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Search: Posts Made By: JOReynolds
Forum: Photography in general 31st December 2021, 06:04 PM
Replies: 9
Views: 266
Posted By JOReynolds
cheap(er) monochrome images

Users might be willing to buy colour paper in rolls to get the full cost benefit. Has anyone tried processing it in B&W developer? Do the uncoupled dyes get in the way without bleaching?
Forum: Photography in general 30th December 2021, 07:37 PM
Replies: 9
Views: 266
Posted By JOReynolds
The price of B&W vs colour paper

Is colour paper really cheaper than B&W? It is certainly manufactured in larger quantities and contains far less silver, but has anyone tried getting a decent monochrome image from it?
Forum: Monochrome Film 30th December 2021, 07:22 PM
Replies: 17
Views: 6,745
Posted By JOReynolds
Given that the HD curves of scans can be...

Given that the HD curves of scans can be adjusted, why is a flat contrast curve desirable?
Forum: Photography in general 30th December 2021, 07:16 PM
Replies: 6
Views: 258
Posted By JOReynolds
Weston Photometry

On the subject of Weston photometry in general, I discovered that the light-sensitive cells in Weston Meters were iron discs coated with selenium and, until recently, manufactured by Centronic, now...
Forum: Photography in general 30th December 2021, 07:02 PM
Replies: 7
Views: 185
Posted By JOReynolds
Pétrole is the French word for (crude) petroleum....

Pétrole is the French word for (crude) petroleum. The artists' pigment asphalt, sometimes derived from pétrole, is typically thinned with gasoline (petrol). It was formerly used as an alternative to...
Forum: Photography in general 29th December 2021, 05:27 PM
Replies: 6
Views: 306
Posted By JOReynolds
Remjet removal was incorporated into a...

Remjet removal was incorporated into a motion-picture processor that I studied in the early 70s and consisted of a pre-bath and a nozzle that directed a flat flow at the back of the film. I believe...
Forum: Photography in general 21st December 2021, 03:37 PM
Replies: 6
Views: 306
Posted By JOReynolds
My experience is dated but I recollect that...

My experience is dated but I recollect that remjet removal required mechanical rubbing or wiping. Was there always a chemical means of removal?
Forum: Auctions of Interest 20th December 2021, 11:49 AM
Replies: 3
Views: 288
Posted By JOReynolds
It's a realistic price for a 5x4" camera. The...

It's a realistic price for a 5x4" camera. The carbon-fibre construction should keep the weight down. Have a look at Intrepid Camera as well.
Forum: Colour film 20th December 2021, 11:43 AM
Replies: 6
Views: 474
Posted By JOReynolds
pushed E4

I have no experience of the modern reversal films mentioned but the degraded pushed results described are identical to those I encountered in the seventies with 160asa High-speed Ektachrome. Most of...
Forum: Photography in general 7th December 2021, 11:20 PM
Replies: 11
Views: 585
Posted By JOReynolds
timing

With Ilford MGlV in Multigrade dev, the recommended dev time is 1min at 20C. I give it 2min (the time after which the Multigrade 500H fan goes off) because I find that this is almost to finality - no...
Forum: Sale or Wanted 7th December 2021, 10:52 PM
Replies: 15
Views: 1,778
Posted By JOReynolds
retouching

I was a student at the the Regent Street Polytechnic 1961...65 and the lady who taught us retouching had 'a machine' that she used professionally when not teaching. Was it an Adams? We never saw it....
Forum: Monochrome Film 29th November 2021, 01:23 PM
Replies: 12
Views: 599
Posted By JOReynolds
a word for rinse aid

When I set up my darkroom in France in 2008 forgot to take wetting agent and I didn't know where to find it over there, so I used Finish dishwasher rinse aid. The same dilution as Photoflo 500 worked...
Forum: Monochrome Film 8th November 2021, 12:40 PM
Replies: 24
Views: 1,248
Posted By JOReynolds
To respond to this thread, I have had, for the...

To respond to this thread, I have had, for the first time since 2012, to input my user name and password. Is this new?

