Breakfast [20 Sept 2014]

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Rolled omelette, with bacon, corn, cheese, chilli. Orange wedges, banana, nyponsoppa, coffee. Pear yogurt.

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Nikon LENS SERIES E Zoom 36~72mm 1:3.5 – Reassembly

An interesting lens that I bought with a tired Nikon FM2.

Originally released in 1982 with the Nikon EM model as an economical range of lenses for a mature photographers. This lens design is intended to provide you with three lens functions in one package; a macro, a prime and a zoom. Matched with the EM, this made for a very useful kit.

But, what I have here in my hand needs some servicing. The glass is clear. After a check to see how the sliders and helicoid work, I find them very stiff, Especially the zoom, so I decided to disassemble, clean and reassemble.

To support me I found another blog showing how the parts were disassembled, including some original drawings.

So I started. I took it all apart. Except for the elements in their mountings. Now to put it all back together.

The Aperture Subassembly

This was the last part out, so I started here, then I discovered that the aperture blades were oily.

After disassembling the aperture subassembly, without disassembling the actual blade subassembly, I soaked the components in isopropyl alcohol to remove the oil and then used canned air to blow the parts clean.

Then I began my reassembly. First these two parts.

Then the retaining ring.

The the lens subassembly.

Turn it upside down. And drop the lens element in place; flat side down.

Finally, the retaining ring.

The Zoom Tube Subassembly

This subassembly took a couple of iterations to get the sequence correct.

I start with the front extension tube.

Place the aperture subassembly inside the tube.

I place the copper leaf springs in their pockets and drop some lube on the peak.

Then slide the zoom helicoid over the springs, noting the orientation marking.

Assemble the screws and nut blocks.

The Focal Length

The focal length scale tube is mounted to tube assembly, after extending the tube to its full length.

The Mounting Face

This is straight forward, making sure to catch the actuators for the aperture.

Once the sub assembly is done, put a cover so you can stand the lens.

The Focusing Ring

The outer focusing ring is in good shape even if there are a few nicks. However, the rubber grip is in good condition.

Position the focus stop.

The inner half of the helicoid looks good, after cleaning.

The infinite focus needs to be set before the focus ring is locked down.

Film Stock – ExtraFilm

Curious film stock this ExtraFilm.

Many claim that it was manufactured by Ferrania in Italy, considered to be the biggest source for private label film stock. Ferrania was the supplier of Solaris film in the USA and ExtraFilm in Europe. They exited the film business around 2009. More about the company can be found on Wikipedia.

Through much of the 1990’s, I used a great deal of this film myself. The film was low cost and the family was satisfied with the quality of the pictures printed from the film.

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Every once in a while it shows up in the online auction sites, like Tradera, where just last week I picked up three rolls.

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Of course, given todays date of 2017, it’s expired. But, really not that old. These three rolls expire in 2007 (a 24 exposure roll) and 2009 (two rolls of 36 exposure). And you can clearly see the batch numbers NB5301 (expiration 10/2007), NE7144 (expiration 01/2009) and NE7676 (expiration 03/2009).

I used this film quite a bit during the 1990’s in Sweden. I dug up some of my old developed film to check on what were the identifying markings.

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The image above is the back of some exposed film stock with the ExtraFilm on a handling strip / carrier that was mounted on the stips that wer cut into lengths of four frames. The image below is the front. What is interesting is the repeating green squares.

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However, I don’t believe that this film stock is ExtraFilm, because it is too similar to the FotoLabo Club film stock with its green squares, albiet a different pattern.

FotoLabo Club film stock

This film stock I scanned below is certainly ExtraFilm, where you can see the alternating red plus and dots. I also bought this roll of film on an aution site in Sweden.

ExtraFilm Film stock

From another position on the strip you can see the speed (i.e. 200), expiration date (87-6) and a batch code ND8311.

ExtraFilm film stock 2

From adifferent roll that came inside a Chinon point and shoot, which appears to be damaged from age, I can again see the speed (i.e. 200), expiration date (87-2) and a batch code SE3920 with the characteristic pattern of red + • in a pattern of four pairs.

ExtraFilm film stock 3

So if you are digging in your old film stock and wondering who made the film, here are some clues.

What I’m interested in now is if the barcode on the edges can be read?