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02-15-2014, 01:07 AM   #616
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SMC Pentax-DA 14mm F2.8 ED [IF]

I tested mounting my new DA 14mm F2.8 with my genuine Q-K adapter, despite it being pretty dumb range (clashes with Q lenses) for adapting such a lens. Though I must say that it surprised me with sharpness and CA as it's considered a weaker lens in the DA lineup.

F2.8



~F3.2



~F4



~F4.8



~F5.6



~F6.7 (DIffraction softness occurs)



~F8



~F22 (really soft due to diffraction)



02-15-2014, 07:23 PM   #617
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q with qk adapter sigma 500 with sigma 1.4x adapter



02-16-2014, 05:51 AM   #618
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QuoteOriginally posted by pearsaab Quote
q with qk adapter sigma 500 with sigma 1.4x adapter
Wow, amazing detail for such reach. I dare say there's a bit of motion blur in the head and wings; never a surprise with birds at 1/30s. What aperture setting on the adapter?
02-16-2014, 12:20 PM   #619
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QuoteOriginally posted by baro-nite Quote
Wow, amazing detail for such reach. I dare say there's a bit of motion blur in the head and wings; never a surprise with birds at 1/30s. What aperture setting on the adapter?
thanks...I usually set it at 0.5, 1 tops

02-16-2014, 07:00 PM   #620
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Birds with DA*300 & Q

Q with aperture control adapter,ISO 800,F4.5, sec,high winds & hard to get accurate focus,but not so bad for conditions
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02-18-2014, 06:41 AM   #621
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Sigma 50mm 2.8 EX Macro

Using a very cheap and nasty adaptor

With a bit of a bump in contrast in LR:




Similar shot on 'Bold Monochrome'




To give you an idea, thats the '10' from an Australian 10c piece; so pretty good I thought.
02-18-2014, 06:53 AM   #622
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QuoteOriginally posted by Lurch Quote
To give you an idea, thats the '10' from an Australian 10c piece; so pretty good I thought.
Looks excellent. Do you know the magnification for that shot?
02-18-2014, 07:00 AM   #623
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I honestly dont know; but it'd have to be close to 1:1

02-18-2014, 09:43 AM   #624
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Updated index, thanks for your contributions.
02-18-2014, 10:07 PM   #625
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If its worth anything to anyone; it actually make a good little set up. Because the lens is so light to begin with its no where near as unbalanced as some other lenses mounted to a Q
02-21-2014, 07:39 PM   #626
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Q + Sakar Auto MC 135mm 1:2.5, and Fotodiox MD-PQ adapter. I forgot to remove the lens cap before the pic. This lens has a MFD of 1.5m, and a macro ring that goes from 1:7 down to 1:4. Minolta MD mount. It is clear from the first example photo that my focusing technique using the screen in bright sunlight needs some work. The white focus peaking highlights looked like I had it spot on. The leaves in the second are OOF because there was quite a stiff breeze blowing, and they were whipping back and forth. I guess that could have affected the tree limb, too.

Tony





02-25-2014, 03:40 AM   #627
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LPL 75mm f3.5 Enlarger lens.

As with most enlarger lens this one has a 39mm mount. To adapt it I bonded a female M42 thread onto a D-mount / Q adapter to create a minimum length adapter. I then mounted a 16mm helicoid tube and mounted the lens on the front of it with another homemade adapter (39mm female to 42male). A proper 39/42 adapter and a 12-17mm helicoid are in the mail and will make infinity focus possible for shorter focal length enlarger lens. This 75mm lens appears to be uncoated and this is noticeable in use. The images here were taken without a lens hood. I think this lens has real potential for close up work. Images are taken at f5.6 ISO125
I saved as JPG , worked the colour curve and sharpened a little. I cut and pasted a section of the original unedited image into the bottom of the images to demonstrate the lack of contrast of the native image.
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02-25-2014, 04:06 AM   #628
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Travegar 50mm f3.5 Enlarger lens.

This lens came off a common old UPA Eastern Bloc suitcase enlarger from back in the 1970s-80s. It has an oddball mount thread (about 32mm). The lens has a little haze on it that has resisted cleaning so far. The images show this. It is not a high tech lens--- with 2 elements up front and only one at the back, but strangely it has a 12 leaved iris. I had to home build an adapter for it. To adapt it I bonded a female M42 thread onto a D-mount / Q adapter to create a minimum length adapter. I then mounted a 16mm helicoid tube and mounted the lens on the front of it with another homemade adapter. ( I still had the enlarger mount.)
The images are at f5.6 ISO125. Saved as JPG.
I colour curved the result and sharpened a little, but have also cut and pasted a section of the original image onto the result.
Overall I think this lens would be passable if I can remove the haze.
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02-25-2014, 12:12 PM   #629
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Very cool work with those enlarger lenses, you must post a pic of the adapter mod.
Thanks all for your contributions, index is now updated.
02-25-2014, 01:05 PM   #630
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QuoteOriginally posted by crewl1 Quote
Very cool work with those enlarger lenses, you must post a pic of the adapter mod.
Thanks all for your contributions, index is now updated.
Here is an exploded view photo of the setup to use enlarger lens. The need for the helicoid tube is to provide focussing as of course enlarger lens have no focus movement. So the issue is to get the arrangement short enuf to achieve infinity focus. That is easy enough with the 75mm lens and if fact it needs the short extension tube included. But the other 50mm lens I wish to use won't quite get to infinity so I am buying a short (12mm) Helicoid. The camera mount is a D mount / Q adapter with the female thread of an extension tube bonded to it. Having this short as possible is critical. The Travegar lens with its mount is in the foreground. Because of the way its adapted mount is recessed it achieves infinity on this set up.
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