PC 19mm f/4 E ED

[bobfriedman]

Bob, good point, checked on all three PCE and all are very loose as well.

since they are manual focus there should be no reason that they need to be loose.

[Ilkka Nissilä]

As long as it stays in position and there is no slack, I prefer a manual focus ring that turns lightly over one that is tight in normal temperature but is too stiff or may jam and break in the cold (Zeiss 100/2 did this).

[Erik Lund]

The focus ring is just right for me. It is just like all other MF lenses RF and IF Nikkors by design, some longer lenses are more heavy dampened due to a longer helicoil.


You can have it serviced to have a more heavy grease type.


But if you do that you will rotate the whole lens especially the two rotation settings!


So it is really not an good idea to coppy Zeiss Otus here at all!

[bobfriedman]

how come the PC 85mm focus ring was stiffer?

[Erik Lund]

The first version? - Then it probably had a more firm rotation stetting.

[Ilkka Nissilä]

The 85 PC-E indeed has a stiffer focus ring but it has a much longer range of physical movement as the focal length is longer and the lens goes to 1:2 magnification. And yes, if you turn the focus ring and the rotation is between clicks, the rotational position will be messed up.

[Erik Lund]

Thank you for the confirmation!

[bobfriedman]

seems to me they could have designed i finer focusing helicoid for the 19mm PC-E

(the PC 85mm/2.8D i was talking about predated the PC-E version)

[Erik Lund]

Seems your sample is defective.


Mine is buttery smooth and very evenly dampened and withstand light tapping with a finger or even letting a finger slide over the grooves of the focus ring without rotating it.

[PedroS]

Seems your sample is defective.


Mine is buttery smooth and very evenly dampened and withstand light tapping with a finger or even letting a finger slide over the grooves of the focus ring without rotating it.

+1

[Erik Lund]

The TC-14E Mark III works fine on the PC-E 19mm as an PC-E 28mm


The TC of course needs to have the 'long lens only tap' removed from the front F-Mount,,,


Sharpness seems just fine and no apparent vignetteing even with 10mm shift


The TC-20E Mark III doesn't seem to fit,,, would not force it,,

The focus shift seems to be empty barrels too me since all focus fine tuning must be done in live view for all critical shots anyway,,, But of course good to be aware of!

[PedroS]

The TC-14E Mark III works fine on the PC-E 19mm as an PC-E 28mm


The TC of course needs to have the 'long lens only tap' removed from the front F-Mount,,,


Sharpness seems just fine and no apparent vignetteing even with 10mm shift


The TC-20E Mark III doesn't seem to fit,,, would not force it,,

The focus shift seems to be empty barrels too me since all focus fine tuning must be done in live view for all critical shots anyway,,, But of course good to be aware of!

Thanks Erik!

[Erik Lund]

Review of the PC-E 19mm - if anyone was in doubt about the ability of the lens, some nice MTF numbers on D810, quite impressive and confirms my own results. I'm very happy I chose this over the 15mm lens options, it suits my architectural work really well, Higher resolution into the edges as well as holding up while stopping down f/11 without dropping sharpness due to diffraction and almost zero fall off.

https://www.ephotozine.com/article/nikon-pc-nikkor-19mm-f-4-e-ed-tilt-shift-lens-review-30494

BTW Currently I'm looking into a Lens collar for stitching - a Burzynski lens collar will be donor,,,

[Erik Lund]

Lens Collar finished, Burzynski and RRS 'donor' parts - Works as intended

A separate split nylon ring tightened with slim screw around the nameplate part so the aluminium collar ring fits over the huge front element during assembly, two small flanges on the nylon ring keeps the collar in place even when rotating to portrait format.

Works for movements around Nodal point and Shift-Stitching,,,

Nikkor PC-E 19mm Lens Collar by Erik Gunst Lund, on Flickr

Nikkor PC-E 19mm Lens Collar by Erik Gunst Lund, on Flickr

[Akira]

Neat job, as always, Erik!

Do the locking screw parts and the Arca-Swiss platform adhere to the collar ring with epoxy?  I've heard that some aircraft-grade epoxy is very strong.