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01-13-2015, 01:25 PM   #1
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Q Macro solution to work like 90mm on DSLR

On my DSLR and Sony NEX I like to use 80/90mm macro lenses.
Has anybody made experiences with high quality achromatic closeup- lenses for the 02 and 06 lenses?

It would be nice if you post what you have found for non-extreme macro photos.

01-13-2015, 02:15 PM   #2
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I use a Raynox 150 and its superb.....also if you can get an old set of binoculars, you can use the end element and glue it to a 40.5mm filter and it makes a fantastic close-up filter.....I'll post examples photos soon.
01-13-2015, 03:06 PM   #3
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Keep in mind that for either of the Q lenses, you are going to have to step up from 40.5 to at least 52mm to use the Raynox, which is not a trivial amount.

QuoteOriginally posted by SteveNunez Quote
I use a Raynox 150 and its superb.....also if you can get an old set of binoculars, you can use the end element and glue it to a 40.5mm filter and it makes a fantastic close-up filter.....I'll post examples photos soon.
01-13-2015, 03:26 PM   #4
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dcshooter~ it's just an adapter ring- no big deal, $2 item.

Here are some:
This is the 01 Prime lens with Raynox 150

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01-13-2015, 03:28 PM   #5
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Here is same lens cap but with 06 lens and Raynox:
...and apple stem..........you keep AutoFocus with this adapter!

---------- Post added 01-13-2015 at 05:44 PM ----------

http://www.amazon.com/gp/product/B0007KS7D0/ref=oh_aui_detailpage_o07_s00?ie=UTF8&psc=1

---------- Post added 01-13-2015 at 05:45 PM ----------

Amazon.com : Fotodiox Metal Step Up Ring, Anodized Black Metal 40.5mm-43mm 40.5-43 mm : Flash Adapter Rings : Camera & Photo
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01-13-2015, 09:55 PM   #6
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Not presented or processed for sharpest IQ but rather for FOV/perspective purposes. Here's using a PK-Q adapter with representative views with the SMC M 28/3.5, 50/1.7 and the Adaptall SP 90/2.8 macro (52BB) lenses.

Actual images much sharper than shown in this compressed comparison from FsIV. POF on silver eraser cap at subject distance of 18" from lens.

Observation: the wider the lens, the wider the range of excellent apertures. E.g., 28/3.5 good from f11-f4, 50/1.7 from f8-f4 and 90/2.8 from f8-f5.6.

Useful "rules of thumb (of knuckles?)" for predicting FOV/frame:
28mm = FOV frame 4 knuckles wide at arms' length, 50mm = 3 knuckles and 90mm = 1 knuckle
It's difficult to see here but good DOF for the 28 extends to about 8 cm behind the POF. Look for the blue cap in the background.

Since one of the primary faults of diopter close-up filters is the relatively uncorrected outer edges, using 49mm CU filters with 40.5-49mm step-up rings should produce fairly good results also.
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01-14-2015, 07:43 AM   #7
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Hi Steve,

the binocular-lenses sound good to me! They might be achromatic doublets and have diameters between 20 and 50mm. I'm shure to have one in my parts drawers and will give it a try.
In Germany we have an online-shop "Astromedia.eu" that sells achromats of given focal lenght for a reasonable price. The choice is not very big, but there are some lenses in the 30-40mm range.

Has anybody tried extension rings in combination with 01 / 02 / 06 lenses? To get the lenses working the electric cotacts would have to be led through the adapter. So it would be quite a bit of work for a DIY project. Is something comercially available?
01-14-2015, 08:22 AM   #8
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My comment was more meant to address the large amount of size it adds to the lens setup. At this point, why not adapt a 50mm SMC-M macro, take the nearly 300% extra reach over a "90mm equivalent," better baseline imaage quality over the Q zooms, and comparable price, and call it a day?


QuoteOriginally posted by SteveNunez Quote
dcshooter~ it's just an adapter ring- no big deal, $2 item.

Here are some:
This is the 01 Prime lens with Raynox 150


01-14-2015, 09:22 AM   #9
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QuoteOriginally posted by dcshooter Quote
why not adapt a 50mm SMC-M macro, take the nearly 300% extra reach over a "90mm equivalent," better baseline imaage quality over the Q zooms, and comparable price, and call it a day?
That's why I was playing with the SMC-M's. Many possibilities using existing lenses. Most M 28, 35 and 50mm lenses work very well.

The extra stand-off distance with the Q's ALMOST makes me not wish I hadn't sold my Adaptall SP 180/2.5

There is an AE extension ring set available for $90 USD -- search for "pentax Q extension ring".



I'd also note that a simple, compact bellows unit can serve as an adapter for ANY lens with a flange registration distance greater than the closed bellows plus 9.2mm if you can acquire or adapt a lens cap for mounting the lens and body -- ike this ST 105/2.8. The body mount here is a body cap with a hole in it epoxied into the rear plate. The full focus range from macro to infinity can be achieved -- just like a TLR or view camera with bellows focusing.
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