The new Nikon mirrorless system

[Erik Lund]

But for 99.9% of lenses you will be beyond infinity focus on the Nikon Z 

[Birna Rørslett]

But for 99.9% of lenses you will be beyond infinity focus on the Nikon Z 

In a galaxy far, far away .... or beyond.

If the 55/1.2 Nikkor-O is really bad outside the very on-axis centre on the small m43 or CX formats (which it demonstrably is), it will be even worse on the Z. Alternative, one can get it into the design range m=1:4-1:5 and get optimum performance, but no infinity focus.

[Michael Erlewine]

But for 99.9% of lenses you will be beyond infinity focus on the Nikon Z 

As a close-up photographer, I don't require infinity focus.

[Birna Rørslett]

I think you misunderstood Erik.

As the register distance on the Z is so much shorter than on the F , you need to add *more* extension just to get the lens to focus equally close. Meaning that with the FTZ adapter, there is no change in the focusing range at all.

[armando_m]

http://richardhaw.com/2018/09/23/report-nikon-z/

just my opinions

Richard, It is refreshing to see a down to earth opinion, thanks for sharing your article

I'm in the same boat as you interested in the Z6, plan to order it in the future.

[Michael Erlewine]

I think you misunderstood Erik.

As the register distance on the Z is so much shorter than on the F , you need to add *more* extension just to get the lens to focus equally close. Meaning that with the FTZ adapter, there is no change in the focusing range at all.

What I don't want is the same range as the FTZ adapter, but something that will increase that range at whatever expense to the lens IQ.

[Akira]

But for 99.9% of lenses you will be beyond infinity focus on the Nikon Z 

You don't need to focus at around infinity.  Michael just wants to focus a little further than, say with Nikkor-O mounted on a D850 via BR-15.

[Birna Rørslett]

Then, one has to build an adapter [+ focusing] from the ground, starting with an Z mount and adding suitable extension. With the FTZ adapter in place, there will be no difference -- by definition.

The Nikkor-O, put directly on the Z, will not focus at all (or rather, it is way beyond infinity).

[Seapy]

Then, one has to build an adapter [+ focusing] from the ground, starting with an Z mount and adding suitable extension. With the FTZ adapter in place, there will be no difference -- by definition.

That was what I just said, before being shot down in flames by Erik?

It isn't as hard as he is making out.

[Michael Erlewine]

Here is a photo I just took an hour ago that suggest what I like to do with the Nikkor "O" CRT lens, wide open. The DOF is razor sharp, but by stacking that very thin depth of field and leaving the rest as bokeh, a nice effect can be had, IMO. This stack is 74 layers deep.

Nikon D850

[Seapy]

Wonderful as always Michael, I think you are getting the hang of it! 

[Erik Lund]

You don't need to focus at around infinity.  Michael just wants to focus a little further than, say with Nikkor-O mounted on a D850 via BR-15.

It was you who posted to omit the helicoid Here:
 

Also, you can simply omit the helicoid to maximize the focusing distance!

That is why I commented that you the would be beyond infinity!
Please re-read B's posts and mine as well - and you should be able to follow 
I know all about Michaels line of work, we have been helping him here for years through thick and thin, adapters 

[Erik Lund]

That was what I just said, before being shot down in flames by Erik?

It isn't as hard as he is making out.

This is not what B is saying, B is talking about putting finished items together, something completely different.
 You where talking about manufacturing the mounts!
Real F and Z-mounts are forged to withstand use.
Please get a quote for an F-mount and a Z-Mount with matching focus unit without rotation from a local workshop and share the price please it will be more expensive than a Micro Nikkor 60mm AFS

[Akira]

It was you who posted to omit the helicoid Here:
 That is why I commented that you the would be beyond infinity!
Please re-read B's posts and mine as well - and you should be able to follow 
I know all about Michaels line of work, we have been helping him here for years through thick and thin, adapters 

Yes, I know.  I was just referring to Nikkor-O with which you cannot focus at around 1/5 or larger when mounted on an F-mount camera via BR-15.  You cannot even remove the original retaining ring.  You cannot focus for any smaller magnification on an F-mount body.  I do know you know that.

But the Z-mount body allows you to mount Nikkor-O closer to the sensor than the F-mout body does.  That's why I said you can even remove the helicoid if the mount adapter and the helicoid combo happen to be too long for the purpose.  And I do know you know that.

I think Michael understood what I said.

[richardHaw]

not sure if I am missing something but I notice that most adapters focus past infinity

is there something that I dont know about!?

Is it a good idea to shim my adapters so they stop at infinity?