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Search: Posts Made By: Lostlabours
Forum: Photography in general 10th March 2024, 01:29 PM
Replies: 17
Views: 541
Posted By Lostlabours
It's the position of the very diffuse enlarger...

It's the position of the very diffuse enlarger bulb in the head, rather than any additional diffusion. So a compact head unlike the Gnomes etc, the style was first used on a German enlarger in the...
Forum: Photography in general 10th March 2024, 10:59 AM
Replies: 17
Views: 541
Posted By Lostlabours
I agree that a second enlarger is very useful for...

I agree that a second enlarger is very useful for flashing.

The Durst enlargers with condensers are semi diffuse so you don't really see any difference in "sharper contrast", I've used numerous...
Forum: Photography in general 19th February 2024, 07:11 PM
Replies: 21
Views: 935
Posted By Lostlabours
Parallax are the shop selling materials at...

Parallax are the shop selling materials at PhotoFusion in Brixton. I've exhibited there as part of a group show some years ago.

They are part of the co-op that keeps the facilities going, external...
Forum: Monochrome printing techniques 19th February 2024, 02:10 PM
Replies: 17
Views: 1,175
Posted By Lostlabours
Brushes, bleaches, toners, and colour dyes. ...

Brushes, bleaches, toners, and colour dyes.

Ian
Forum: Manufactured brews 19th February 2024, 02:05 PM
Replies: 21
Views: 1,488
Posted By Lostlabours
Powder fixers are Sodium Thiosulphate based,...

Powder fixers are Sodium Thiosulphate based, while Liquid fixers are Ammonium Thiosulphate based and Rapid fixers and more economic.

Ian
Forum: Chemical formulae 5th February 2024, 06:57 PM
Replies: 19
Views: 6,077
Posted By Lostlabours
The Autralian packaging gave these precentages,...

The Autralian packaging gave these precentages, there was also a matching MSDS.

1.8% Boricacid
3.6% Borax
4.5% Hydroquinone

As we know D76 contains 5g per litre Hydroqinone then the Boric...
Forum: Sale or Wanted 3rd February 2024, 07:13 PM
Replies: 13
Views: 845
Posted By Lostlabours
I have 3 safe-lights I have used for color...

I have 3 safe-lights I have used for color printing. The first was an Aeroprint Vibrovision Safelight. It's small approx 7" x 4¾" x ½" has an orange removable filter, the light emitted without the...
Forum: Chemical formulae 3rd February 2024, 05:54 PM
Replies: 19
Views: 6,077
Posted By Lostlabours
I've always used ID-11 replenished,it needs a few...

I've always used ID-11 replenished,it needs a few hours from mixing to settle. we would leave it overnight, or over a weekend. It would last 6 to 8 months and you would spot a slight change.

The...
Forum: Top Tips 24th January 2024, 12:57 PM
Replies: 26
Views: 3,009
Posted By Lostlabours
For a number of years almost all airport scanners...

For a number of years almost all airport scanners were safe for many multiple scans. The tests were done in co-operation with the film manufacturer and the scanner manufacturers, here in the UK under...
Forum: Photography in general 15th January 2024, 12:30 PM
Replies: 60
Views: 3,095
Posted By Lostlabours
Agfa never claimed Rodinal as a fine grain...

Agfa never claimed Rodinal as a fine grain developer because it doesn't give fine grain with all films, particularly 400 ISO emulsions like HP5 or Tri-X.

However if was the recommended developer...
Forum: Photography in general 14th January 2024, 03:36 PM
Replies: 60
Views: 3,095
Posted By Lostlabours
Alan is right about the increased grain and...

Alan is right about the increased grain and sharpness of ID-11 at 1+3.

Rodinal and Fomapan 400 might be a goo combination for grain, but Acutol S would be my first choice with HP5. Or D72 or D163/...
Forum: Great Britain 14th January 2024, 01:01 PM
Replies: 6
Views: 1,468
Posted By Lostlabours
Bridgnorth, Ironbridge, Much Wenlock, Wenlock...

Bridgnorth, Ironbridge, Much Wenlock, Wenlock Edge, these are en-route vto Shrewsbury. I'm about 4 or 5 miles south of Shropshire, you'd almost pass my house.

If you visit Church Stretton it's at...
Forum: Monochrome Film 6th January 2024, 04:55 PM
Replies: 17
Views: 878
Posted By Lostlabours
I only replenish by topping up my 20x16 tray...

