PC 19mm f/4 E ED

[Bjørn Rørslett]

Erik does it again

I have secured a lens hood for modification - perhaps there will be a lens for it later ?

[Erik Lund]

Sure one will find it's way to you Bjørn

Akira there is a screw to lock it together, glue is for keeping it there without movement,,, Yes two component glue is very strong

Thanks

[Akira]

Erik, thanks for the explanation!

[Erik Lund]

Thanks for your interest

The RRS plate has besides the 1/4" screw a 4mm set-screw, also to prevent movement/rotation.

[PedroS]

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.

Erik, which Burzynski collar did you used/adapted?
I'll do one for myself 

[Erik Lund]

It is the old version of the Burzynski lens collar for Micro-Nikkor AF-D 105mm 2.8 - It has the correct diameter, almost,,,

You need to trim off the flange on the inside of the nylon ring and I also trimmed down the length of the locking screw on the collar since the diameter of the 19mm is slightly smaller.

[PedroS]

It is the old version of the Burzynski lens collar for Micro-Nikkor AF-D 105mm 2.8 - It has the correct diameter, almost,,,

You need to trim off the flange on the inside of the nylon ring and I also trimmed down the length of the locking screw on the collar since the diameter of the 19mm is slightly smaller.

Thanks

[Erik Lund]

Just a follow up on performance, two images from a pre-shoot for the interior of a new school, here shot at f/8 the overall rendering is really good, the amount of sharpness over the entire frame makes it really useful for my purpose.

_EGL9631 by Erik Gunst Lund, on Flickr


Here even at f/5.6 the image has a huge amount of depth of field/focus - when focus is correct!

_EGL9578 by Erik Gunst Lund, on Flickr

[Bjørn Rørslett]

I try to do my best convincing myself this lens is not necessary for my future shooting.

You are not helpful in that regard, Erik

[PedroS]

Hi Erik, got the Burzinski adapter.
How did you manage to put it in place? I'm afraid to open it too much and either distort or broke it... maybe I'm missing something but it only should go through the front and the glass element is huge... as you know.

[Erik Lund]

First remove/cut off with a Stanley knife, the small internal flange from the nylon ring, as this lens is straight, then you put the part furthest from the slit at the focus-ring and with a thumb placed firmly over each end of the slit you slide/sweep your thumbs over the front element/front. Same procedure for the aluminium ring.

If you break a nylon ring or bend aircraft grade aluminium you should exercise less,,,  Both are very strong materials but quite flexible.

[PedroS]

Great thanks.
I won't take lunch today so I might be less strong... 

[Erik Lund]

Just make sure your thumbs completely 'covers' both ends of the ring - then you are safe

[PedroS]

Let you know later, when I'll be back home 

[PedroS]

Hum... doesn't fit.
The plastic ring is a tad larger, and doesn't allow the focus ring to move.
So, some serious work on lathe on perspective. Try to do it this or next weekend.