Recent Posts

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21
This seemed a rather nerdy thing to do, but it might be of interest to others. It enables me to get focus confirmation and correct IBIS info for any of my manual F mount lenses, and I just need to use my ancient iPhone to ‘edit’ the text file containing the connected lens’s data.

Connected NW-ETZ to my Mac and copied the lens text file to the Mac. Made several copies and edited them to match some of my Nikon F mount manual lenses. I don’t think you should rename the text file, so I placed each one in a lens-named folder. Then easy to copy a chosen text file to the adapter, opting to ‘replace’ the existing file. Works a treat, and the lens exhibits correct exit data on my ZF, I get the green light (and the traffic lights), and IBIS is correct.

So far it’s not exciting, as many have done this already. But I wanted to be able to do this on the fly without a Mac. So I connected a lightning ‘camera’ dongle to my iPhone 13 mini. This has a USB A socket and USB 3 for power input. I used my smallest USB power bank for power. Then I connected the Neweer USB cable and popped it on the adapter. On the iPhone I navigated to the set of folders where I had saved text files for my F mount lenses (files saved in my Dropbox). Selected a text file and then ‘shared’ to the ‘Files’ app and then on to the connected Neweer adapter. Again chose to ‘replace’ the existing file.

Bob’s yer uncle, it worked, and only took about three minutes. No need for any file editing out in the field, just dropped an existing text file on to the adapter.

I did this with Nikon F lenses, via an F to Sony adapter, but of course it would also work with other types of manual lenses with an appropriate adapter.
22
Your Weekly Blog / Re: March 2026
« Last post by ARTUROARTISTA on March 21, 2026, 20:49:14 »
D40X
23
Nature, Flora, Fauna & Landscapes / Re: Cartierheide landscapes
« Last post by HCS on March 21, 2026, 20:32:05 »
Nice to follow.

Thank you Bent!

I see now that #4 has a terrible colour cast. It didn't show like that in my editing software, i'll get it replaced (already working on it).
24
Your Weekly Blog / Re: March 2026
« Last post by Fons Baerken on March 21, 2026, 18:55:57 »
March 21

signs of spring

The firebug,

Pyrrhocoris apterus

Z7_2   Z105mm f/2.8 vrs

25
here is my go to short lens review site...

http://www.naturfotograf.com/lens_wide.html
26
Take care to soften the white locking "paint" on the screws. Do NOT strip the heads or torque them off! I did a DIY conversion of a NIKKOR-P·C Auto 1:2.5 f=105mm. I torqued off the head then with the aid of a vacuum cleaner and a pin vice I somehow drilled a tiny hole in the torqued off screw. I could not buy an extractor small enough so I used a larger drill to bind in the hole and successfully extracted the broken screw.

Stupid! Damned lucky! Learn from my mistake!

Later I used acetone to soften the Loctite thread locker (white, permanent?). A camera repairman friend use a small. butane soldering iron to heat the screws.

Dave

It's been so long but to my knowledge an official Nikon AI conversion kit contained only an aperture ring, AI style rabbit ears and a few screws. John White may still be doing AI conversions as of March 2026.

---

I can't answer the original question. Someone with more experience will surely answer. If you are already experienced with the procedure for removing the rear bayonet screws please accept my apology.

My advice is pickup a clean, used NIKKOR 20mm 1:3.5 AIS as they are highly resistant to flare and ghost and can be turned directly into the sun.
27
Themes, Portfolio Series, PaW, or PaM / Re: [Theme] The Number 13
« Last post by Fons Baerken on March 21, 2026, 18:33:49 »
Thank you Akira, Thomas.
28
Lars, these asphyxiated fish carry a ghostly mood.

Many thanks, Keith!

Yes, and a ghostly mood at the lake as well with many dead fish floating around or caught in the thawing ice. They've become a badly needed meal for hungry scavengers after a frosty and snowy winter.   
29
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:  would the 20mm f/4 K conversion kit have the same aperture ring as the to 20mm f/4 AI?  This kit was listed in the cheaper tier of conversion options 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 dont want to do since I have an AI aperture ring.
30
Themes, Portfolio Series, PaW, or PaM / Re: [Theme] The Number 13
« Last post by Thomas Stellwag on March 21, 2026, 10:53:08 »
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