Go Back   Steve's Digicams Forums > Digital SLR and Interchangeable Lens Cameras > Pentax / Samsung dSLR, K Mount Mirrorless

Reply
 
Thread Tools Search this Thread
Old Sep 21, 2008, 1:59 PM   #1
Senior Member
 
snooked's Avatar
 
Join Date: Apr 2007
Location: South Florida
Posts: 1,411
Default

K20D, DA* 300mm F4, w/Kenko 1.5x Teleconverter.

Ed
Attached Images
 
snooked is offline   Reply With Quote
Sponsored Links
Old Sep 21, 2008, 2:00 PM   #2
Senior Member
 
snooked's Avatar
 
Join Date: Apr 2007
Location: South Florida
Posts: 1,411
Default

Head Shot
Attached Images
 
snooked is offline   Reply With Quote
Old Sep 21, 2008, 2:28 PM   #3
Senior Member
 
Goldwinger's Avatar
 
Join Date: May 2008
Location: Winter Haven, Florida
Posts: 6,515
Default

Nice going Ed,
don't see any reason not to like that set up!
GW
:bye:
Goldwinger is offline   Reply With Quote
Old Sep 21, 2008, 6:27 PM   #4
Senior Member
 
danielchtong's Avatar
 
Join Date: Dec 2005
Posts: 2,888
Default

snooked wrote:
Quote:
K20D, DA* 300mm F4, w/Kenko 1.5x Teleconverter.

Ed
Beautiful. You got good shots of it.
BTW can you confirm if your Kenko 1.5x works with the SDM of DA300mm? Mine works 100% with DA200mm. It should but it is reassuring to know that it works not just on paper. Personally I think the new DA rear converter has any advantage over that of Kenko 1.5.

Daniel
danielchtong is offline   Reply With Quote
Old Sep 21, 2008, 6:47 PM   #5
Senior Member
 
snooked's Avatar
 
Join Date: Apr 2007
Location: South Florida
Posts: 1,411
Default

The converter works with SDM onthe DA* 300mm, but the focus is noticably slower tha without the converter. I will check out the Pentax version to see if it is any faster, when available.

Ed
snooked is offline   Reply With Quote
Old Sep 21, 2008, 7:32 PM   #6
Senior Member
 
danielchtong's Avatar
 
Join Date: Dec 2005
Posts: 2,888
Default

snooked wrote:
Quote:
The converter works with SDM on¬*the DA* 300mm, but the focus is noticably slower tha without the converter. I will check out the Pentax version to see if it is any faster, when available.

Ed

I believe so as my DA200mmF2.8 will be reduced by one stop. As DA300mm is F4, the TC effect (1 stop less) on dimishing the light would be more prominant,
The Kenko manual specifies that it should preferably be mated to prime lens of F2.8 or faster

Daniel
danielchtong is offline   Reply With Quote
Old Sep 21, 2008, 10:24 PM   #7
Senior Member
 
Rodney9's Avatar
 
Join Date: Nov 2006
Location: Yeronga, Brisbane, Queensland, Australia
Posts: 3,518
Default

Excellent shot, even more so with a TC.
Rodney9 is offline   Reply With Quote
Old Sep 22, 2008, 6:51 PM   #8
Senior Member
 
NonEntity1's Avatar
 
Join Date: Jul 2006
Location: Lake Placid Florida USA
Posts: 2,689
Default

Am I reading this right? Are you guys (Ed and Daniel) saying an old "A" series teleconverter will allow the lens body focusing to work for Pentax's newest lenses? That is pretty surprising! I must be misunderstanding here.

Tim
NonEntity1 is offline   Reply With Quote
Old Sep 22, 2008, 7:25 PM   #9
Senior Member
 
snooked's Avatar
 
Join Date: Apr 2007
Location: South Florida
Posts: 1,411
Default

My Teleconverter is a "Pz-AF 1.5X Teleplus SHQ" Kenko. The contacts for the SDM drive are clearly visible on eack side of the TC, on the inside rim.

Ed
snooked is offline   Reply With Quote
Old Sep 23, 2008, 12:04 PM   #10
Senior Member
 
danielchtong's Avatar
 
Join Date: Dec 2005
Posts: 2,888
Default

snooked wrote:
Quote:
My Teleconverter is a "Pz-AF 1.5X Teleplus SHQ" Kenko. The contacts for the SDM drive are clearly visible on eack side of the TC, on the inside rim.

Ed


NonEntity1 wrote:
Quote:
Am I reading this right?¬* Are you guys (Ed and Daniel) saying an old "A" series teleconverter will allow the lens body focusing to work for Pentax's newest lenses?¬* That is pretty surprising!¬* I must be misunderstanding here.

Tim
Tim

Both of mine and Ed's TC are "Pz-AF 1.5X Teleplus SHQ". For my DA*200mm, I can hardly see the slowing down of AF of the SDM at all

Daniel
danielchtong is offline   Reply With Quote
 
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -5. The time now is 10:42 AM.