Film and Film Speed – ISO

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Film and Film Speed - ISO

In general, you must choose a camera that can handle how much light. Other factors to consider are the necessity to stop the action or get a deeper range of focus.

There are two main film types: transparency and negative (slide/reversal). One advantage that the majority of negative black and white film can offer is that the coverage of the exposure is higher than slide film.

Negative film in black and white offers a higher degree of contrast than transparency and colour films. Latitude for both colour and black and white films is higher when overexposure is used that can be as high as three stops while giving satisfactory results. The colour slide has less latitude than the majority of negative film and has to be more precise when it comes to exposures. A slight underexposure could be preferred to exaggerate slide film. Colour problems aren’t so easily corrected as negative film. That’s why the correct exposure is crucial when shooting this film.

The advantages of the film made from slides are the saturation of colour and the smooth grains of the film. Printing directly from slides is expensive. A less expensive option is to get your slides digitally scanned and printed on the CD. Choose a reputable digital imaging lab, such as Fuji which employs Fuji Frontier technology for digital image processing. The cost of scanning will differ based on the number of dpi that the image you wish to be taken to be scanned at. The higher the dpi greater the size of the possibility of enlargement.

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Film Speeds/ISO

The speed of the film (ASA or ISO number) is the number that indicates the film’s sensitivities to light. Higher the value, the more sensitive to light. E.g. ISO 200 film is twice as sensitive to light as ISO 100 film. There are four-speed categories in which films are classified. The Low-Speed Films have ISO 50 and under. They are ideal for outdoor use during sunny days and feature extremely smooth grain. Medium-Speed ISO 64-200 perform well on sunny days and with a little bit of overcast as well as indoors using flash. They also feature a high-quality grain that is ideal when high-quality detail is required in your photo. Films with high-speed ISO 250 to 640 perform tremendous both outdoors and indoors. In the outdoors, they let you utilize more shutter speed to stop motion and indoors, they permit the camera to be held even in low light. They also work with flashes, increasing the distance of the flash, as well as giving you a more comprehensive depth of field than films with slower speeds. However, there is a decrease in definition, and a rise in grain size is more apparent. Very high-speed films ISO 800 -6400 are excellent options for photography that is currently in the light for evening sports, stage performances, for example. They are highly grainy and could be beneficial for creating a moody or gritty real-world atmosphere.

Some other things to think about when choosing the correct film include. If you intend to create enlargements that are larger than 10 x 15.5, slow – to medium-speed films will yield the most outstanding results. I.e. definition. 2. If you intend to hold a telephoto lens by hand, you’ll require a high shutter speed. At a minimum, one-stop higher than that of the lens’s length is suggested. In this situation, you might require a film with a higher speed which allows users to boost the speed of the shutter over that of your lens’s focal distance.

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