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Description Originally coated for aerial vegetation mapping, Film Washi Z – ISO 400 / 27 – Near Infrared 135 Film is a near infrared sensitive film, offering nice contrast and green shades separation, making it perfect for landscape photography. Specifications Film type: Black & White Film Format: 35 mm Speed: ISO 400/27 Length: 24 Exposures Grain: Low Contrast: Moderate Production process: Industrial coating Base: Polyester, 100 m Spectral sensitivity: Maximum 750 nm Darkroom safelight: Total darkness Original use: Film Washi Z – ISO 400 / 27 – Near Infrared 135 Film is used for aerial photography and mapping : Its extended sensitivity in near infrared spectrum make it possible to separate the different area of vegetation. Recommended use: Perfect for landscape as it will give nice contrasts and green shades separation, even under cloudy weather. Loading: Under shadow to avoid light piping effetc : take 3 blank pictures before starting your roll. Standard sizes: 135 recycled cassette (no DX code) 24 exp. *Use of recycled cassette is not recommended with full automatic/motorised camera. Usage tips: The infrared effect (dark sky and highlight red and green) can be exaggerated by using a red filter. Processing Exposure: 400 iso – Developer: Ilfosol 3 – Dilution: 1 9 – Time: 4.5 mn – TC: 20C Exposure: 400 iso – Developer: Ilfotec RT rapid – Dilution: —- Time: 70s – TC 26C Exposure: 400 iso – Developer: Rodinal – Dilution: 1 25 – Time: 7 mn – TC: 20C Exposure: 400 iso – Developer: D76 – Dilution: stock – Time: 10 mn – TC: 20C Exposure: 400 iso – Developer: Xtol – Dilution: stock – Time: 8 mn – TC: 20C To use with an unlisted developer, for a 400 iso exposure you can use times and dilution of Ilford Delta at 400 iso.