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Rear Anamorphic Attachment


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#1 Murthy SNB

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Posted 23 May 2006 - 01:57 AM

Good day to all cinematographers,

I have got a REAR ANAMORPHIC ATTACHMENT with marking f 50-500

Anybody got what does it mean?

How it should be attached to a zoom lens? 12-120 which I have?

Murthy snb
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#2 Olex Kalynychenko

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Posted 23 May 2006 - 03:36 AM

Good day to all cinematographers,

I have got a REAR ANAMORPHIC ATTACHMENT with marking f 50-500

Anybody got what does it mean?

How it should be attached to a zoom lens? 12-120 which I have?

Murthy snb


Send me image of adapter on e-mail olex@a-teleport.com.

Possible, this is russian rear anamoprhic adapter from zoom lens 50-500 mm ( spherical range 25-250 mm )
35OPF-7-1A, 35-OPF-15-1A.
But, i need check image.
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#3 Adam Frisch FSF

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Posted 23 May 2006 - 03:37 AM

It probably is made to fit the Cooke 25-250 or the Angeneieux 25-250 since they both tunr into 50-500mm
lenses when they have rear anamorphic attachemnts.
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#4 Leo Anthony Vale

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Posted 23 May 2006 - 02:56 PM

,

I have got a REAR ANAMORPHIC ATTACHMENT with marking f 50-500

Anybody got what does it mean?

How it should be attached to a zoom lens? 12-120 which I have?


---If it would fit behind a 12-120mm T2.5, it would become a 24-240mm T3.5.
But it won't fit. You'll need a space of about 2" or a bit more from the rear element to the film plane.

A 12-120mm won't have the space.

---LV
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#5 Murthy SNB

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Posted 26 May 2006 - 10:55 AM

---If it would fit behind a 12-120mm T2.5, it would become a 24-240mm T3.5.
But it won't fit. You'll need a space of about 2" or a bit more from the rear element to the film plane.

A 12-120mm won't have the space.

---LV

Verymuch Glad Mr.Leo, Please let me know about the SPACE you mentioned,
2" from the rear element to the film plane,

1)rear element of the adaptor?
2) what is the space should be between the rear element of the zoom
and the front element of the adaptor?

eager to hear from you with regards,
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#6 Leo Anthony Vale

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Posted 26 May 2006 - 01:17 PM

Verymuch Glad Mr.Leo, Please let me know about the SPACE you mentioned,
2" from the rear element to the film plane,

1)rear element of the adaptor?
2) what is the space should be between the rear element of the zoom
and the front element of the adaptor?

eager to hear from you with regards,


---It's the space between the rear element of the zoom and the film plane.

Off hand, the NipponScope/Shiga rear attachment has a distance from its front element to the film plane of 55mm, so the rear of the zoom has to be greater than 55mm from the film plane.
At home, I've some specs for a couple of Soviet zooms, a 25-250/50-500A and a 25-100/50-200A.

The rear focuses of thezooms with and without the attachment show it is similar in size to the Shiga. On 16mm zooms, 12-120s in particular, the rear focus (distance from rear element to film plane) is around 30mm or high 20s.
I believe the rear focus of the anamorhic attachment is about the same, low 30s.

So there just isn't the space behind a 16mm zoom to fit the atachment.
It'd be swell if it were.

Sorry to disappoint you.

---LV
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