Adapted lenses tested on the Q : the reference thread

hnikesch · 04-14-2013, 11:13 AM

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

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Last edited by hnikesch; 04-14-2013 at 12:19 PM.

**crewl1** · 04-14-2013, 02:33 PM

That 150 looks like a winner. Will it take the place if the 135 you've been using?

hnikesch · 04-14-2013, 04:20 PM

Originally posted by crewl1

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

**pearsaab** · 04-14-2013, 04:59 PM

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!

**pearsaab** · 04-14-2013, 05:03 PM

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!

**crewl1** · 04-14-2013, 05:16 PM

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

**pearsaab** · 04-14-2013, 05:23 PM

Originally posted by crewl1

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

Cynog Ap Brychan · 04-14-2013, 11:12 PM

Inspirational photographs, pearsaab!

**baro-nite** · 04-15-2013, 06:26 AM

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.

robtcorl · 04-15-2013, 06:54 AM - **1 Like**

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!)

robtcorl · 04-15-2013, 06:56 AM

Very nice shots baro-nite, especially the spider!

**pearsaab** · 04-15-2013, 07:59 AM

Originally posted by baro-nite

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

**pearsaab** · 04-15-2013, 07:59 AM

Originally posted by Cynog Ap Brychan

Inspirational photographs, pearsaab!

thanks!!!

Guakala · 04-15-2013, 08:44 AM - **1 Like**

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).

M.Zein · 04-15-2013, 09:31 AM

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 ?

04-14-2013, 04:59 PM	#454
pearsaab Otis Memorial Pentaxian Loyal Site Supporter Join Date: May 2011 Location: Richmond, Virginia USA Photos: Gallery \| Albums Posts: 2,900	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
pearsaab Otis Memorial Pentaxian Loyal Site Supporter Join Date: May 2011 Location: Richmond, Virginia USA Photos: Gallery \| Albums Posts: 2,900	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!

04-15-2013, 06:26 AM	#459
baro-nite Loyal Site Supporter Join Date: Aug 2011 Location: North Carolina, USA Photos: Gallery \| Albums Posts: 5,294	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, 08:44 AM - 1 Like	#464
Guakala Senior Member Join Date: Dec 2009 Location: Boston, MA Posts: 158	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).

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04-14-2013, 02:33 PM	#452
crewl1 Site Supporter Join Date: Jul 2010 Location: Los Angeles, CA Photos: Gallery \| Albums Posts: 9,807 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
hnikesch Veteran Member Join Date: May 2009 Location: Michigan, USA Photos: Albums Posts: 1,316	Originally posted by crewl1 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, 05:16 PM	#456
crewl1 Site Supporter Join Date: Jul 2010 Location: Los Angeles, CA Photos: Gallery \| Albums Posts: 9,807 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
pearsaab Otis Memorial Pentaxian Loyal Site Supporter Join Date: May 2011 Location: Richmond, Virginia USA Photos: Gallery \| Albums Posts: 2,900	Originally posted by crewl1 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
Cynog Ap Brychan Veteran Member Join Date: Sep 2012 Location: Gloucester Photos: Gallery Posts: 1,199	Inspirational photographs, pearsaab!

04-15-2013, 06:54 AM - 1 Like	#460
robtcorl Veteran Member Join Date: Feb 2011 Location: St Louis, MO Photos: Gallery Posts: 11,606	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
robtcorl Veteran Member Join Date: Feb 2011 Location: St Louis, MO Photos: Gallery Posts: 11,606	Very nice shots baro-nite, especially the spider!

04-15-2013, 07:59 AM	#462
pearsaab Otis Memorial Pentaxian Loyal Site Supporter Join Date: May 2011 Location: Richmond, Virginia USA Photos: Gallery \| Albums Posts: 2,900	Originally posted by baro-nite 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
pearsaab Otis Memorial Pentaxian Loyal Site Supporter Join Date: May 2011 Location: Richmond, Virginia USA Photos: Gallery \| Albums Posts: 2,900	Originally posted by Cynog Ap Brychan Inspirational photographs, pearsaab! thanks!!!

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