Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
02-07-2011, 07:23 PM   #31
Site Supporter
harklee's Avatar

Join Date: Oct 2010
Location: Sunnyvale, California
Posts: 57
- Price in Japan will start around 400,000 (open price)
- Will produce 400 units a month
- Ultra-high resolution
- 19.5mm (converted to 35mm format) on 645d, 15.5mm on full-frame 645.
- Comes with 40.5mm circular polarizer and a normal filter (which will be in the lens when the polarizer is not in use)
- Exclusive Aero-bright coating based on nano-technology for better light transmission
- Super protect coating
- SDM, AW


More pics :
???????645D?????????????????PENTAX

Official samples available :
645D???????????????PENTAX

02-07-2011, 07:35 PM   #32
Veteran Member




Join Date: Oct 2008
Photos: Gallery
Posts: 351
Throw in importer/distributor costs, dealer costs, typical Aussie mark-up and GST .... guessing at least AUD$6K here in Australia if you want to buy through the authorised dealer network and get an Aussie warranty for it ........ ouch
02-07-2011, 07:51 PM   #33
Forum Member




Join Date: Jan 2011
Location: Tokyo
Posts: 83
List price now advertised (and orderable) in Japan ¥398,000. Depending on shop discount that makes the street price ¥320,000~¥360,000. Yodobashi.com- smc PENTAX-D FA645 25mmF4AL[IF] SDM AW [25mm/F4 645]
02-07-2011, 08:25 PM   #34
Pentaxian
Digitalis's Avatar

Join Date: Mar 2009
Location: Adelaide.
Posts: 8,796
Original Poster
I took a look at one of the samples, and there is quite a large amount of Purple/Green fringing at the corners but I suspect software like DxO 6.5 should be able to make short work of it. I am disappointed that one of the best samples are taken at ISO 400 and hampers any demonstration of the resolution this lens is able to achieve....but I suppose the use of f/11 has something to do with that, I also get the distinct impression that these are out-of-camera jpgs.

Considering it is compatible with Full frame 645 film cameras, is indicative that pentax will eventually make a full frame 645D in the future.


Last edited by Digitalis; 02-07-2011 at 08:30 PM.
02-07-2011, 08:48 PM   #35
Site Supporter
harklee's Avatar

Join Date: Oct 2010
Location: Sunnyvale, California
Posts: 57
Digitalis, the bottom two from the three samples taken with the new 25mm are at ISO 200, out-of-camera jpgs, sharpness 1 and 0. Given that, overall sharpness (including corners) looks great to me, the color fringing should be fixable with any RAW-converter. I hope the price comes down to 3-4k range soon.
02-07-2011, 10:05 PM   #37
Pentaxian
Digitalis's Avatar

Join Date: Mar 2009
Location: Adelaide.
Posts: 8,796
Original Poster
QuoteOriginally posted by harklee Quote
sharpness 1 and 0. Given that, overall sharpness (including corners) looks great to me
If that is indeed the case then I'll be eagerly awaiting RAW samples, After having seen prints from the 645D one does realise how hard it really is to judge sharpness even from full sized samples from the web.
02-08-2011, 10:22 AM   #38
Pentaxian
RonHendriks1966's Avatar

Join Date: Jan 2009
Photos: Gallery
Posts: 8,714
QuoteOriginally posted by harklee Quote
Will produce 400 units a month
Where did you reed that? That number looks a bit high to me. Maybe total lens production for 645 at the time.

