In order to survive some heavy tropical rain, I add some modification to my beloved 40mm F2 lens.The construction is no match with the most expensive S line, but I found this lens very solid even in bad condition. The week point is the lens mount so I changed the plastic boyonet to a metal one with rubber gasket.I'll try it soon under heavy rainpour and will tell you how it performs ! (As a back up I will also bring the 35mm 1.8S in my bag).(I took the metal bayonet and rubber gasket for my FTZ adaptor, I don't use it as I currently don't own any F lenses, I will switch the bayonet back if I ever need to use it).

Clever. Good luck

Great idea!Does Nikon sell the piece as a replacement item?  Was there any soldering required for the contacts?

Handiworks wrote:Great idea!Does Nikon sell the piece as a replacement item? Was there any soldering required for the contacts?I asked Nikon France, and they don't sell the pieces directly. You have to take them from other lens or you can try to ask little repair shop if they have some spare item, broken glass or FTZ that you can buy for cheap price.Nikon Z mount is quite "new", but you will probably found bayonet mount directly from china or thailand soon (as you can find a lot for F mount).May be it's already avaible in some online shop, but I didn't dig too much as I don't speak chinese.The operation is very easy, just need a tiny screwdriver. No soldering, every thing is just "plug and play". Of course you still need to take your time and do it slowly with gentle move. But easy.And you can reverse the process without issue. If I need my FTZ for a heavy Nikon F, I can switch the bayonet back in 5 minutes.

j_photo wrote:Clever. Good luckIndeed, I wonder whether someone might actually start to offer mettle mounts with gaskets to buy separately?

That's interesting that it fits correctly. Makes sense that it would.I liked this comment from an older thread, about plastic being hydrophilic, repelling water, unlike metal, which wicks it in.Plastic is hydrophobic so it doesn't need a "seal"...So I put a drop of water on my 40mm flange. It beaded up, covering the full width of the flange.But a slight shake of the lens redistributed it to the outside, avoiding the matte surfaced center section. I wonder if that surface design is intentional for a bit of "sealing".  Of course, there still are the four screws that are metal, and might wick water.

That's very clever. Congratulations!

No worries about the optical alignment of the lens after that? You must have screwed on the mount very accurately, otherwise the lens will be tilted.

BasilG wrote:No worries about the optical alignment of the lens after that? You must have screwed on the mount very accurately, otherwise the lens will be tilted.No problem so far, but still in testing phase. Will have more information about behaviour of the lens this week !

I've tried the same thing using my FTZ (Ver 1) with 28mm 2.8 Z 'SE' but the rubber gasket part didn't work perfectly so I ended up putting them back as is. This might be the 28mm 'SE' specific issue so I can't say normal 28mm will be the same(since it worked on this 40mm).

A brilliant concept and looks like it will work great for you.  What do you like to photograph in the rain?  You are not the only one - I love rainy days too, mostly for cityscapes and flowers.

Vintehin wrote:BasilG wrote:No worries about the optical alignment of the lens after that? You must have screwed on the mount very accurately, otherwise the lens will be tilted.No problem so far, but still in testing phase. Will have more information about behaviour of the lens this week !Any updates?  Did you have mount shims in your 40?