NikonGear'23

Gear Talk => What the Nerds Do => Topic started by: richardHaw on July 25, 2024, 02:20:22

Title: W-Nikkor 2.5cm f/4
Post by: richardHaw on July 25, 2024, 02:20:22

https://richardhaw.com/2024/07/25/repair-w-nikkorc-2-5cm-f-4/
Japanese Topogon :o :o :o

Title: Re: W-Nikkor 2.5cm f/4
Post by: Akira on July 25, 2024, 03:56:30

I'vew heard that you must be careful when cleaning the very thin inner concave elements.  If use alcohol, the glass can be cooled too quickly by the vaporing alcohol, which may cause the cracking of the element.

You seem to have got away with the cleaning using whatever method possible.  Nice job!

Title: Re: W-Nikkor 2.5cm f/4
Post by: richardHaw on July 25, 2024, 04:02:49

Quote from: Akira on July 25, 2024, 03:56:30

I'vew heard that you must be careful when cleaning the very thin inner concave elements.  If use alcohol, the glass can be cooled too quickly by the vaporing alcohol, which may cause the cracking of the element.

You seem to have got away with the cleaning using whatever method possible.  Nice job!

I think it's mostly exaggerated :o :o :o

Title: Re: W-Nikkor 2.5cm f/4
Post by: richardHaw on July 26, 2024, 02:01:52

Now, it's time to find a reasonable price Leica mount version :o :o :o