Forum: Cameras - small format
28th March 2020, 11:44 PM
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Replies: 14
Views: 6,901
Many decades ago my younger brother bought an...
Many decades ago my younger brother bought an Olympus Pen EE (?) with a fixed focus lens, and I developed his films for him, and I was very impressed at how sharp the negs were. (Somewhat envious as...
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Forum: Equipment miscellaneous
9th March 2020, 12:26 AM
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Replies: 8
Views: 3,246
Is this of any interest?
...
Is this of any interest?
https://www.ebay.co.uk/itm/VINTAGE-GEC-G-E-C-LIGHT-EXPOSURE-METER-LUX-ILLUMINATION-METER-MODEL-M903/133352594606?hash=item1f0c6f1cae:g:wcwAAOSwKtVeYTHD
I see that...
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Forum: Darkroom
3rd March 2020, 12:47 AM
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Replies: 40
Views: 8,671
I have three of the CE Rokkors; 30mm, 50mm and...
I have three of the CE Rokkors; 30mm, 50mm and 80mm.
Years ago I had quite a lot of use out of the 50mm F/2.8, and occasionally the 80mm with 120 film negatives. I found the 30mm decades ago when...
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Forum: Equipment miscellaneous
12th February 2020, 12:54 AM
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Replies: 29
Views: 7,914
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Forum: Equipment miscellaneous
7th December 2019, 09:07 PM
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Replies: 14
Views: 4,580
Interesting - one of my other hobbies is very...
Interesting - one of my other hobbies is very basic metrology. Gauge blocks, optical flats and similar.
The professionals use a small sodium lamp for checking how flat the gauge blocks are,...
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Forum: Darkroom
8th November 2019, 01:27 PM
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Replies: 12
Views: 2,665
All I can add is that many years ago I bought a...
All I can add is that many years ago I bought a Vivitar 356 enlarger with its unusual to-the-UK bulb (EKG?) and as a precaution I bought 2 or 3 original spares at the same time. Some years later, I...
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Forum: Darkroom
4th September 2019, 11:17 AM
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Replies: 6
Views: 5,290
If you're competent with electrics and where...
If you're competent with electrics and where there's water, go ahead, but I can see from your first image that the wiring appears to be 2 core, and thus the enlarger metalwork doesn't appear to be...
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Forum: Darkroom
16th September 2018, 10:36 AM
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Replies: 10
Views: 4,319
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Forum: Darkroom
16th September 2018, 09:50 AM
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Replies: 10
Views: 4,319
Hi, whilst you were replying, I've measured the...
Hi, whilst you were replying, I've measured the resistance of the secondary on my V35 transformer, and it's 0.4 to 0.5ohms, less resistance of leads, 0.2 ohm.. (2 meters...) The nominal current at...
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Forum: Darkroom
16th September 2018, 09:20 AM
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Replies: 10
Views: 4,319
Were you measuring the voltage with the lamp...
Were you measuring the voltage with the lamp "On", or with the transformer off load?
What's the source of your lamps? Are they genuine Philips, or some after-market clone...?
I might be able to...
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Forum: Darkroom
15th September 2018, 11:14 PM
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Replies: 10
Views: 4,319
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Forum: Darkroom
3rd March 2018, 09:21 AM
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Replies: 7
Views: 3,169
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Forum: Darkroom
2nd March 2018, 11:58 PM
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Replies: 7
Views: 3,169
What a fascinating website - brings back many...
What a fascinating website - brings back many memories.
Found many years ago, I have a Kodak paper dryer - the type with a canvas apron which is stretched over the paper. I soon discovered why it...
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Forum: Darkroom
1st March 2018, 12:52 AM
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Replies: 10
Views: 13,523
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Forum: Cameras - small format
17th December 2017, 12:27 AM
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Replies: 21
Views: 7,724
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Forum: Darkroom
1st December 2017, 10:28 PM
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Replies: 10
Views: 6,289
With regard to the above query, I replied...
With regard to the above query, I replied directly to David via email.
For others who may be interested - the Vivitar V1 enlarger appears to not have any provision for a red filter, whereas the...
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Forum: Darkroom
28th November 2017, 08:02 PM
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Replies: 10
Views: 6,289
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Forum: Darkroom
10th October 2017, 12:10 AM
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Replies: 21
Views: 6,425
That's difficult without having graphs showing...
That's difficult without having graphs showing spectral output for a range of modern LEDs. I made mistakes recently when buying "white" LEDs and choosing the wrong colour temperature - they were far...
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Forum: Darkroom
9th October 2017, 11:24 PM
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Replies: 21
Views: 6,425
I may have missed this in the above, but isn't...
I may have missed this in the above, but isn't the problem with "white" LED lamps and photo paper, that the LED starts by generating UV (or intense blue) which is then turned into something a bit...
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Forum: Darkroom
21st September 2017, 02:42 PM
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Replies: 10
Views: 6,289
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Forum: Darkroom
19th September 2017, 08:08 AM
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Replies: 10
Views: 6,289
Morning Dave,
For many years the Vivitar 356...
Morning Dave,
For many years the Vivitar 356 was my main enlarger (bought in 1982 when Vivitar were selling them off), and I find I have several 35mm Vivitar negative carriers.
Before I put...
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Forum: Darkroom
7th September 2017, 08:47 AM
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Replies: 12
Views: 5,251
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Forum: Darkroom
10th August 2017, 09:01 PM
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Replies: 38
Views: 20,233
Hi Edmund,
Many thanks for posting the spectra...
Hi Edmund,
Many thanks for posting the spectra of different light sources. Very useful, not only for enlarger usage, but also for choosing an LED for microscopy under-stage lighting. I made the...
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Forum: Darkroom
9th August 2017, 12:12 AM
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Replies: 8
Views: 4,444
Hi John,
I've now fitted the enlarger with a...
Hi John,
I've now fitted the enlarger with a Philips 13W LED BC lamp with an output equiv to 100W tungsten. Colour temp is Warm White, which I hope will be OK. If not, it's easy enough to change. ...
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Forum: Darkroom
21st July 2017, 02:54 PM
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Replies: 8
Views: 4,444
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