6 replies to this topic

[Rogier Willems]

How can I tell the difference between the first and later model 15mm UW Nikkor lens?
The first version had a longer barrel that blocked the light sensor in the Nikonos IV & V camera's.

When searching on Ebay how can I tell the difference?

[Alex_Mustard]

The barrel length (outside the camera) is longer on the newer one.

This is a newer one:


Can't find a picture of the old one with Google!

Alex

[Eyematey]

I would have to go look but the older models were longer on the inner portion of the lens. That interfered with TTL sensor on NIK V. Newer ones are about 1/2" or less from inside glass to o-ring groove. Be sure to ask the seller.

How can I tell the difference between the first and later model 15mm UW Nikkor lens?
The first version had a longer barrel that blocked the light sensor in the Nikonos IV & V camera's.

When searching on Ebay how can I tell the difference?

[Rogier Willems]

Thanks for the reply's

But without having the two different ones next to each other to compare the barrel length I still don't know how to see it on a picture.
Is there a difference in name or serial number or some other characteristic that helps me to the differentiate these lenses?

[Deep6]

Thanks for the reply's

But without having the two different ones next to each other to compare the barrel length I still don't know how to see it on a picture.
Is there a difference in name or serial number or some other characteristic that helps me to the differentiate these lenses?

Try Nikonusa.com under Service & Support tab. You can submit a question to the techies. There is a fair chance that there is a difference in the SN series. Please post their response.

Regards,
Bob

[ikan]

Thanks for the reply's

But without having the two different ones next to each other to compare the barrel length I still don't know how to see it on a picture.
Is there a difference in name or serial number or some other characteristic that helps me to the differentiate these lenses?

I believe the original 15mm f/2.8 had serial numbers 15XXXX whereas the later f/2.8N retrofocus model had serial numbers starting at 200001. Apart from the serial number range, there was no difference in the markings on the front dome retaining ring.

The length of the cylindrical section of the lens body that contains the distance and aperture scale window and controls is noticeably different between the two versions. If you view the lens side on with the scale window visible then on the original lens this cylindrical section is not much longer than the depth of the window and the controls are very close to the front section of the lens.


Rear view of original lens with controls close behind rear of dome and showing rear element extended well back from the mount.

In the later lens the cylindrical section of the body is significantly extended with the window being about a third of the length of the cylinder. The cylindrical section is stepped so that it has a smaller diameter nearer the mount. The controls are in this part which puts them well back from the front dome section of the lens (see image in Alex's post).

Later lens showing position of the the controls and window.


Richard

Edited by ikan, 21 November 2008 - 05:42 PM.

[Rogier Willems]

Richard

THANK YOU VERY MUCH FOR ALL THE EFFORD !!!