02-08-2011, 10:47 AM   #39
Site Supporter
harklee's Avatar

Join Date: Oct 2010
Location: Sunnyvale, California
Posts: 57
QuoteOriginally posted by RonHendriks1966 Quote
Where did you reed that? That number looks a bit high to me. Maybe total lens production for 645 at the time.
???????????????????????smc PENTAX-D FA645 25mmF4AL[IF] SDM AW??????????????????????????????PENTAX

They say 400 units a month in the beginning, not sure if this means the production rate will change in time.
02-08-2011, 12:14 PM   #40
Pentaxian
RonHendriks1966's Avatar

Join Date: Jan 2009
Photos: Gallery
Posts: 8,714
QuoteOriginally posted by harklee Quote
???????????????????????smc PENTAX-D FA645 25mmF4AL[IF] SDM AW??????????????????????????????PENTAX

They say 400 units a month in the beginning, not sure if this means the production rate will change in time.
Thanks, that info wasn't on the english page.
02-09-2011, 06:28 AM   #41
Veteran Member
ghelary's Avatar

Join Date: Jul 2008
Location: Paris, France
Photos: Gallery
Posts: 617
Given the fact that the 645D is produced at about 500 units a month. 400 a month shall be plenty enough for 4000$ lens (even if this is the average price of last gen MF lenses)
02-09-2011, 11:58 AM   #42
Site Supporter




Join Date: Oct 2009
Location: Living in Vancouver, BC, born in Melbourne Australia
Photos: Albums
Posts: 156
QuoteOriginally posted by Makten Quote
Just because a lens features an aspherical element, it doesn't have to give low distortion. Just look at the 75/2.8 for Pentax 67.
Apologies. I meant to ask if it was to be a rectilinear lens. My bad.
02-09-2011, 05:27 PM   #43
Pentaxian
Digitalis's Avatar

Join Date: Mar 2009
Location: Adelaide.
Posts: 8,796
Original Poster
QuoteOriginally posted by lats Quote
I meant to ask if it was to be a rectilinear lens. My bad.
It is rectilinear, though distortion appears to be well under the visually obvious 1.3%

The use of an aspherical element helps improve aberrations such as astigmatism,coma and field curvature, Lens distortion is governed by the overall lens design. I wish they had used ED glass to help with the fringing - but that would have pushed the cost even higher. Although most aspherical wide angle lenses are not known for producing good bokeh effects, E.G, Nikkor 28mm f/1.4 though the Pentax FA31mm f/1.8 Limited manages to be an exception to this rule.
02-10-2011, 01:05 AM   #44
ogl
Pentaxian
ogl's Avatar

Join Date: Dec 2007
Location: Siberia
Photos: Gallery | Albums
Posts: 7,254
645D???????????????PENTAX

First samples. JPEG from In-camera raw converter.
02-10-2011, 02:10 AM   #45
Forum Member




Join Date: Jan 2011
Location: Tokyo
Posts: 83
Well I guess all I can say is they've certainly picked pretty good subjects to put it to test by looking in the extreme corners - no pixel peeping required. At least the fringing is consistent
Reply

Bookmarks
  • Submit Thread to Facebook Facebook
  • Submit Thread to Twitter Twitter
  • Submit Thread to Digg Digg
Tags - Make this thread easier to find by adding keywords to it!
25mm, camera, f/4, lens, medium format, pentax
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Rumor of Pentax D FA 645 25mm f/4 Noisychip Pentax News and Rumors 94 04-24-2011 02:41 PM
645D and FA645 lenses Pål Jensen Pentax Medium Format 17 03-21-2011 03:20 PM
Pentax 18-25mm Lens at MLB Night Game? Biro Pentax SLR Lens Discussion 7 06-08-2009 07:16 PM
Pentax FA 35mm f2 v DA 25mm f2.8 Ltd Macro Murphy2004 Pentax SLR Lens Discussion 15 11-20-2008 04:39 PM
For Sale - Sold: Zeiss ZK 25mm / f2.8 Pentax K KA dkreithen Sold Items 2 11-02-2008 07:48 AM



All times are GMT -7. The time now is 12:35 PM. | See also: NikonForums.com, CanonForums.com part of our network of photo forums!
  • Red (Default)
  • Green
  • Gray
  • Dark
  • Dark Yellow
  • Dark Blue
  • Old Red
  • Old Green
  • Old Gray
  • Dial-Up Style
Hello! It's great to see you back on the forum! Have you considered joining the community?
register
Creating a FREE ACCOUNT takes under a minute, removes ads, and lets you post! [Dismiss]
Top