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Search: Posts Made By: M Stewart
Forum: Cameras - small format 28th March 2020, 11:44 PM
Replies: 14
Views: 6,902
Posted By M Stewart
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...
Forum: Equipment miscellaneous 9th March 2020, 12:26 AM
Replies: 8
Views: 3,246
Posted By M Stewart
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...
Forum: Darkroom 3rd March 2020, 12:47 AM
Replies: 40
Views: 8,671
Posted By M Stewart
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...
Forum: Equipment miscellaneous 12th February 2020, 12:54 AM
Replies: 29
Views: 7,914
Posted By M Stewart
About 3 years ago I bought a Rodagon-WA 40 (40mm...

About 3 years ago I bought a Rodagon-WA 40 (40mm F/4 and covering a 35mm full-frame negative) from Ffordes for around £100. It's not an APO, but could have been worth considering before you got to...
Forum: Equipment miscellaneous 7th December 2019, 09:07 PM
Replies: 14
Views: 4,580
Posted By M Stewart
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,...
Forum: Darkroom 8th November 2019, 01:27 PM
Replies: 12
Views: 2,665
Posted By M Stewart
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...
Forum: Darkroom 4th September 2019, 11:17 AM
Replies: 6
Views: 5,291
Posted By M Stewart
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...
Forum: Darkroom 16th September 2018, 10:36 AM
Replies: 10
Views: 4,319
Posted By M Stewart
Very definitely - from very distant memory, lamp...

Very definitely - from very distant memory, lamp life of a tungsten filament lamp is inversely proportional to (voltage)^4 - ouch! I've no idea whether the introduction of a halogen gas changed the...
Forum: Darkroom 16th September 2018, 09:50 AM
Replies: 10
Views: 4,319
Posted By M Stewart
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...
Forum: Darkroom 16th September 2018, 09:20 AM
Replies: 10
Views: 4,319
Posted By M Stewart
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...
Forum: Darkroom 15th September 2018, 11:14 PM
Replies: 10
Views: 4,319
Posted By M Stewart
The Philips 13139 lamp is 12V 75W - source -...

The Philips 13139 lamp is 12V 75W - source - Philips data sheet.
Forum: Darkroom 3rd March 2018, 09:21 AM
Replies: 7
Views: 3,170
Posted By M Stewart
Somewhere I think I've got the glazing sheet, so...

Somewhere I think I've got the glazing sheet, so perhaps I might give it a go. The dimmer control lets me choose the temperature.

Many decades ago I squeegeed prints to clean window glass, and...
Forum: Darkroom 2nd March 2018, 11:58 PM
Replies: 7
Views: 3,170
Posted By M Stewart
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...
Forum: Darkroom 1st March 2018, 12:52 AM
Replies: 10
Views: 13,523
Posted By M Stewart
Since November 2016, I've accumulated 3 Focomat...

Since November 2016, I've accumulated 3 Focomat V35 enlargers - various states of distress. Two have the colour module, one has the Multigrade, and one of them came with the original lamp holder....
Forum: Cameras - small format 17th December 2017, 12:27 AM
Replies: 21
Views: 7,724
Posted By M Stewart
Another source for price data is the BJP Annual...

Another source for price data is the BJP Annual which certainly used to carry prices of current gear, as well as short "reviews". Your local library may have copies - mine are before the period...
Forum: Darkroom 1st December 2017, 10:28 PM
Replies: 10
Views: 6,290
Posted By M Stewart
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...
Forum: Darkroom 28th November 2017, 08:02 PM
Replies: 10
Views: 6,290
Posted By M Stewart
Well done with your endeavours - good for these...

Well done with your endeavours - good for these crafts to be kept alive.
I don't have a spare lens board, but I can scan mine (from my 365 enlarger) so that you have the precise dimensions. It's...
Forum: Darkroom 10th October 2017, 12:10 AM
Replies: 21
Views: 6,425
Posted By M Stewart
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...
Forum: Darkroom 9th October 2017, 11:24 PM
Replies: 21
Views: 6,425
Posted By M Stewart
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...
Forum: Darkroom 21st September 2017, 02:42 PM
Replies: 10
Views: 6,290
Posted By M Stewart
Hi David, I posted the Vivitar 35mm neg carrier...

Hi David,
I posted the Vivitar 35mm neg carrier to you this morning.
Forum: Darkroom 19th September 2017, 08:08 AM
Replies: 10
Views: 6,290
Posted By M Stewart
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...
Forum: Darkroom 7th September 2017, 08:47 AM
Replies: 12
Views: 5,251
Posted By M Stewart
The Valoy II is quite old, and if the cable is...

The Valoy II is quite old, and if the cable is the original (or a lower quality replacement) it may be suffering from cracks in the insulation. I'd strongly recommend that it's examined, and...
Forum: Darkroom 10th August 2017, 09:01 PM
Replies: 38
Views: 20,236
Posted By M Stewart
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...
Forum: Darkroom 9th August 2017, 12:12 AM
Replies: 8
Views: 4,444
Posted By M Stewart
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. ...
Forum: Darkroom 21st July 2017, 02:54 PM
Replies: 8
Views: 4,444
Posted By M Stewart
Further to the above, one item was missing - the...

Further to the above, one item was missing - the rather essential enlarger column. Quick query to my donor, it's been found and it's now re-united with the enlarger which I've now fully assembled. ...
Showing results 1 to 25 of 72

 
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