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Pushing Scala?

Discussion in 'Everything Film' started by Col. Hogan, Aug 20, 2001.

  1. Col. Hogan

    Col. Hogan Well-Known Member

    Has anyone out there ever tried pushing the Agfa Scala b/w slide film to 800 or even 1600? It's normally rated at ISO 200. I don't know whether the latter is even possible. What are the pros and cons of pushing film?
     
  2. Benchista

    Benchista Which Tyler

    Diane, I've only ever rated it at 200. Pushed film generally has lower contrast and higher grain, but allows faster shutter speeds or smaller apertures. I would think it would push very happily to 800 without losing too much (2 stops is generally the limit of "pushability" with most films).

    Nick IRIPN
     
  3. RonM

    RonM Alpha Napper

    Diane,

    Have had no experience of Scala, but checked up data sheet and it can be rated at up to 1600.
    The following are details from the product sheet which may or may not help you?

    "The speed of the AGFA SCALA 200x can be varied in steps by
    pushing or pulling the process. The contrast, maximum density
    and granularity simultaneously vary in comparison to the
    standard process.

    Step Push 1 Push 2 Push 3 Pull 1
    Speed (ISO) 400/27° 800/30° 1600/33° 100/21°
    Contrast increasingly steeper flatter
    Maximum density decreasing increasing
    Granularity increasingly coarse-grained finer

    Applications
    Varying the speed and the contrast is useful in many fields.

    Pushed processing
    a) To increase the speed:
    – with poor lighting / available light
    – with lenses with long focal lengths and / or low power
    – with fast-moving subjects
    b) To steepen the contrast:
    – for dramatic effects

    Reciprocity effect
    Measured exposure time (s) 1/10000 to ½ 1 10 100
    Exposure correction (f-stops) none ½ 1 2

    Exposure latitude
    The exposure latitude depends on the speed chosen.
    ISO 200/24° to ISO 1600/33° ± ½ stop
    ISO 100/21° ± 1 stop"

    Hope this is of assistance

    Regards

    RonM MRIPN
     

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