Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
03-06-2015, 04:41 AM   #46
Pentaxian
mecrox's Avatar

Join Date: Apr 2009
Location: Oxford, UK
Photos: Gallery
Posts: 2,115
I enjoyed this interview which was a lot more relaxed and forthcoming than in the past. They are on a roll and it is nice to sense that. I was a bit puzzled by the distinction between the K and K-S lines, though. Most of what is on the K-S2 is mainstream these days - TS screen, wifi, etc. I wonder if the two lines will end up as one. The news about the success of the GR is very encouraging. I would very much like to get one (or a new model if one is coming out soon). Plus, they seem to have lined up their ducks in Asia (China which they say is booming, India and so forth) before the drop in sales in the West started to get really hairy.

03-06-2015, 07:38 AM   #47
mee
Pentaxian




Join Date: May 2010
Photos: Albums
Posts: 5,911
QuoteOriginally posted by RonHendriks1966 Quote
Much more then I thought. But I think the 645Z alreeds out sold the 645D in just One years then. It al comes to the price and the New cmos sensor.
Seems price vs size of sensor is a big part of it.. which is why I think the price on the FF body will be very attractive too (within the realm of FF bodies).
03-06-2015, 11:30 AM   #48
Site Supporter
stevebrot's Avatar

Join Date: Mar 2007
Location: Vancouver (USA)
Photos: Gallery | Albums
Posts: 27,424
I stand by my assertion. I would post the scans, but the scanner has trouble with a blank wall shot like that*. Under direct observation, there appears to be about 1.5 stops vignette at the corner wide open with the 50/1.8 relative to the 50/1.7. The vignette becomes less as the lens is stopped down. That does not mean the lens is not usable on a FF camera, but the vignette is not within historic standards for a lens of that type.

Various claims have been made regarding the DA 50/1.8 including one that it is simply a repackaged FA 50/1.7. I don't believe that is true. The FA 50/1.7 shares optical design with all Pentax 50/1.7 lenses and my DA 50/1.8, while a great lens, has different rendering characteristics than my M 50/1.7 or A 50/1.7.


Steve

* Vignette is evaluated using an evenly lit target and measuring the attenuation to the corners.
03-07-2015, 08:20 AM   #49
Junior Member
vboy's Avatar

Join Date: Sep 2012
Posts: 46
it is nice to know that the company is doing well...ti makes pentaxians happy as well...bravo and more power!

---------- Post added 03-07-15 at 05:25 PM ----------

yup,i couldnt even find a GR here in (GR) Greece,not even a theta or the WG-M1...

03-07-2015, 09:17 AM   #50
Senior Member




Join Date: Jan 2007
Location: Calgary, AB CA
Photos: Gallery
Posts: 292
QuoteOriginally posted by rawr Quote
I was happy to see in the interview that Ricoh is (at last) taking a serious interest in wedding photography
Me too!

I couldn't do WPPI this year (unavoidable), and I haven't shot my 645N enough to know what I want out of the lens roadmap, but when I looked at the K5 vs 645Z I didn't see any shortcomings of 645Z at all. The lower framerate and thinner DoF suits me fine for most of the days shooting; so it's really down to the glass. And instead of selecting 'equivalent' (duck!) lenses for the entire kit, I'd like to select what will emphasize MF by choosing specific glass.

And then choosing the rest of the kit based on FF
03-07-2015, 09:23 AM   #51
Pentaxian
aleonx3's Avatar

Join Date: Jul 2007
Location: Brampton, Ontario
Photos: Gallery | Albums
Posts: 3,888
@mee, do you have both DA 50f1.8 and M 50f1.7? can you compare the front/rear glass elements of both to see if there is any noticeable size difference? I know it is more to it than that, but that would be something more readily identifiable if not at all.
03-07-2015, 10:02 AM - 1 Like   #52
Pentaxian




Join Date: Sep 2011
Location: Nelson B.C.
Posts: 3,267
Great interview. I like it when these sales folks say the word profit. Not sales numbers, not market share. Profit.

The way I read it, the KS line is the fashion statement, throw against the wall to see what sticks. The K line, the 645 and the coming full frame line are tools for photographers.

I think ogl is right. The demand for their full frame offering will surprise them.
03-07-2015, 08:06 PM - 1 Like   #53
Pentaxian




Join Date: Jun 2009
Location: GMT +10
Photos: Albums
Posts: 10,828
QuoteOriginally posted by derekkite Quote
The demand for their full frame offering will surprise them.
Indeed it may. Then they will probably think: why didn't we do this years ago?

