PentaX D-FA645 25mm f/4

**Digitalis** · 01-28-2011, 05:09 PM

this probably belongs in the rumour forum due to the fact that it hasn't materialised in the marketplace just yet. But here is a look at the new Pentax D-FA 645 25mm f/4 [IF] SDM:

To my eyes it looks like a well designed pre-production mock up lens...but considering they have gone through all this effort I am sure it won't be much longer before this lens appears on the market. It will be the widest medium format digital lens wider than any lens from Phase one, Mamiya or Hasselblad which all have 28mm lenses as their widest focal lengths.

there is an article on it on PhotoRumors, if you haven't already gathered that from the pic I used.

Last edited by Digitalis; 01-28-2011 at 05:45 PM. Reason: correction of title capitalisation

einstrigger · 01-28-2011, 09:03 PM

I'm not familiar with medium format, but what's that compartment that slides out?

-Linus- · 01-28-2011, 09:21 PM

It's for filters.

The little wheel is for rotating a polarization filter.

-Linus-

ogl · 01-29-2011, 01:09 AM

Originally posted by Digitalis

this probably belongs in the rumour forum due to the fact that it hasn't materialised in the marketplace just yet. But here is a look at the new Pentax D-FA 645 25mm f/4 [IF] SDM:

It's not a rumor and not mock-up lens. This lens will be shipped on March, 2011.

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, 19, 2010

Makten · 01-29-2011, 02:45 AM

Originally posted by Digitalis

It will be the widest medium format digital lens wider than any lens from Phase one, Mamiya or Hasselblad which all have 28mm lenses as their widest focal lengths.

Their cameras also offer larger sensors, so for those shooting digital the 25 might be less wide anyway.

lithos · 01-29-2011, 03:38 AM

Originally posted by -Linus-

It's for filters.

The little wheel is for rotating a polarization filter.

-Linus-

To expand, it's because you'd need some huge, 100mm+ filter to cover the front element without vignetting - probably even larger, since you'd have to mount it further the front to prevent it touching the front element. I wouldn't like to think about how much a 100mm polariser costs.

What's really interesting about that pic, though, is the Pentax-branded filter...

Maybe they'll bring back Cloudies!

RonHendriks1966 · 01-29-2011, 03:43 AM

Originally posted by lithos

What's really interesting about that pic, though, is the Pentax-branded filter...

Maybe they'll bring back Cloudies!

maybe this comes in a box, lens, pouch and a set of filters.

kenyee · 01-31-2011, 07:34 AM

Originally posted by lithos

To expand, it's because you'd need some huge, 100mm+ filter to cover the front element

Doesn't look like you'll be able to cover the front element w/ a UV filter too...looks pretty bulbous to me...

**Digitalis** · 01-31-2011, 01:32 PM

Originally posted by Makten

heir cameras also offer larger sensors, so for those shooting digital the 25 might be less wide anyway.

quite right ,But pentax has the option of doing the same considering the lens has a D-FA not a DA designation. I think Pentax finally realised that a more future proof design was needed for this lens And I think it will be interesting to use a 25mm lens on full frame 645

Shuttershane · 01-31-2011, 06:35 PM

I really want to get this lens but I have a feeling it will be really pricey. Anyone got an estimate on the price?

VoltMan · 01-31-2011, 06:51 PM

Dealer here tells me ~ ¥270,000 street price but list higher at ~ ¥320,000 ... not sure what that means in U.S. pricing though....

Originally posted by Shuttershane

Anyone got an estimate on the price?

**lats** · 01-31-2011, 08:15 PM

Anyone know if this will be an aspherical lens?

Still great for Landscapes if it isn't, but for Architectural work it would be fantastic if it was.

I know it isn't a shift lens, but you don't always need a shift lens despite peoples perceptions.

MikeSeb · 01-31-2011, 08:35 PM

That street price works out to about $3300 US at current exchange rates.

Yikes.

VoltMan · 02-01-2011, 04:46 AM

I'm not sure about what that indicates for U.S. prices which seem to be lower, though its hard to tell given v. few seem to be listed new. Have a look at Yodobashi camera for example Pentax pricing on FA 645 lenses, and you'll find some of their pricing in the ridiculous range: yodobashi.com-FA 645.

Originally posted by MikeSeb

That street price works out to about $3300 US at current exchange rates.

**Digitalis** · 02-01-2011, 05:39 AM

Originally posted by lats

Anyone know if this will be an aspherical lens?

yes it will be, if you look closely on the lens barrel of the lens you will see AL - which signifies that the lens uses aspherical elements in it's design, how many and what quality?...I cannot say.

01-28-2011, 05:09 PM	#1
Digitalis Site Supporter Join Date: Mar 2009 Location: Melbourne, Victoria Photos: Gallery Posts: 11,694	Pentax D-FA645 25mm f/4 [IF] SDM this probably belongs in the rumour forum due to the fact that it hasn't materialised in the marketplace just yet. But here is a look at the new Pentax D-FA 645 25mm f/4 [IF] SDM: To my eyes it looks like a well designed pre-production mock up lens...but considering they have gone through all this effort I am sure it won't be much longer before this lens appears on the market. It will be the widest medium format digital lens wider than any lens from Phase one, Mamiya or Hasselblad which all have 28mm lenses as their widest focal lengths. there is an article on it on PhotoRumors, if you haven't already gathered that from the pic I used. Last edited by Digitalis; 01-28-2011 at 05:45 PM. Reason: correction of title capitalisation

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01-28-2011, 09:03 PM	#2
einstrigger Veteran Member Join Date: Dec 2009 Location: Sacramento, CA Photos: Gallery \| Albums Posts: 728	I'm not familiar with medium format, but what's that compartment that slides out?