I have processed many thousands of rolls of Ektachrome E1/E2/E3/E4 - Kodak...
Forum: Sale or Wanted 6th November 2021, 04:25 PM
Replies: 0
Views: 89
Posted By JOReynolds
Durst neg carriers - free

I have three Durst neg carriers up for grabs: not sure which enlager they are intended for.
- Duoneg with DUOMA 35 24x36 mask
- Duoneg with DUOMA 66 6x6 mask and screw-adjustable masks
- Durst...
Forum: Equipment miscellaneous 6th November 2021, 04:01 PM
Replies: 4
Views: 1,022
Posted By JOReynolds
toxicity of paraphenylene diamine sulfate

I used to manage colour processing labs. CD1 (paraphenylene diamine) is known to be toxic and I was told that CD2 and CD3 replaced it because of the incidence of allergic reaction in staff. Some had...
Forum: New products and offers 28th October 2021, 06:21 PM
Replies: 29
Views: 4,577
Posted By JOReynolds
the spacer...

It's long time since I used a 4x5" Sinar, for which I had a Polaroid back. The running cost, partly in wasted film, was huge. The procedure before exposing was lengthy and steps such as stopping down...
Forum: Photography in general 15th October 2021, 08:23 PM
Replies: 18
Views: 1,184
Posted By JOReynolds
First of all, may I concur with Alexi Sayle. My...

First of all, may I concur with Alexi Sayle. My late father was a sculptor and lecturer. He undertook numerous commissions, mostly from architects, but he never succeeded commercially, unlike his...
Forum: Darkroom 6th October 2021, 08:58 AM
Replies: 8
Views: 552
Posted By JOReynolds
My makeshift darkroom in UK is a tiny shower room...

My makeshift darkroom in UK is a tiny shower room and has a cabinet with a lit mirror/door and a shaver socket. I bought a red golfball LED bulb, which sits in a holder on top of the cabinet and...
Forum: Monochrome Film 19th September 2021, 09:44 PM
Replies: 35
Views: 1,810
Posted By JOReynolds
Some colour emulsions, notably those that use...

Some colour emulsions, notably those that use electrostatic coating and are combined in mid-air, use surfactants to control the layer thickness. This is why the developer tank in continuous...
Forum: Monochrome Film 19th September 2021, 09:29 PM
Replies: 35
Views: 1,810
Posted By JOReynolds
Kodak UK used to have a training laboratory in...

Kodak UK used to have a training laboratory in Hemel Hempstead, Hertfordshire, up the hill from the river Gade, a chalk stream. The towns water was very hard (mainly carbonates) and the school had an...
Forum: Darkroom 6th September 2021, 10:06 PM
Replies: 14
Views: 7,852
Posted By JOReynolds
I, too, think that the Multigrade 500H is...

I, too, think that the Multigrade 500H is brilliant. I have no experience of failures of the power box but I looked at the technical manual and it is not complicated - it ought to be very...
Forum: Darkroom 6th September 2021, 09:54 PM
Replies: 9
Views: 785
Posted By JOReynolds
The lampholders get hot and eventually crumble....

The lampholders get hot and eventually crumble. These are not specific to the Ilford 500 head and are freely available from specialist dealers. The 250W lamps get half as hot as the 500W. Check that...
Forum: Equipment miscellaneous 8th August 2021, 10:04 PM
Replies: 8
Views: 855
Posted By JOReynolds
The settings recommended in the leaflet in the...

The settings recommended in the leaflet in the film carton or printed inside it give an excellent guide. Take a meter reading when the lighting condition matches the printed guide and check for...
Forum: Equipment miscellaneous 8th August 2021, 09:45 PM
Replies: 15
Views: 1,262
Posted By JOReynolds
alternative to dedicated lightbox

I use my wife's iPad, Word loaded, empty document, so the screen is mostly white. This works for viewing negatives but I also used it for copying 35mm transparencies. The column of a Meopta enlarger...
Forum: Cameras - medium format 27th July 2021, 01:26 PM
Replies: 10
Views: 2,166
Posted By JOReynolds
Hasselblad repair and CLA

1. I use:
Classic V Hasselblad repair
25 Villiers Rd
Watford WD19 4AG
07950 039003
He used to work at Hasselblad UK and has the official collimation equipment for checking focus.
He is are...
Showing results 1 to 25 of 500

 
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