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Best C to F adapter?

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#1 Gschnettler

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Posted 18 May 2021 - 09:55 AM

Hello! I am just getting into the night vision part of this hobby. I see that a lot of people recommend using camera lenses (like Nikon). I have a PVS-7 and I just ordered a C-mount adapter. I have many Nikon DSLR lenses.

What would you recommend as the best C to F adapter to connect them together?

Also, I know that you need space in the adapter to put 1.25” filters so I’m considering that as well.

Thanks in advance for your help!

#2 Joko

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Posted 18 May 2021 - 10:04 AM

Hi Gschnettler,

Not sure there is a "best" adapter, any C to F adapter should work fine.

 

If you need space, you can buy c-mount spacer like this : https://www.ebay.fr/...q8AAOSwRfxcGjQU

There are many sizes available and many sellers on ebay and/or Amazon.



#3 GOLGO13

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Posted 18 May 2021 - 10:51 AM

Hello! I am just getting into the night vision part of this hobby. I see that a lot of people recommend using camera lenses (like Nikon). I have a PVS-7 and I just ordered a C-mount adapter. I have many Nikon DSLR lenses.

What would you recommend as the best C to F adapter to connect them together?

Also, I know that you need space in the adapter to put 1.25” filters so I’m considering that as well.

Thanks in advance for your help!


You need to make sure it has a feature to open the aperture all the way.

I use this one https://www.amazon.c...21352954&sr=8-3

I also sacrificed an old color filter so I could use 1.25 inch filters with it. Or just put a 2 inch filter on the front.

#4 GOLGO13

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Posted 18 May 2021 - 10:53 AM

camera adapter filter

unfortunately this is still a bit tall inside there and I can only use my low profile Astronomik filters inside it. But that’s ok for my situation. Someone can always keep grinding it more thin.



#5 cnoct

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Posted 18 May 2021 - 11:56 AM

The classic factory Nikon F Mount to C Mount lens adapter, the ones that are stepped and feature soft textured blackened coating, not the black anodizing which under IR, just becomes a nice mirrored surface. These adapters tend to command higher prices but you will optimize your systems efficiency with them. 

 

 



#6 tcc

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Posted 18 May 2021 - 03:45 PM

This is my setup when using Nikon lens with PVS-7 :

As shown in the picture (with a 135mm/f2.8 nikon lens) :

Part#1 https://www.ebay.com/itm/402792111678

Part#2 https://agenaastro.c...-extension.html

Part#3 https://agenaastro.c...apter-v-03.html  A 1.25" filter is screwed inside this adapter in the picture

Part#4 is a dust cap to protect the lens when not in use  https://agenaastro.c...-cap-ect2f.html

 

I have Parts #1 & #2 attached to each nikon lens I use. Also, I have Part#3 for each filter I use and installed. This way, changing lens and/or filters is easy especially in winter with gloved hands.

 

001.jpg

 

This is the whole thing put together. The distance from the flange of the nikon lens to the front of the C-mount is 27mm. This distance can be increased and decreased by the length of the T spacer (Part#2). I have tried the 5mm T spacer and it can still reach the T thread inside Part#3.

 

002.jpg

 

It is easy to go from observing with lens to telescope by adding a 2" spacer to Part#3. The following picture shows a 1-inch 2" spacer screwed onto Part#3

 

003.jpg

 

 

 

 

 

 


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#7 a__l

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Posted 18 May 2021 - 03:52 PM

The classic factory Nikon F Mount to C Mount lens adapter, the ones that are stepped and feature soft textured blackened coating, not the black anodizing which under IR, just becomes a nice mirrored surface. These adapters tend to command higher prices but you will optimize your systems efficiency with them. 

 The adapter that I bought from Aliexpress for about the price is higher.
There is a nuance. H-alfa is not recommended for lenses faster than f/2.0 in converging cone.

Attached Thumbnails

  • F-A (1).jpg

Edited by a__l, 18 May 2021 - 03:54 PM.


#8 cnoct

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Posted 18 May 2021 - 11:50 PM

This is my setup when using Nikon lens with PVS-7 :

As shown in the picture (with a 135mm/f2.8 nikon lens) :

Part#1 https://www.ebay.com/itm/402792111678

Part#2 https://agenaastro.c...-extension.html

Part#3 https://agenaastro.c...apter-v-03.html  A 1.25" filter is screwed inside this adapter in the picture

Part#4 is a dust cap to protect the lens when not in use  https://agenaastro.c...-cap-ect2f.html

 

That is an exceptionally well thought out system. 



#9 a__l

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Posted 20 May 2021 - 06:40 PM

The classic factory Nikon F Mount to C Mount lens adapter, the ones that are stepped and feature soft textured blackened coating, not the black anodizing which under IR, just becomes a nice mirrored surface. These adapters tend to command higher prices but you will optimize your systems efficiency with them. 

cnoct,

In your opinion, there will be a noticeable difference between these two devices when viewed from NV?

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  • Test_D.JPG


#10 Gschnettler

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Posted 14 July 2021 - 12:56 PM

I’m trying to recreate the setup listed above. But the ebay item #1 isn’t available anymore.

Would this one work in its place?

https://www.ebay.com...1-127632-2357-0

#11 tcc

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Posted 14 July 2021 - 01:28 PM

I’m trying to recreate the setup listed above. But the ebay item #1 isn’t available anymore.

Would this one work in its place?

https://www.ebay.com...1-127632-2357-0Y

Yes. This will work.



#12 a__l

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Posted 14 July 2021 - 03:22 PM

The classic factory Nikon F Mount to C Mount lens adapter, the ones that are stepped and feature soft textured blackened coating, not the black anodizing which under IR, just becomes a nice mirrored surface. These adapters tend to command higher prices but you will optimize your systems efficiency with them. 

Not only this.
Poor coating will crumble over time. I haven't used my SIPS for a long time. At the moment I upgraded it, but I saw a black dot on the lenses inside the device. It is difficult to remove it at home (a lot of dust). This requires a special room.



#13 Gschnettler

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Posted 14 July 2021 - 04:25 PM

Ok, all parts have been ordered…1, 2 3 and 4. Can’t wait to try them all out!

#14 Gschnettler

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Posted 21 July 2021 - 12:32 PM

I received parts 2,3 and 4. Still waiting on part #1 to attach to the Nikon lens. Parts 2 and 3 seem good…they screw into the PVS-7 and each other ok.

But, what is part #4 for? It doesn’t seem to fit anything.

#15 tcc

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Posted 21 July 2021 - 01:49 PM

I received parts 2,3 and 4. Still waiting on part #1 to attach to the Nikon lens. Parts 2 and 3 seem good…they screw into the PVS-7 and each other ok.

But, what is part #4 for? It doesn’t seem to fit anything.

Part #4 is a dust cap with female T-thread. It can be screwed onto Part #1 or #2.

 

I leave Part#1 & 2 on the nikon lens all the time so I use Part #4 to prevent dust from getting into the nikon lens barrel when not in use. (see picture in my previous post #6 above). If you are taking the adapters off the nikon lens after use with NV, then you do not need this part.


Edited by tcc, 21 July 2021 - 01:57 PM.



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