01-28-2011, 09:21 PM	#3
-Linus- Senior Member Join Date: Dec 2009 Location: Münsterland Posts: 139	It's for filters. The little wheel is for rotating a polarization filter. -Linus-

01-29-2011, 01:09 AM	#4
ogl Banned Join Date: Dec 2007 Location: Sankt Peterburg Photos: Gallery \| Albums Posts: 8,382	Originally posted by Digitalis this probably belongs in the rumour forum due to the fact that it hasn't materialised in the marketplace just yet. But here is a look at the new Pentax D-FA 645 25mm f/4 [IF] SDM: It's not a rumor and not mock-up lens. This lens will be shipped on March, 2011. 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, 19, 2010

01-29-2011, 02:45 AM	#5
Makten Inactive Account Join Date: Dec 2010 Location: Stockholm Posts: 224	Originally posted by Digitalis It will be the widest medium format digital lens wider than any lens from Phase one, Mamiya or Hasselblad which all have 28mm lenses as their widest focal lengths. Their cameras also offer larger sensors, so for those shooting digital the 25 might be less wide anyway.

01-29-2011, 03:38 AM	#6
lithos Inactive Account Join Date: Oct 2007 Location: Brisbane, QLD, AUS Posts: 3,261	Originally posted by -Linus- It's for filters. The little wheel is for rotating a polarization filter. -Linus- To expand, it's because you'd need some huge, 100mm+ filter to cover the front element without vignetting - probably even larger, since you'd have to mount it further the front to prevent it touching the front element. I wouldn't like to think about how much a 100mm polariser costs. What's really interesting about that pic, though, is the Pentax-branded filter... Maybe they'll bring back Cloudies!

01-29-2011, 03:43 AM	#7
RonHendriks1966 Banned Join Date: Jan 2009 Photos: Gallery Posts: 9,675	Originally posted by lithos What's really interesting about that pic, though, is the Pentax-branded filter... Maybe they'll bring back Cloudies! maybe this comes in a box, lens, pouch and a set of filters.

01-31-2011, 07:34 AM	#8
kenyee Veteran Member Join Date: Mar 2007 Location: Boston, PRofMA Photos: Albums Posts: 3,026	Originally posted by lithos To expand, it's because you'd need some huge, 100mm+ filter to cover the front element Doesn't look like you'll be able to cover the front element w/ a UV filter too...looks pretty bulbous to me...

01-31-2011, 01:32 PM	#9
Digitalis Site Supporter Join Date: Mar 2009 Location: Melbourne, Victoria Photos: Gallery Posts: 11,694 Original Poster	Originally posted by Makten heir cameras also offer larger sensors, so for those shooting digital the 25 might be less wide anyway. quite right ,But pentax has the option of doing the same considering the lens has a D-FA not a DA designation. I think Pentax finally realised that a more future proof design was needed for this lens And I think it will be interesting to use a 25mm lens on full frame 645

01-31-2011, 06:35 PM	#10
Shuttershane Senior Member Join Date: Dec 2010 Photos: Gallery Posts: 164	I really want to get this lens but I have a feeling it will be really pricey. Anyone got an estimate on the price?

01-31-2011, 06:51 PM	#11
VoltMan Forum Member Join Date: Jan 2011 Location: Tokyo Posts: 88	Dealer here tells me ~ ¥270,000 street price but list higher at ~ ¥320,000 ... not sure what that means in U.S. pricing though.... Originally posted by Shuttershane Anyone got an estimate on the price?

01-31-2011, 08:15 PM	#12
lats Site Supporter Join Date: Oct 2009 Location: Living in Vancouver, BC, born in Melbourne Australia Photos: Albums Posts: 156	Anyone know if this will be an aspherical lens? Still great for Landscapes if it isn't, but for Architectural work it would be fantastic if it was. I know it isn't a shift lens, but you don't always need a shift lens despite peoples perceptions.

01-31-2011, 08:35 PM	#13
MikeSeb New Member Join Date: Dec 2010 Location: Louisville, Kentucky Posts: 13	That street price works out to about $3300 US at current exchange rates. Yikes.

02-01-2011, 04:46 AM	#14
VoltMan Forum Member Join Date: Jan 2011 Location: Tokyo Posts: 88	I'm not sure about what that indicates for U.S. prices which seem to be lower, though its hard to tell given v. few seem to be listed new. Have a look at Yodobashi camera for example Pentax pricing on FA 645 lenses, and you'll find some of their pricing in the ridiculous range: yodobashi.com-FA 645. Originally posted by MikeSeb That street price works out to about $3300 US at current exchange rates.

02-01-2011, 05:39 AM	#15
Digitalis Site Supporter Join Date: Mar 2009 Location: Melbourne, Victoria Photos: Gallery Posts: 11,694 Original Poster	Originally posted by lats Anyone know if this will be an aspherical lens? yes it will be, if you look closely on the lens barrel of the lens you will see AL - which signifies that the lens uses aspherical elements in it's design, how many and what quality?...I cannot say.