Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
03-30-2015, 02:38 PM   #361
Veteran Member




Join Date: Jun 2009
Location: Melbourne
Posts: 339
QuoteOriginally posted by goubejp Quote
You may see that the glass cut is also painted with dark paint, so you can't guess the material just by the aspect of the material.
A DC motor would be visible and there would be a gear mechanism visible.
Also see that the internal ring seems directly coupled with the focusing ring. A spacer ring would not touch the focusing ring
The glass is not painted, it just has a Matt appearance due the roughened cut surface. Neither is anything else painted. Look at other sectioned lenses to see how they look. A dc motor would only be visible if it was either directly in the cutting plane or not far away. It could be in the section that was removed, or hidden behind some components. Again look at other sdm/DC lens cutaways by pentax, often you can't see the motor either.

I know people want to believe that there is a ring motor in these lenses, but look at the facts which show no evidence of there being one. Asahi mans speculation does not make it a fact, especially since there's no evidence a ring motor is used. Nor does pentax claim they have developed or used unique induction ring motor.

03-30-2015, 02:59 PM   #362
Senior Member




Join Date: Oct 2013
Photos: Albums
Posts: 289
Wait a couple of days,than i have the facts about the motordrive.
Best regards
03-30-2015, 03:43 PM   #363
Veteran Member




Join Date: Jun 2009
Location: Melbourne
Posts: 339
Great, thanks! if you can show any photos that would be a bonus

QuoteOriginally posted by asahi man Quote
Wait a couple of days,than i have the facts about the motordrive.
Best regards
03-30-2015, 04:21 PM   #364
Pentaxian
dane.dawg's Avatar

Join Date: Aug 2011
Location: B.C.
Photos: Gallery
Posts: 1,433
Asahi man is rarely wrong about pentax products.

03-30-2015, 10:06 PM   #365
Pentaxian
thibs's Avatar

Join Date: Jun 2007
Location: Belgium
Photos: Albums
Posts: 5,206
QuoteOriginally posted by dane.dawg Quote
Asahi man is rarely wrong about pentax products.
Indeed but still want to know
03-31-2015, 02:33 AM   #366
Senior Member




Join Date: Feb 2015
Posts: 238
Thanks for these first pictures kenspro ! The light was really bad though, and it's hard to say something on the sharpness. As said before, it would be great if you could shoot some birds / mammals in a sunny day !

I saw on the 70-200 topic that you also have the DA* 300, can you tell how does the 150-450 performs compared to it (IQ-wise) ?
03-31-2015, 02:41 AM   #367
Site Supporter
kenspo's Avatar

Join Date: Mar 2014
Location: Oslo
Posts: 1,900
QuoteOriginally posted by timautin Quote
Thanks for these first pictures kenspro ! The light was really bad though, and it's hard to say something on the sharpness. As said before, it would be great if you could shoot some birds / mammals in a sunny day !

I saw on the 70-200 topic that you also have the DA* 300, can you tell how does the 150-450 performs compared to it (IQ-wise) ?
Hehe..When i have the time, i will i have 4 days of Black Metal festival to work on in the days to come! Ricoh gave me these lenses to test for my own sake, but i want to share what i find out.

The 150-450 seems faster. Will have to compare sharpness between them later.
03-31-2015, 05:07 AM   #368
Forum Member




Join Date: Jan 2015
Posts: 77
Any chance to test the focusing with fast moving subjects coming at you (like planes)?
And far away subjects (like barely filling the focus points)?

These would test not only the speed, but also accuracy and optical qualities.

03-31-2015, 05:19 AM   #369
Site Supporter
kenspo's Avatar

Join Date: Mar 2014
Location: Oslo
Posts: 1,900
QuoteOriginally posted by dafbp Quote
Any chance to test the focusing with fast moving subjects coming at you (like planes)?
And far away subjects (like barely filling the focus points)?

These would test not only the speed, but also accuracy and optical qualities.
If i get the time, i will
03-31-2015, 07:03 AM   #370
Senior Member




Join Date: Feb 2015
Posts: 238
QuoteQuote:
Hehe..When i have the time, i will
QuoteQuote:
If i get the time, i will
Thanks
03-31-2015, 07:26 AM   #371
Forum Member




Join Date: Jun 2009
Location: Cairo West Virginia
Photos: Gallery
Posts: 71
QuoteOriginally posted by ak_kiwi Quote
Ricoh is between a rock and hard place with SDM and I'm sure you can work out why -
Can't "officially" say there was ever problem.
Can't "officially" say they have fixed it. ( Logic would say they have of course)
The fix - use a focus drive system in new lenses that is proven and has a more positive reaction in the market place.

That said - I personally would have no problems buying a new SDM lense today if it fitted my needs
i have had the SDM replaced twice in the 16-50 and the 60-250 since the original purchases and the last ones took and both were done under Ricoh. so whatever was the problem it seems to have been solved.
03-31-2015, 10:53 PM   #372
Forum Member




Join Date: Jan 2015
Posts: 77
QuoteOriginally posted by kenspo Quote
If i get the time, i will
Thanks.
For everything.
03-31-2015, 11:07 PM   #373
Site Supporter
Stavri's Avatar

Join Date: Aug 2014
Location: at a Bean & Leaf
Photos: Albums
Posts: 1,643
The Pentax brand is getting expensive.........
03-31-2015, 11:15 PM   #374
Loyal Site Supporter
redpit's Avatar

Join Date: Aug 2013
Location: Athens
Photos: Gallery | Albums
Posts: 643
QuoteOriginally posted by Stavri Quote
The Pentax brand is getting expensive.........
That is the ONLY sure thing about the "new" Pentax up to now! I can't wait to see if this characteristic is justified by the quality it provides...
03-31-2015, 11:39 PM   #375
Pentaxian




Join Date: Apr 2007
Location: Romania
Posts: 8,681
QuoteOriginally posted by Stavri Quote
The Pentax brand is getting expensive.........
The Pentax brand is getting better.
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!
1.4x, af, barrel, bigma, crop, da*300, dc, focus, grass, hd, image quality, iq, kg, lens, lots, mm, motor, pentax, pentax news, pentax rumors, pentax-d fa 150-450mm, position, price, shots, tc, thread, tripod, wr
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
HD PENTAX-DA 16-85mm F3.5-5.6ED DC WR samples flomat Lens Sample Photo Archive 41 04-09-2016 01:38 PM
HD PENTAX-DA 16-85mm F3.5-5.6ED DC WR Adam Pentax News and Rumors 917 03-13-2015 12:59 PM
Three-part review of HD Pentax 16-85mm F3.5-5.6ED DC WR (Japanese) odyseuss Pentax SLR Lens Discussion 94 12-01-2014 10:44 AM
First Look Video: HD PENTAX DA 645 28-45mm F4.5 ED AW SR Thomasbrowphoto Pentax Medium Format 10 08-06-2014 06:37 PM
HD PENTAX DA 645 28-45mm F4.5 ED AW SR Lens Review i83N Pentax News and Rumors 2 08-04-2014 07:38 PM



All times are GMT -7. The time now is 08:31 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