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07-25-2014, 10:59 PM   #1
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SMC DA 18-55mm AL WR reverse ring for K-30

What kind of reversal ring i need to use with the К-30 and the SMC DA 18-55mm AL WR? Is it even posible to do that. I want to turn it into macro lense, can it be done?

07-26-2014, 12:34 AM   #2
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I would not use this lens, has no aperture ring
I have 52 and 49mm reverse rings and use them with 50mm prime Pentax 1.4 or 1.7 M or K lenses, or older Takumar's with macro extension tubes
I purchased my reverse rings on e-bay, all made in China
07-26-2014, 12:40 AM   #3
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But apart from the lack оф aperture ring, it will work, right?
07-26-2014, 12:56 AM   #4
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Without an aperture ring you will not be able to stop down and will be stuck with a very shallow depth of field - which would likely be a problem with most subjects.

07-26-2014, 01:22 AM   #5
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I see, but if i want to try it, i need 52mm reversal ring, right?
07-26-2014, 01:45 AM   #6
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It will work but you'll only have shutter speed and ISO to set exposure manually by trial and error.
07-26-2014, 01:49 AM   #7
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Thanks for the answers! I'll try it, its just $10 for the reversal ring.

Cheers!
07-26-2014, 02:30 AM   #8
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AU$3.18 posted
PK 52mm Macro Reverse Adapter Ring FOR Pentax K PK Lens Mount K100D K200D FDE | eBay

07-26-2014, 05:28 AM   #9
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QuoteOriginally posted by kiwi_jono Quote
Without an aperture ring you will not be able to stop down and will be stuck with a very shallow depth of field - which would likely be a problem with most subjects.

Actually, the opposite is true, you won't be able to open the lens, the diaphragm is already closed all the way in an un-mounted lens (w/o a ring, that is). You'll have to shoot in manual mode, meter as you normally would in manual, and adjust your settings accordingly. Focus will be difficult due to dark viewfinder image. DOF is pretty shallow in macro anyway, paper thin with lens wide open.


Of course, that's just my opinion, I could be wrong.

Last edited by Al_Kahollick; 07-26-2014 at 05:46 AM.
07-26-2014, 03:45 PM   #10
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QuoteOriginally posted by Al_Kahollick Quote
Actually, the opposite is true, you won't be able to open the lens, the diaphragm is already closed all the way in an un-mounted lens (w/o a ring, that is). You'll have to shoot in manual mode, meter as you normally would in manual, and adjust your settings accordingly. Focus will be difficult due to dark viewfinder image. DOF is pretty shallow in macro anyway, paper thin with lens wide open.


Of course, that's just my opinion, I could be wrong.
You are not wrong - and I stand corrected! Must have been having a bad day.

With kit lens the aperture is pretty small when closed so the issue more around exposure time and diffraction ruining IQ.
07-26-2014, 06:50 PM   #11
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QuoteOriginally posted by kiwi_jono Quote
You are not wrong - and I stand corrected! Must have been having a bad day.

With kit lens the aperture is pretty small when closed so the issue more around exposure time and diffraction ruining IQ.
Ah, we've all been there a time or two at one point or another, the human condition!


Your point about exposure an IQ are spot on though, nice recovery
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