Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
04-14-2013, 11:13 AM   #451
Pentaxian
hnikesch's Avatar

Join Date: May 2009
Location: Michigan, USA
Photos: Albums
Posts: 1,250
Pentax Super-Takumar 150mm f4

Surfing *bay the other day and found 2 interesting lenses, this like new 150mm for about $50 and an additional 135, I bid on both hoping I might get one, turned out I was the only bidder on both. Just received the first one the 150. All shots @ f5.6 using the Pentax adapter, ISO 125 and after some testing with the SR set @ 135?? (check out the learning curve thread) but it works. The PF'g is well under control for an old 42mm mount lens. Images sharpened, some contrast added and re-sized. This gets me up to 825mm in a very small pkg that is easier to hand hold than my ST 200. All shot through a window, it's still to cold out and raining.

Hans

https://www.pentaxforums.com/forums/pentax-q/220897-q-learning-curve.html

Attached Images
View Picture EXIF
PENTAX Q  Photo 
View Picture EXIF
PENTAX Q  Photo 
View Picture EXIF
PENTAX Q  Photo 

Last edited by hnikesch; 04-14-2013 at 12:19 PM.
04-14-2013, 02:33 PM   #452
Veteran Member
crewl1's Avatar

Join Date: Jul 2010
Location: Los Angeles, CA
Photos: Gallery | Albums
Posts: 9,796
Original Poster
That 150 looks like a winner. Will it take the place if the 135 you've been using?
04-14-2013, 04:20 PM   #453
Pentaxian
hnikesch's Avatar

Join Date: May 2009
Location: Michigan, USA
Photos: Albums
Posts: 1,250
QuoteOriginally posted by crewl1 Quote
That 150 looks like a winner. Will it take the place if the 135 you've been using?
It may but I have an additional 135 coming Monday, it's a Auto-Takumar 135mm F3.5 rated 9.7 for sharpness by this site. Hope it's a good copy, The M 135 I have is rated 8.7 and I have been happy with it but things can always be sharper.

Hans
04-14-2013, 04:59 PM   #454
Loyal Site Supporter




Join Date: May 2011
Location: Richmond, Virginia USA
Photos: Gallery | Albums
Posts: 2,642
q with sigma 500mm 4.5 ex setting 0.5 to 1

got lucky and found the wood duck this weekend...have been going all over town and he and his partner decided to show up in my little pond sat and sun...hope they come back...larry i had my husband look at the distance and he said it's about 140 feet for whatever that is worth ...men and their dimensions...no cropping on the pictures






IMGP1073
by pearsaab, on Flickr
IMGP1073 | Flickr - Photo Sharing!




IMGP1072
by pearsaab, on Flickr
IMGP1072 | Flickr - Photo Sharing!




IMGP1071
by pearsaab, on Flickr
IMGP1071 | Flickr - Photo Sharing!




IMGP1231
by pearsaab, on Flickr
IMGP1231 | Flickr - Photo Sharing!

04-14-2013, 05:03 PM   #455
Loyal Site Supporter




Join Date: May 2011
Location: Richmond, Virginia USA
Photos: Gallery | Albums
Posts: 2,642
pentax q with qk adapter and dfa100mm macro

i also played with my macro today and got some of the snail ...about the size of my fingernail..very small




IMGP1316
by pearsaab, on Flickr
IMGP1316 | Flickr - Photo Sharing!




IMGP1318
by pearsaab, on Flickr
IMGP1318 | Flickr - Photo Sharing!




IMGP1321
by pearsaab, on Flickr
IMGP1321 | Flickr - Photo Sharing!
04-14-2013, 05:16 PM   #456
Veteran Member
crewl1's Avatar

Join Date: Jul 2010
Location: Los Angeles, CA
Photos: Gallery | Albums
Posts: 9,796
Original Poster
Beautiful shots of the ducks and thanks for the distance info.
The helps to gauge the reach.
Excellent detail at .5 and 1 setting it looks like you have the 500mm all figured out.
The snail looks cool too with the dfa100
04-14-2013, 05:23 PM   #457
Loyal Site Supporter




Join Date: May 2011
Location: Richmond, Virginia USA
Photos: Gallery | Albums
Posts: 2,642
QuoteOriginally posted by crewl1 Quote
Beautiful shots of the ducks and thanks for the distance info.
The helps to gauge the reach.
Excellent detail at .5 and 1 setting it looks like you have the 500mm all figured out.
The snail looks cool too with the dfa100
thanks larry...i will try to pay more attention in the future on the distance
04-14-2013, 11:12 PM   #458
Site Supporter
Cynog Ap Brychan's Avatar

Join Date: Sep 2012
Location: Gloucester
Photos: Gallery
Posts: 1,091
Inspirational photographs, pearsaab!

04-15-2013, 06:26 AM   #459
Loyal Site Supporter
baro-nite's Avatar

Join Date: Aug 2011
Location: North Carolina, USA
Photos: Gallery | Albums
Posts: 4,302
Sigma EX DG 70/2.8 macro

Pentax Adapter Q. All shots handheld (the macro shots were on a table and I was able to use that for support), available light. I didn't make note of the aperture settings, but from memory the first two would have been at setting 1.5 or 2 (i.e., f/4.5 or f/5.6) and the macro shots at setting 0.5 (i.e., f/3.5).


