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Silver halide has been used in photographic film and paper for over 150 years and remains a vital ingredient found in all high-quality products. Silver halide crystals in gelatin form part of an emulsion which is used to coat the paper or film. On exposure to light (i.e. in a camera or darkroom), the crystals react turning into silver and forming the image. Silver halide prints There are many ways to produce black & white prints with options varying in quality. Traditional black & white silver ha...

Filters have long been a popular accessory for photographers and offer a number of different functions or effects. In both analogue and digital photography it is possible to recreate some of these in the darkroom or digital darkroom. However there has always been a benefit to getting it right in camera. In black & white photography, colour filters in particular are useful as they can control how the colours in a scene are reproduced as greys. Normal black & white films are sensitive to all wavele...

ILFORD PHOTO technical downloads On this page we have collated all of our technical information in one place. Whether you are looking for technical data sheets, our film processing chart or information relating to contrast control for our MULTIGRADE Papers this is where you will find it. All relevant technical information can also be found at the bottom of each specific product page. Technical Data Sheets Here you will find links to all technical data sheets for our film, paper and chemical products. ...

Our Address ILFORD PHOTO Ilford Way Mobberley Knutsford Cheshire WA16 7JL Directions: Click here for map and directions to the Mobberley site (PDF). Email:  If you can't find the answer that you are looking for in our FAQs pages then please e-mail us  - Please note that at this current time, there may be a delay in us responding to your email. Phone +44 (0)1565 650000 Registered office: HARMAN technology Limited, Whittington Hall, Whittington Road, Worcester, WR5 2ZX, England. Register...

General health and safety advice This section provides advice to our customers on the safe handling, use and storage of our photochemical solutions, best practice for waste disposal and specific advice to women who are pregnant or breastfeeding a child. If you are looking for information on the chemical safety of HARMAN photochemistry solutions, please refer to the Safety Data Sheets (known as SDS or MSDS) 24 HOUR OHES emergency line for advice on chemical incidents Safe working practices It is essen...

Retouching is normally done to remove blemishes from the negative or the final print. It can also be used to change the tone or remove unwanted detail.  As retouching can be difficult, care is required. Advice for retouching The most risky retouching techniques involve removing parts of the image, by bleaching, cutting, or scraping with the edge of a sharp knife. The addition of density is generally less risky, and can be done using dye, paint etc, or a suitable soft pencil. When retouching prints from o...

A black border often enhances a print and does not involve any sort of mounting or overlay. Ink or tape borders The easiest way to produce narrow black borders is to rule them with a pen directly onto your finished print: an India-ink pen gives the most solid line, but most permanent (all surface) spirit based markers are much less expensive and will do the job. For slightly wider black borders, narrow, self-adhesive strips are available from graphic arts suppliers. Supplied in dispensers, of various w...

Mounting your Prints Even the most stunning print can look better when it has been properly mounted. Mounted prints are also better protected as they are kept flat with the image separated from the immediate surroundings by unobtrusive margins. There are no hard and fast rules about mounting prints; the most suitable results will depend on individual preference, the nature of the image, the intended use and other circumstances. It is recommended that only boards and other materials intended for the p...

Testing your Safelights Safelights are an essential component in any darkroom set up. We recommend testing them annually, as ageing can change the transmission characteristics of the filters. This can cause visible fogging of the print or, more likely, a subtle but noticeable drop in contrast. When setting up your safelights always read the instructions and don't exceed the recommended bulb wattage. Fitting a brighter bulb or mounting your safelight too close to your developing dishes,  may cause degra...

Split grade printing The version of split grade printing described here is that taught to me by the ILFORD head printers, Mike Walden and Terry Offord, and is the simplest, fastest way to make good darkroom prints from pretty much any negative. (The exception is really underexposed negatives to print these you usually only need high contrast). This is a very powerful technique that can be used routinely with variable contrast (VC) papers, such as ILFORD MULTIGRADE. It makes use of the differing performa...