School Photographic Supplies

We supply Film, Paper & Chemicals, Darkroom Supplies & Inkjet Paper to Schools in Government, Catholic & Private Sectors

NSW Vendor ID :100309232

INFORMATION for Newcomers to Film Processing

Film must be loaded into processing tanks in total darkness. A changing bag is a light tight 2 layer fabric bag with Zips & arm inserts in which you can place tank & reels & film for loading.

The film tank which is light tight, can then be removed & processing can proceed under room light.

Chemicals are poured into & out of tank in following order-developer-stop bath-fixer –wash- thenrinse with wetting agent. Film is then hung to dry. Chemical activity of the developer varies with temperature & agitation & the dilution & freshness of developer. To get consistent results, use fresh developer, use the same agitation pattern & the same dilution, measure the temperature every time & increase the developing time to reflect falling chemical activity at lower temperatures & decrease time at higher temperatures. Times for Ilford films are based on 20 degrees Celsius.

A time temperature chart is available for above corrections.

The purpose of the fixer is to remove unexposed silver halide. It has a certain capacity before it becomes exhausted. Once the fixing stage is complete you can work in daylight. Follow the film manufacturer’s instructions including those on washing & don’t try and economise by scrimping on chemicals. Use fresh developer so you don’t get poor quality negatives & don’t exceed fixer capacity, as this can lead to stained negatives. Wet film should be handled with care to avoid damage.

PROCESSED FILM

Negatives can be scanned for digital storage & printing.

Or cut into strips & stored in archival negative pages for traditional printing in a darkroom.

DARKROOM PRINTING Black & White

In the commercial world Inkjet prints & digital files have replaced almost all wet process silver halide printing. It still has a place in art & education, but the product range & depth of supply has fallen in line with demand.

We supply essential consumables such as photo graphic papers & chemicals

Supplying stock in good condition is very important. Popular items are stocked in Australia & Slower lines are stocked in Europe or UK & imported by the Australian import agent as required. To avoid delays, place your orders in advance of your need & where possible stick to popular products.

THE PROCESS - Information for beginners

This is based on the use of Photographic Paper which similarly to film is light sensitive. It is less sensitive than film & colour blind to certain wavelengths of light. This enables it to be used in a Darkroom, which is essentially a lighttight room equipped with an appropriate source of coloured light, called a safelight. A print is created by using an enlarger to project light through a negative onto photographic paper. Trays are use, one each for developer, stop bath & fixer to process the print, which is then washed & dried.

A PHOTOGRAM is created by placing objects e.g. leaves or flowers etcon top of photographic paper & very briefly exposing it to light in a darkroom & then processing the paper as you would a normal print.

Photo paper can also be used inside a pinhole camera & processed in a darkroom.

Photographic Papers

Photographic papers were originally made by applying a photographic emulsion to a paper base. Most currently available papers now have a PE base,also described as RC or resin coated. This reduces washing time & improves dimensional stability.

The Contrast of the paperis best described by grade numbers from 0 to 5. Grade 5 is extreme with strong blacks & bright whites & a limited tonal range in between. Grade 0 is the opposite- lacking in contrast, blacks & whites arenot as strong& there is a very wide range of tones in between. Grade 2 to 3 is in the middle with reasonable tones throughout.

Photographic paper was for many years supplied as individual grades which required photographers to either produce accurate negatives, that would print well on a grade 2 or grade 3 paper or carry a number of boxes of paper of different grades.

Ilford Multigrade paper shave replaced the old single grade papers. These modern papers are sensitive to 2 colours & the mix of colours determines the grade. Special filters, which fit in an enlarger filter drawer, are available to simplify the process. So you can print from grade 0 to grade 5 with one box of paper by selecting an appropriate filter.

PHOTOGRAPHIC PAPER – MULTIGRADE 1V RC supply & price list of popular paper sizes

There are 3 surfaces

  1. Pearl 44M - popular lightly textured surface
  2. Gloss 1M - popular traditional surface
  3. Satin 25M – a matte un-textured surface ( less popular than 44M or 1M)

CHEMICALS for PRINT PROCESSING

Information for beginners: The process is similar to negative processing using developer, stop bath, fixer & wash. You should for best results use a dedicated film developer for negatives & a dedicated paper developer for prints. The fixer is common to both processes but keep the fixer for prints separate from the solution you use for film.

SAFELIGHTS

Safelights in existing darkrooms are likely to consist of a housing with a plastic or glass filter fitted & an internal low wattage bulb. The housing s are not available but we can at present source the 902 10”x8” safelight filter used for Multigrade printing.

Safelight bulbs, (basically a low wattage incandescent bulb with a red coating) are no longer manufactured by Philips. However LED light sources can be use. Either low lumen red LED’s or LED’s in a housing with Red filter.

A small safelight with an internal bulb & red filter is available. This is designed to sit on a shelf or bench & plug into 240V socket.

ENLARGER BULBS

Photocrescenta bulbs used in Meopta enlargers have been discontinued due to low demand & a worldwide move to replace incandescent lighting with newer light sources. The original bulbs were 240V 75W for the old round head enlargers & 240V 150W with an E27 screw thread base for the more common & later square headed enlargers such as popular Axomat 5.

You may be able to source a replacement bulb online or from a specialist lighting supplier.

In looking for a replacement bulb get the same voltage, wattage & base & look for a frosted bulb without any writing on bulb face. Check carefully that the physical dimensions suit your enlarger & that the light output is even on the baseboard.

Note: if you are considering a LED source then bulb shape lamps with E 27 base are available. Note that a 9.5W LED bulb = 75 watt incandescent. 3000 Kelvin would be suitable.