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Search: Posts Made By: JOReynolds
Forum: Colour printing techniques Yesterday, 11:10 PM
Replies: 34
Views: 767
Posted By JOReynolds
In the early 1960s Martin Forscher at...

In the early 1960s Martin Forscher at Professional Camera Repair in New York City put a 120mm Rodenstock Imagon into a simple Kodak focusing barrel for Horn-Griner. It was used on a Hasselblad 1000F,...
Forum: Colour printing techniques Yesterday, 10:42 PM
Replies: 34
Views: 767
Posted By JOReynolds
A diffuser

I still have the frame of a enlarging diffuser which I made by bending plastic-coated coathanger wire into a 90mm ring, with a handle like a frying pan. I folded back the excess handle wire to make...
Forum: Monochrome Film 25th May 2020, 08:48 AM
Replies: 38
Views: 1,242
Posted By JOReynolds
An apology

Sorry - I should have read all the posts before commenting. I didn't at first pick up that the image I congratulated was a scan from a negative, not a print. But I still think it's brilliant.
Forum: Monochrome Film 25th May 2020, 08:32 AM
Replies: 38
Views: 1,242
Posted By JOReynolds
That is a glorious print - unique to silver...

That is a glorious print - unique to silver photography, not possible with Photoshop. Viewing it on-screen as a scan, I don't think a pre-war silver-rich emulsion would have affected this particular...
Forum: Colour film 22nd May 2020, 09:11 AM
Replies: 11
Views: 241
Posted By JOReynolds
Yes, you did go wrong there. The bleach/blix acts...

Yes, you did go wrong there. The bleach/blix acts as a stop bath, arresting development. Your warm water rinse allows development to continue, effectively increasing the dev time. This technique is...
Forum: Darkroom 20th May 2020, 05:05 PM
Replies: 12
Views: 305
Posted By JOReynolds
[QUOTE=Albert Karl;133331]2. After a short period...

[QUOTE=Albert Karl;133331]2. After a short period of familiarisation you will find that the front-of-baseboard adjustment wheels make autofocus unnecessary - you focus as you change the...
Forum: Photography in general 5th May 2020, 03:43 PM
Replies: 11
Views: 292
Posted By JOReynolds
Any comments on Ffordes new website structure?...

Any comments on Ffordes new website structure? It's a while since I bought anything from them, but the last time I tried to research a purchase I almost gave up.
Forum: Photography in general 3rd May 2020, 09:48 PM
Replies: 6
Views: 165
Posted By JOReynolds
Sinar used to sell a clutch-pen for Chinagraph...

Sinar used to sell a clutch-pen for Chinagraph 'leads' that was intended to calculate the increase. It was included in the camera-lens-darkslides package when I bought a 5 x 4" Norma, new, in about...
Forum: Photography in general 3rd May 2020, 02:59 PM
Replies: 6
Views: 143
Posted By JOReynolds
research into Bromide Drag

Bromide drag is very visible on some early cinema film - that's the era before the first world war. In those days film was loaded onto a huge cylindrical wooden frame which was rotated in a trough -...
Forum: Filters 3rd May 2020, 02:01 PM
Replies: 6
Views: 208
Posted By JOReynolds
Yes, 50% deionised/distilled water and isopropyl...

Yes, 50% deionised/distilled water and isopropyl alcohol blend is good. Be careful what you use to apply it - there are all sorts of nasties in tissues and wipes. A freshly-washed (without fabric...
Forum: Photography in general 3rd May 2020, 01:53 PM
Replies: 19
Views: 446
Posted By JOReynolds
I am not wealthy but it seems that a modest price...

I am not wealthy but it seems that a modest price increase is a small expense to ensure that Ilford continues in business. Where else shall we obtain our materials?
On looking at the Kosmofoto site...
Forum: Darkroom 3rd May 2020, 01:32 PM
Replies: 4
Views: 130
Posted By JOReynolds
The DUKA safelight delivers remarkably high...

