Author Topic: Ameyoko Camera!!!  (Read 1009 times)

richardHaw

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Re: Ameyoko Camera!!!
« Reply #15 on: February 17, 2021, 00:25:02 »
I wonder if the same occurs with the 16/3.5?
it focuses BEYOND infinity :o :o :o
2m appears to be 1m with mine and infinity is about 5m ::)

PS: unicorn lens arrived this morning, thanks for facilitating this.

Jack Dahlgren

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Re: Ameyoko Camera!!!
« Reply #16 on: February 17, 2021, 00:39:58 »
it focuses BEYOND infinity :o :o :o
2m appears to be 1m with mine and infinity is about 5m ::)

PS: unicorn lens arrived this morning, thanks for facilitating this.

Like Buzz Lightyear says "to infinity and beyond!"

I think it isn't broken, just built that way.

richardHaw

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Re: Ameyoko Camera!!!
« Reply #17 on: February 17, 2021, 00:47:37 »

I think it isn't broken, just built that way.

was your lens serviced before? :o :o :o

I suspect that its the alignment of the elements. ::)

modifying it is very difficult, it's imprecise since its not easy to adjust

Jack Dahlgren

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Re: Ameyoko Camera!!!
« Reply #18 on: February 17, 2021, 01:21:42 »
was your lens serviced before? :o :o :o

I suspect that its the alignment of the elements. ::)

modifying it is very difficult, it's imprecise since its not easy to adjust

It is hard to know, given I didn't own it but for the first 45 years of its life, but I suspect not. The mount seems nearly untouched indicating that it was either permanently mounted, or constantly attached. No signs of trauma to the screws either.

Roland Vink

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Re: Ameyoko Camera!!!
« Reply #19 on: February 17, 2021, 02:47:53 »
it focuses BEYOND infinity :o :o :o
2m appears to be 1m with mine and infinity is about 5m ::)

PS: unicorn lens arrived this morning, thanks for facilitating this.
Oh yes, infinity at the 5m mark means infinity is beyond infinity :o :o :)
That's better than not getting to infinity at all, but still annoying. The focal length is very short, so the extension needed to focus to a given distance is very small, if it's not calibrated right it could throw infinity point out a lot.

RE: Unicorn lens - that was quick! Look forward to your blog on this one :)

richardHaw

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Re: Ameyoko Camera!!!
« Reply #20 on: February 17, 2021, 03:01:43 »
yes. it took me 3 hours to calibrate it, all to no avail...very frustrating :o :o :o each time I remove 0.05mm it throws everything off

pluton

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Re: Ameyoko Camera!!!
« Reply #21 on: February 18, 2021, 05:49:35 »
Just checked mine - Pre-K sn 273168.
Looks like it does the same.
Never noticed though because I think I probably never focused it at infinity, and if I did, I used the viewfinder not the scale.
Since others have confirmed this exact same oddity on their copies, It seems that Nikon deliberately built it this way.  Maybe there is focus shift upon stopping down the iris that Nikon sought to "correct" in common use (stopped down to f/11, typically)?
Keith B., Santa Monica, CA, USA

Jack Dahlgren

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Re: Ameyoko Camera!!!
« Reply #22 on: February 18, 2021, 18:58:15 »
For those without the lens, I was inspired to use it yesterday and here are the sorts of images it produces:

richardHaw

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Re: Ameyoko Camera!!!
« Reply #23 on: February 19, 2021, 02:11:43 »
the corners appear sharp :o :o :o

were these shot at smaller apertures? ::)

Jack Dahlgren

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Re: Ameyoko Camera!!!
« Reply #24 on: February 19, 2021, 02:56:26 »
the corners appear sharp :o :o :o

were these shot at smaller apertures? ::)

Corners are pretty clean at f/5.6, but I think these are likely f/8 - f/11

richardHaw

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Re: Ameyoko Camera!!!
« Reply #25 on: February 19, 2021, 03:07:06 »
Corners are pretty clean at f/5.6, but I think these are likely f/8 - f/11

that's why. :o :o :o

richardHaw

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Re: Ameyoko Camera!!!
« Reply #26 on: February 19, 2021, 03:08:07 »
I have even fabricated NEW shims but adjusting the focus just made me lose more hair :o :o :o
since other people are also experiencing this I will just accept this as "normal"

Erik Lund

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Re: Ameyoko Camera!!!
« Reply #27 on: April 16, 2021, 13:09:51 »
Make sure not to over-tighten the rear most lens cell when mounting it.
No markings on the lens mount screws doesn't say someone with the right tools didn't screw off the lens mount ;)
Erik Lund