I only replenish by topping up my 20x16 tray during a printing session. these can be 8-10 hours at times. I mostly print on FB warmtone papers using ID-78 and as Stocky says the volume of developer...
Forum: Monochrome Film 4th January 2024, 10:56 AM
Replies: 17
Views: 1,692
Posted By Lostlabours
I know ex-students from the Birmingham School of...

I know ex-students from the Birmingham School of Photography from the 70s, also Tim Harris (a lecturer) did some consultancy work for me.

Ian
Forum: Photography in general 24th December 2023, 02:52 PM
Replies: 25
Views: 2,809
Posted By Lostlabours
On an Ilford factory tour around 2007 or 8 we...

On an Ilford factory tour around 2007 or 8 we were told that the R&D to re-formulate the Direct positive emulsion for RC paper couldn't be recouped as sales are relatively small. It's an extremely...
Forum: Photography in general 24th December 2023, 12:38 PM
Replies: 25
Views: 2,809
Posted By Lostlabours
The polyester base was translucent, so it could...

The polyester base was translucent, so it could also be back illuminated.

It couldn't be coated on a paper base as the Dye destruction bleach would destroy it.

The B&W direct reversal emulsion...
Forum: Photography in general 22nd December 2023, 07:53 PM
Replies: 25
Views: 2,809
Posted By Lostlabours
The MSDS for the Dye destruction bleach states...

The MSDS for the Dye destruction bleach states the need for good ventilation, and also mentions localised ventilation.

Photographers lead a precarious life in the early years, Cyanide poisoning...
Forum: Photography in general 21st December 2023, 06:21 PM
Replies: 25
Views: 2,809
Posted By Lostlabours
The Dye destruction bleach contained Sulphuric...

The Dye destruction bleach contained Sulphuric Acid as well as Sodium 3-Nitrobenzenesulphonate. It was a high concentration of acid, so the solution had to be neutralised with the spent first...
Forum: Photography in general 20th December 2023, 07:54 PM
Replies: 25
Views: 2,809
Posted By Lostlabours
I've watched the videos. Wildly inaccurate in...

I've watched the videos. Wildly inaccurate in some ways, in terms of the actual history etc.

In the early 1970s I used Cibacrome, I didn't particularly like the results, by using different First...
Forum: Darkroom 9th December 2023, 02:10 PM
Replies: 19
Views: 4,184
Posted By Lostlabours
Should have been General Lamps. When it says...

Should have been General Lamps.

When it says only use 120v 300w lamps the critical factor is the 120v and the 300w is the maximum wattage.

Although I have quite a few 120v 300w bulbs I have to...
Forum: Darkroom 8th December 2023, 07:38 PM
Replies: 19
Views: 4,184
Posted By Lostlabours
I bought quite a few 120v 300w bulbs some years...

I bought quite a few 120v 300w bulbs some years ago from Lite-tec and there was a significant discount for quantity. Seem to remember 36, 12 were for someone else, and it was a 35-40% discount, The...
Forum: Darkroom 8th December 2023, 12:01 PM
Replies: 19
Views: 4,184
Posted By Lostlabours
I'd forgotten my 5108 De Vere uses 300W bulbs not...

I'd forgotten my 5108 De Vere uses 300W bulbs not 250w. It uses 4 bubs 2 pairs in series, the down side is if one bulb fails you go from 4 to 2. However there is still good even light output at...
Forum: Darkroom 8th December 2023, 12:30 AM
Replies: 19
Views: 4,184
Posted By Lostlabours
The dichroic filters are in the head, nothing to...

The dichroic filters are in the head, nothing to do with re bulbs. That price is rather high.

Ian
Forum: Darkroom 7th December 2023, 04:48 PM
Replies: 19
Views: 4,184
Posted By Lostlabours
I use a company called Genera Lamps, but I buy...

I use a company called Genera Lamps, but I buy full packs as my De Vere uses 4 120v 250w bulbs.

Ian
Forum: Photography in general 1st December 2023, 08:59 PM
Replies: 41
Views: 5,827
Posted By Lostlabours
I think the way this film has been marketed at...

I think the way this film has been marketed at first seemed rather odd. Then when you hear it's still experimental, with a long learning curve (in terms of improvements), it makes sense to market it...
Showing results 1 to 25 of 500

 
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