Recent Posts

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Baroque
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Dave - thats a name I havent seen since the strobist forum days!  Yes i'm ok with dissaembly/tear down of these lenses, I have a number of the 20mm f/3.5 AI already (still have one) but all of them aren't that sharp until you get f/8 and beyond and even then its just "ok" whereas direct comparison with the f/4 is sharper, even at f/4 and f/5.6 for both near and far.

https://whatdoineed2do.blogspot.com/2026/01/widely-regarded-nikkor-20mm-f4-ai.html

Pluton - thanks.  Roland's site also notes the 28mm ff/3.5 kit was 18$ but thats not a defnitie indicator.  if the K seller can do a good price i may just chance it.  The only reference I have is a factory AI ring on a 55mm f/3.5 Auto (I dont have the original aperture ring though) where the installed aperture ring just looks like the one of the 55mm f/3.5 AI although I know there's K variant and so not direclty comparable.
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Your Weekly Blog / Re: March 2026
« Last post by Fons Baerken on March 22, 2026, 08:25:48 »
The other day

willow weep

Zf  Voigtländer 35mm f/2


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Your Weekly Blog / Re: March 2026
« Last post by aerobat on March 22, 2026, 05:56:24 »
Lucerne pier - Z5ii & Voigtländer 28mm f/2.0 APO
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Are AI conversions for K lenses are as simply as an aperture ring replcement?  And if so, would the K-AI conversion kit (aperture ring) be the same as the AI ring?

Example:  20mm f/4 K conversion kit have the same aperture ring as the to 20mm f/4 AI.  This was listed as the cheapest conversion option based on Roland's info http://www.photosynthesis.co.nz/nikon/aimod.html which suggests labour and parts (and shippping) were reasonable simple.


The background to this is I have a Nikkor 20mm f/4 AI but it's got some problems but have an option on a 20mm f/4 K that is in good condition - I wonder if i can simply swap the aperture rings (from AI onto the K) and have an AI'd K lens.  Milling/filling the K ring is something I'd like to avoid since I have an AI aperture ring.
My limited experience swapping K and Ai aperture rings is that the Ai kit ring can (obviously) swap onto a K lens, and the K ring should go onto the Ai lens without issue.  My experience: I have switched K to Ai, and Ai to K, on a 28/2.8 K/Ai lens a few times between the two copies of the lens. 
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Your Weekly Blog / Re: March 2026
« Last post by Frank Fremerey on March 22, 2026, 04:02:41 »
let us use the red light to cross the street!
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Your Weekly Blog / Re: March 2026
« Last post by Ian Watson on March 22, 2026, 03:04:22 »
The downside to visiting the Royal Ontario Museum during March Break is the crowds.

Nikon Zf, 35/1.8S
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What the Nerds Do / Re: Vintage weapon
« Last post by Wannabebetter on March 22, 2026, 01:49:14 »
Just what I need mounted on my Nikon S :D. And speak of insanely expensive, why I could buy a decently good SP, perhaps with a lens, for the price of one of those Trijicon widow makers. Goes to show: It pays to have certain "friends". (Please don't eat me!)
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Camera Talk / Re: Nikonos II
« Last post by Wannabebetter on March 22, 2026, 01:27:57 »
ABout the only underwater photography I've done recently was on travels where film is not practical, and I don't anticipate using a Nikonos film camera in the foreseeable future.  But earlier today I was at the photo repair and old stuff store, and they had a Nikonos II in worn but working condition, no lens, for $5.00, and an invisible hand plucked a bill out of my wallet and... well, you know.  It's been there a while, and I just couldn't stand to see it languish.

If by chance someone for whom shipping from Eastern US is a practical matter would like to pay the small amount for a small flat-rate box, I'd be happy to send them the thing (I'll eat the 5 bucks if you can use the camera).

The camera in question has a foggy viewfinder, and it's definitely been around, but the shutter works fine, and it seems to be in good working order with no signs of leakage.

I only just today took possession of a Nikonos II albeit in much better cosmetic condition then yours and with a 28mm 3.5 UW Nikkor, and for six times what you paid. At the moment I'm contending with an intermittent shutter and - no surprise - the prospect of having to disassemble the viewfinder housing to clear-up some fogging. While it is doubtful the camera will pass any pressure-rating for dive depth after I'm done effectively turning it into a pretty paperweight, I'm confident it will serve me well enough snorkeling or rolling around in the mud during a hurricane - that is, after I replace that 28mm with a suitable land/air lens. (I would also gladly disabuse you of your Nikonos II as I'm a stickler for punishment especially when abused and orphaned Nikons are the concern. However...I realize this is a very old thread etc  :D)
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Lens Talk / Re: Medical Nikkor 120mm f4
« Last post by Wannabebetter on March 22, 2026, 01:09:06 »
Been away for awhile with school and personal business, and hadn't realized until just now that you troubled yourself to post these schematics. They are a great help - and I thank you!
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