The DUKA safelight delivers remarkably high illumination while remaining 'safe' with colour paper because its emission (sodium line pair, approx 590nm) falls conveniently part-way between the green-...
Forum: Equipment miscellaneous 20th April 2020, 04:33 PM
Replies: 1
Views: 196
Posted By JOReynolds
Epson Perfection 3170 reflection/transmission scanner

Scanner no long needed. Little used. Was regarded as pinnacle of perfection in its day. Includes holders for mounted slides etc. Any interest? Free - shipment at cost.
Forum: Filters 20th April 2020, 03:23 PM
Replies: 10
Views: 387
Posted By JOReynolds
I have a softar 2, used once. I had previously...

I have a softar 2, used once. I had previously used a UV filter with circles drawn with gum arabic and a dip pen. Somewherei have a lens in a Hasselblad BAY mount with an array of blobs on the glass....
Forum: Cameras - medium format 20th April 2020, 03:15 PM
Replies: 12
Views: 306
Posted By JOReynolds
Bill Cowan’s formula below is exact, even for...

Bill Cowan’s formula below is exact, even for asymmetric lenses, because it takes into account the increased distance between the lens rear node and the film plane.
My 150mm F/4 is an excellent lens...
Forum: Colour film 28th March 2020, 02:11 PM
Replies: 5
Views: 262
Posted By JOReynolds
Separate bleach and fix

One of the advantages of a separate bleach and fix for film is that the solutions need no special storage (unlike developer and bleachfix). RA-4 was designed as a combined bleach+fix from the start....
Forum: Monochrome Film 28th March 2020, 01:32 PM
Replies: 27
Views: 826
Posted By JOReynolds
The kink

Some years ago I did some detailed densitometry on MGlV RC and noted a kink in the curves around the mid-point (D=about 1.0) and assumed that it was my fault or an anomaly in the stepwedge. I...
Forum: Photography in general 14th March 2020, 05:50 PM
Replies: 10
Views: 351
Posted By JOReynolds
Watch it - this kind of knowledge will get you a...

Watch it - this kind of knowledge will get you a job in the Prime Minister's cabinet, like Lynn Truss.
Forum: Equipment miscellaneous 13th March 2020, 10:22 PM
Replies: 8
Views: 426
Posted By JOReynolds
Wait for a sunny day in mid-June and take...

Wait for a sunny day in mid-June and take readings at midday. This is the reference. Your meter, set at the appropriate film speed, should then indicate the same exposure time and aperture shown in...
Forum: Equipment miscellaneous 13th March 2020, 10:06 PM
Replies: 4
Views: 235
Posted By JOReynolds
LED safelight

592nm is a bit close to the green spectral sensitivity of Multigrade IV and V. Aim for something redder than 610nm.

Suitable red LED lamps do not need to be in a filtered enclosure - in fact a...
Forum: Darkroom 6th March 2020, 10:26 AM
Replies: 40
Views: 1,007
Posted By JOReynolds
That's not the point. I don't recollect any of...

That's not the point. I don't recollect any of the gurus suggesting filtering below the lens. The blue-green filter goes between the lightsource and the negative, which filters out the distracting...
Forum: Darkroom 5th March 2020, 05:16 PM
Replies: 40
Views: 1,007
Posted By JOReynolds
Years ago I encountered some technicians in a...

Years ago I encountered some technicians in a police lab, testing lenses between murders (producing books of evidence photos for murder trials kept them busy in bursts). They reckoned that, for B&W,...
Forum: Colour film 5th March 2020, 09:04 AM
Replies: 14
Views: 654
Posted By JOReynolds
Archiving colour film

Negatives are worth archiving as well as slides. The colleague I mentioned above asked me whether Negative Lab Pro (at $99) is any better than Photoshop > Adjust >Invert. I have no idea. Any...
Forum: Colour film 2nd March 2020, 12:17 PM
Replies: 14
Views: 654
Posted By JOReynolds
Digitising slides

My colleague is 'digitising' his slide collection with an enlarging lens, a cardboard tube and tape, using a mobile phone as a lightbox.
I've not seen the rig but the results look fine.
Forum: Colour film 2nd March 2020, 12:14 PM
Replies: 14
Views: 654
Posted By JOReynolds
One of the problems with d*** media is one of...

One of the problems with d*** media is one of archival storage. Slides, as a storage medium, lasted from the 1930s until 2010. That's eighty years! The Compact Disc (1982) and DVD (1995) have lasted...
Showing results 1 to 25 of 500

 
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