03-07-2015, 08:59 PM   #54
mee
Pentaxian




Join Date: May 2010
Photos: Albums
Posts: 5,911
QuoteOriginally posted by aleonx3 Quote
@mee, do you have both DA 50f1.8 and M 50f1.7? can you compare the front/rear glass elements of both to see if there is any noticeable size difference? I know it is more to it than that, but that would be something more readily identifiable if not at all.
That is an interesting idea.

Yes, I own both lenses. I put the rear glass 'back to back' and observed the DA's diameter is slightly less than the M's! Front element appears similar but that one is hard to check since the DA's design blocks checking. If I had a tape measure it would be far more accurate a test, but I do not have one of those (I have a lot of lenses but not a measly tape measure -- where is my priority here hehe).

That would probably answer why stevebrot is seeing vignetting at 1.8

That said I'd practically never use the DA50 f/1.8 lens at 1.8 anyways (even on a crop body) -- that lens shines stopped down to at least 2.8 (and further at 5.6 where it is incredibly incredibly sharp).
03-08-2015, 03:45 AM   #55
Senior Member




Join Date: Jul 2012
Location: Trondheim
Posts: 234
Rear element of DA 50/1.8 = 24mm
Rear element of K50/1.4 = 29mm


Tollrance of my measurement is estimated at +-1mm
03-08-2015, 04:50 AM   #56
Loyal Site Supporter
monochrome's Avatar

Join Date: Mar 2008
Location: Kirkwood (St. Louis) MO
Photos: Gallery | Albums
Posts: 20,423
QuoteOriginally posted by timcatn Quote
Rear element of DA 50/1.8 = 24mm
Rear element of K50/1.4 = 29mm


Tollrance of my measurement is estimated at +-1mm
Question:

Are you certain you measured all the glass or might there be a baffle in the DA50/1.8?
03-08-2015, 04:57 AM   #57
Site Supporter
Stavri's Avatar

Join Date: Aug 2014
Location: at a Bean & Leaf
Photos: Albums
Posts: 1,659
QuoteOriginally posted by timcatn Quote
Rear element of DA 50/1.8 = 24mm
Rear element of K50/1.4 = 29mm


Tolerance of my measurement is estimated at +-1mm

They lenses with different max apertures, you need to compare the rear elements of the M 50mm f1.7(or the -F/FA 50mm f1.7) with the Da 50mm f1.8.
03-08-2015, 05:58 AM   #58
Senior Member




Join Date: Jul 2012
Location: Trondheim
Posts: 234
QuoteOriginally posted by monochrome Quote
Question:

Are you certain you measured all the glass or might there be a baffle in the DA50/1.8?




I measured the inside of the locking ring.

---------- Post added 03-08-15 at 01:59 PM ----------

QuoteOriginally posted by Stavri Quote
They lenses with different max apertures, you need to compare the rear elements of the M 50mm f1.7(or the -F/FA 50mm f1.7) with the Da 50mm f1.8.
Im aware of thet, but i don't have a 50/1.7


Should it not be possible to calculate from the relative size difference?
03-08-2015, 06:29 AM   #59
Veteran Member
tomtor's Avatar

Join Date: Apr 2008
Location: Netherlands
Posts: 382
QuoteOriginally posted by timcatn Quote
I measured the inside of the locking ring.

---------- Post added 03-08-15 at 01:59 PM ----------


Im aware of thet, but i don't have a 50/1.7


Should it not be possible to calculate from the relative size difference?
My m50/1.7 is 25mm
03-08-2015, 06:36 AM   #60
Site Supporter
Stavri's Avatar

Join Date: Aug 2014
Location: at a Bean & Leaf
Photos: Albums
Posts: 1,659
QuoteOriginally posted by tomtor Quote
My m50/1.7 is 25mm
Show off!!!
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!
50mm, 645z, audience, circles, da, dslr, ff, frame, gentleman, gr, i-r interview, increase, interview, lenses, pentax news, pentax rumors, person, plan, ricoh, sales, time, units, wonder
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Interview with head of Ricoh Imaging JPT Pentax News and Rumors 53 10-06-2014 11:46 PM
PF Interview with Ricoh Imaging at Photokina 2014 PF Staff Homepage & Official Pentax News 10 09-17-2014 06:10 AM
Imaging Resource's interview with Ricoh Kunzite Pentax News and Rumors 141 03-21-2014 02:29 AM
An Interview with Ricoh/Pentax from Imaging Resourse unkipunki Pentax News and Rumors 2 03-15-2014 01:32 PM
Interview with Chief Sales & Marketing Officer / Ricoh Imaging Japan leonsroar Pentax News and Rumors 464 01-13-2014 01:42 PM



All times are GMT -7. The time now is 07:15 AM. | 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