50% crop


Moderate crop


1:1 macro, 4 shots stacked in Zerene Stacker (PMax retouched from individual shots), uncropped
The pale yellow spot on the spider's head is an individual grain of pine pollen


Conclusions: certainly a good performer on the Q both as a telephoto and an extreme macro lens. Some CA but I have done no correction for it in the shots here, and it isn't bad. It's a fairly large and heavy lens for handheld use on the Q. For macro keep in mind that at high magnifications the effective f-number goes up; a good approximation is f(effective) = f(nominal) * (1+magnification), so at 1:1 the f-number is effectively doubled. Which is to say, for shots above 1:2 or so, use a smaller f-number.

Edit: Some testing in a studio setup (tripod, SR off) shows f/4 (setting 1.0 on the Pentax Adapter Q) as the best aperture at 1:1 magnification.

Last edited by baro-nite; 04-15-2013 at 09:55 AM. Reason: Added note from additional testing
04-15-2013, 06:54 AM - 1 Like   #460
Site Supporter
robtcorl's Avatar

Join Date: Feb 2011
Location: St Louis, MO
Photos: Gallery
Posts: 3,321
Hans,
Looks like you have a winner on your hands with the 150!

Amy,
Are you sure those are wood ducks?
Terrific Aix sponsa and snail shots!!
(man I love Google!)
04-15-2013, 06:56 AM   #461
Site Supporter
robtcorl's Avatar

Join Date: Feb 2011
Location: St Louis, MO
Photos: Gallery
Posts: 3,321
Very nice shots baro-nite, especially the spider!
04-15-2013, 07:59 AM   #462
Loyal Site Supporter




Join Date: May 2011
Location: Richmond, Virginia USA
Photos: Gallery | Albums
Posts: 2,642
QuoteOriginally posted by baro-nite Quote
Pentax Adapter Q. All shots handheld (the macro shots were on a table and I was able to use that for support), available light. I didn't make note of the aperture settings, but from memory the first two would have been at setting 1.5 or 2 (i.e., f/4.5 or f/5.6) and the macro shots at setting 0.5 (i.e., f/3.5).


50% crop


Moderate crop


1:1 macro, 4 shots stacked in Zerene Stacker (PMax retouched from individual shots), uncropped
The pale yellow spot on the spider's head is an individual grain of pine pollen


Conclusions: certainly a good performer on the Q both as a telephoto and an extreme macro lens. Some CA but I have done no correction for it in the shots here, and it isn't bad. It's a fairly large and heavy lens for handheld use on the Q. For macro keep in mind that at high magnifications the effective f-number goes up; a good approximation is f(effective) = f(nominal) * (1+magnification), so at 1:1 the f-number is effectively doubled. Which is to say, for shots above 1:2 or so, use a smaller f-number.
great shots baronight
04-15-2013, 07:59 AM   #463
Loyal Site Supporter




Join Date: May 2011
Location: Richmond, Virginia USA
Photos: Gallery | Albums
Posts: 2,642
QuoteOriginally posted by Cynog Ap Brychan Quote
Inspirational photographs, pearsaab!
thanks!!!
04-15-2013, 08:44 AM - 1 Like   #464
Senior Member
Guakala's Avatar

Join Date: Dec 2009
Location: Boston, MA
Posts: 147
Pentax DA 50-200mm

All shots were at 200mm using the Fotodiox adapter with built-in aperture ring (wish I had the OEM ). Wide open the lens is not very good, images are too soft and with some chromatic aberration. Once stopped down a bit the images get much sharper and the CA will be almost all gone.

Here are some samples with no post processing aside from a bit of exposure correction on maybe two shots.











I'm sure even better results could be achieved with a better tripod... But overall I recommend this lens on the Q if you'd like to try birding (or voyeurism).

04-15-2013, 09:31 AM   #465
Forum Member
M.Zein's Avatar

Join Date: Apr 2013
Posts: 55
Beautiful shots Guakala
Is it possible to change the focal length on the lens without manipulating inputs on the q (or resetting parameters) and still have decent IQ ?
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!
200mm, 50mm, adapter, auto, camera, f1.8, f2.8, flickr, focus, hawk, infinity, lens, macro, mirrorless, pentax, pentax q, pentax q10, pentax q7, q-s1, q10, q7, shot, shots, smc
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Has anyone tried Canon lenses on the Q/Q10? NeilGratton Pentax Q 14 05-31-2013 09:03 AM
Ideas on diffusing the onboard flash of the Q? Tonto Pentax Q 28 05-19-2013 11:46 AM
Pentax Q lenses tested by Photozone Mistral75 Pentax Q 9 11-16-2011 12:11 PM
Dumb Question: Adapted Leica lenses on film bodies? Why not??? DanielT74 Pentax SLR Lens Discussion 10 10-26-2011 12:05 AM
Could Pentax sell you on the Q if they had better lenses? devorama Pentax Compact Cameras 17 06-29-2011 09:34 PM



All times are GMT -7. The time now is 11:56 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