Ilford SFX 200 Handleiding

Ilford Niet gecategoriseerd SFX 200

Lees hieronder de 📖 handleiding in het Nederlandse voor Ilford SFX 200 (6 pagina's) in de categorie Niet gecategoriseerd. Deze handleiding was nuttig voor 31 personen en werd door 2 gebruikers gemiddeld met 4.5 sterren beoordeeld

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2018
HARMAN technology Limited
TECHNICAL INFORMATION
SFX 200
BLACK AND WHITE CAMERA FILM WITH EXTENDED RED
SENSITIVITY FOR CREATIVE PHOTOGRAPHY
ILFORD SFX 200 is a medium speed black and white camera film for creative photography. It has extended
red sensitivity (up to 740nm) and is especially suited for use with a red filter to create special effects. For
example, by using a very deep red filter, skies can be rendered almost black, and most green vegetation almost
white. Its unusual tonal rendition ensures interesting results for a range of subjects, including portraits,
landscapes, townscapes and architecture.
Best results are obtained in bright sunshine, or in the studio under tungsten lighting.
SFX also has full panchromatic sensitivity to ensure good pictorial contrast with or without the use of a filter. It
has a wide exposure latitude and is pers. It has a wide tonal range. compatible with all normal develo
AVAILABILITY
SFX 200 film is coated on 0.125mm/5-mil grey acetate base which gives good halation protections.
SFX 200 is available in 36 exposure DX coded cassettes, suitable for all 35mm cameras.
SFX 200 is also available as120 roll film, edge numbered 1 to 19.
EXPOSURE RATING
SFX 200 has a speed rating of ISO 200/24° to daylight.
The ISO speed rating was measured using ILFORD ID-11 developer at 20°C/68°F with intermittent agitation in
a spiral tank.
It should be noted that the exposure index (EI) range recommended for SFX 200is based on a practical
evaluation of film speed and is not based on foot speed, as is the ISO standard.
SPECTRAL SENSITIVITY
Wedge spectrogram to tungsten light (2850K)
Page 2 of 6 No
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S
FX 200Technical Information
USE OF FILTERS
SFX 200 film can be used with yellow, orange or red filters, but the effect seen will depend on its transmission
characteristics. The redder the filter, the more dramatic the effect. With very dark filters, exposure times can be
very long, so the use of a tripod is recommended. Below is a guide to filter factors for various filter colours.
Filter Factors
Filte
r
Kodak Wratten
(or equivalent)
Filter Colou
r
Filter
Factor
Exposure
Increase (Stops)
3 Very Light Yello
w
2 1
8 Yello
w
2 1 â…“
12 Deep Yello
w
2.3 1 â…“
15 Very Deep Yello
w
2.4 1 â…“
21 Orange 2.4 1 â…“
23a Reddish Orange 2.5 1 â…“
25 Red 2.8 1 ½
29 Deep Red 3 1 â…”
89B Very Deep Red 16 4
LOADING THE CAMERA
SFX 200 must be loaded in subdued light. Unlike true infra-red film, it is not necessary to load it in total
darkness.
FOCUSING
With some lenses, red light focuses at a slightly different point to other visible light. With these lenses, there
may be a shift when focusing in white light compared with red light. However, it is almost impossible to focus a
camera with a deep red filter in place.
With short to moderate focal length lenses, this difference can easily be accommodated by stopping down to
the smallest working aperture. Some lenses, particularly apochromatic (APO) designs, may need no correction.
EXPOSURE
A certain amount of experimentation is needed when first using this film. As a guide, bracket exposures by +/-
2 stops from the TTL reading with the filter in place, or the meter reading with the filter factor applied.
Note The TTL metering on some common cameras can under expose by up to 1 1/2 stops with deep red or
orange filters in place.
If you want to check the TTL metering system on your camera before starting, set the metering system of the
camera to EI 200/24, and with your filter in place – make a series of exposures up to ± 2 stops from the
indicated exposure. After processing, decide which is the best negative and re-set the camera if necessary. As
an example, the correct exposure in bright sunlight with a deep red filter is around 1/30 th second at f5.6.
CHARACTERISTIC CURVE
SFX 200 film developed in ILFORD ID-11 stock for 10 minutes at 20ºC/68ºF
with intermittent agitation.
Page 3 of 6 No
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FX 200Technical Information
PROCESSING
SFX 200 can be processed in all types of processing equipment, including spiral tanks, rotary processors, deep
tanks and automatic processors. Standard capacity figures and replenishment rates can be maintained.
SFX 200 is very robust in processing and will tolerate less than ideal processing conditions. Also, it will not
contaminate the processing chemicals.
DEVELOPMENT TIMES
The table on page 4 gives development times for both manual and machine processing. These times will
produce negatives of average contrast – suitable for printing in all enlargers.
The development times are intended as a guide and may be altered if a different result in needed.
For manual processing in spiral tanks and deep tanks, the development times are based on intermittent
agitation. Where continuous agitation is used for manual processing, and for use in rotary processors without a
pre-rinse - reduce the spiral tank development times by up to 15%.
Generally, a pre-rinse is not recommended, as it can lead to uneven processing.
CHOOSING THE BEST ILFORD DEVELOPER FOR THE
OB
Manual processing Spiral tank, dish/tray, deep tank
Including rotary processors
Liquid Powde
r
Best overall image quality
EI 200/24
EI400/27
EI800/30
ILFOTEC DD-X
ILFOTEC DD-X
ILFOTEC DD-X
ID-11 (stock)
ID-11 (stock)
ID-11 (stock)
Finest grain ILFOTEC DD-X PERCEPTOL
Maximum sharpness ILFOSOL 3 (1+9) ID-11 (1+1)
Maximum film speed ILFOTEC DD-X MICROPHEN (stock)
Economy ILFOTEC LC29 (1+29) ID-11 (1+1)
MICROPHEN (1+1)
One
-
shot convenience ILFOSOL 3 (1+9)
ILFOTEC DD-X
ID-11 (1+1)
MICROPHEN (1+1)
Replenishable ILFOTEC DD-X ID-11
Machine Processing
Dip and dunk
ILFOTEC DD
ID-11
Best overall image quality (liquid) and long tank life
Best overall image quality (powder) and long tank life
Short leader
ILFOTEC RT RAPID Rapid processing, best o
v
erall image quality and
long tank life.
Roller transport ILFOTEC RT RAPID Rapid processing

Product specificaties

Merk: Ilford
Categorie: Niet gecategoriseerd
Model: SFX 200

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