is not a rumor. The details listed on Photo Rumors are. And then there is that photo...

01-28-2011, 09:23 AM	#4
ogl Banned Join Date: Dec 2007 Location: Sankt Peterburg Photos: Gallery \| Albums Posts: 8,382	Originally posted by Kammerer The lens itself is not a rumor. The details listed on Photo Rumors are. And then there is that photo... Looks cool for me. built-in hood lens built-in filter holder weather proof some kind of a special coating/lens element aperture range: f/4 – f/32 12 lens elements in 8 groups minimum focusing distance will be less than 0.5m internal focus 96° angle of view 25mm in medium format is actually very wide - aprox. 20 mm in 35mm equivalent. Last edited by ogl; 01-29-2011 at 01:04 AM.

01-28-2011, 10:33 AM	#5
Zebooka Veteran Member Join Date: May 2008 Location: Russia, Siberia, Novosibirsk Posts: 323	Again, red SDM logo indicates that lens is SDM-Only (55/2.8 is too)

01-28-2011, 12:51 PM	#6
enoeske Veteran Member Join Date: Jul 2009 Location: Surprise, Az Photos: Gallery Posts: 2,136	Originally posted by Zebooka Again, red SDM logo indicates that lens is SDM-Only (55/2.8 is too) red...the color of danger and warning lights

01-28-2011, 06:13 PM	#7
zackspeed Veteran Member Join Date: Mar 2010 Posts: 527	Originally posted by ogl It's not rumor. Ned Bunnell said about 25/4 on September, 2010.

01-28-2011, 06:50 PM	#8
HawaiianOnline Veteran Member Join Date: Jan 2007 Location: Hawaii Posts: 613	I wonder if i will be useable on the film 645s apart from manual focus only?

01-28-2011, 11:39 PM	#9
Zebooka Veteran Member Join Date: May 2008 Location: Russia, Siberia, Novosibirsk Posts: 323	Originally posted by HawaiianOnline I wonder if i will be useable on the film 645s apart from manual focus only? We'll see. I guess yes (it will cover film 645 frame)... in P and Tv modes.

01-29-2011, 01:06 AM	#10
ogl Banned Join Date: Dec 2007 Location: Sankt Peterburg Photos: Gallery \| Albums Posts: 8,382	Originally posted by zackspeed The Online Photographer: An Interview with Ned Bunnell, President of Pentax USA NB: We did announce at Photokina (although it might have been lost in the noise with other releases) that in addition to the new D FA 645 55mm which is shipping now, we’ll ship a 25mm ƒ/4 lens early next year. November, 2010

01-29-2011, 03:18 AM	#11
RonHendriks1966 Banned Join Date: Jan 2009 Photos: Gallery Posts: 9,675	Originally posted by ogl The Online Photographer: An Interview with Ned Bunnell, President of Pentax USA NB: We did announce at Photokina (although it might have been lost in the noise with other releases) that in addition to the new D FA 645 55mm which is shipping now, we’ll ship a 25mm ƒ/4 lens early next year. November, 2010 Well at the stand from Pentax at the Photokina they where talking about a 28mm lens coming for 645. The coating is probably the aero bright coating that is also on the K-mount DA*55mm/f1.4 lens. New nano-coating. Or are they making a new coating again? What kind of filters to put in to that sleeve?

01-29-2011, 01:31 PM	#12
eurostar Veteran Member Join Date: Dec 2006 Location: Albareto, Italy Photos: Gallery Posts: 819	What kind of filter? Mainly polarizer. The little wheel on the side of the drawer is used for turning the polarizer. There is an identical drawer on the 600/5,6 A*.

01-29-2011, 08:10 PM	#13
HawaiianOnline Veteran Member Join Date: Jan 2007 Location: Hawaii Posts: 613	Originally posted by Zebooka We'll see. I guess yes (it will cover film 645 frame)... in P and Tv modes. Hopefully. My main concern is that they didn't sacrifice edge and corner sharpness on the film 645 frame and concentrate entirely on the portion that the 645D sees. Though if I do get a 645D (in the far far future after I've saved up enough pennies), I'm not sure if I'll still stick with my 645N. If I don't, then the film frame edge sharpness would be irrelevant for me.

01-30-2011, 08:15 AM	#14
benjikan Veteran Member Join Date: Jan 2007 Location: Paris, France Photos: Gallery Posts: 4,308	SDM??? (Slow Deteriorating Motor?) I hope they have improved the quality of their SDM Motors. I wouldn't want the same episode as what occurred with my 16-50 DA*

01-30-2011, 09:13 AM	#15
ogl Banned Join Date: Dec 2007 Location: Sankt Peterburg Photos: Gallery \| Albums Posts: 8,382	Originally posted by benjikan SDM??? (Slow Deteriorating Motor?) I hope they have improved the quality of their SDM Motors. I wouldn't want the same episode as what occurred with my 16-50 DA* 645 DFA55/2.8 SDM is rather fast for MF lens.