Talking Stone Film

Film Reviews & Headlines

without any shadow of a doubt we love
movies. big movie releases gross hundreds of millions of dollars and the names of
actors and directors are considered common knowledge but while we certainly love films many of
us overlook one of the most important elements in all of film history the film itself its a medium that’s been
around for well over a century and while these strips of celluloid contains some
of the most well-known images in all of human history most of us are in the dark
when it comes to film this begs the question what is film well let’s break
it down and look at a different components these little cut-outs called
perforations run along the edge of the strip they provide the camera a way to move to
film around easily and accurately to keep an even spacing between images some film contains a stripper recording audio from the camera this is either a
magnetic strip or an optical waveform it’s worth noting though that when
filming motion pictures audio is recorded to a separate device frames of
the rectangles that contain the image and just like how megapixel determine
the size of the digital image the size of these frames impact how big the image can be printed or projected before lose quality so the frames
perforations and audio strips are often rearranged to make space for a bigger
image super 8 film in comparison to standard 8mm film for example shrinks the
perforations on the edge to make space for a larger image across the width of
the stock but there’s also the tried-and-true just make it bigger
approach to film stocks 16 millimeters the next size up with standard 16 and
super 16 being the popular formats although both are actually shot on the
same single perf film 35 millimeter is probably the most
notable film it’s the standard for hollywood as well
as the size of the film in those little canisters that you buy for still
photography but while the size is the same they’re both different format
70 millimeter film is the largest available film stock for the biggest of
the big screens will know that this IMAX 70 millimeter film runs
horizontally rather than vertically because turn the frame sideways is a
more efficient layout than vertical meaning the extra space can be spent on making
the frames even larger now there are many different sizes and configurations
of film modern film stock all works the same way the film itself is composed of
several different layers of filters barriers and light-sensitive emulsions
but I’m going to boil it down to just its two main part the key to what makes them
work as a light sensitive coating on the film composed of tiny little grains of
silver halide when struck by light these grains change from one state to another
when developing film has been exposing a camera the chemical bath removes only the grains that have been changed by interaction with light and the more grains the get
removed from an area the whiter that area will become and more grains that get left behind the
darker that part of the image will be now this is fine for plain old
black-and-white film but to record color will need three of these light-sensitive
layers each of these layers will be sensitized only react with light of a
single color so we’ll need one blue one green and one red layer all stacked
together in that order just like you can mix primary colors of paints
together to make other colors red green and blue are the primary colors for
light is seen by the cones in the human eye now since we have separate
recordings of the red green and blue information we can recombine these
to get the full color image this is a really cool topic by itself but I didn’t
have time to go into much detail so if you want to learn more about how your
kindergarten teacher lied to you about what primary colors are or why film
negatives are such weird colors go check out the bonus video these emulsion
layers as well as some additional filters and barriers are all sandwiched
together in a flexible transparent material in the early days was in nitro
celluloid but this proved to be explosive I mean it literally chemically
related to gun cotton in early military-grade explosive this this made the safer acetate-celluloid films a much welcomed creation although put the
silver halide it still technically is flammable acetate based film stocks were
around for a good portion of the century before film manufacturers began to favor
of polyester plastic is the base starting in the 1990s and there you have
it all these components working together create the height of image capturing
technology of the twentieth century and while other technologies of its era
have either been upgraded or replaced by newer technologies film has survived
relatively unchanged and even more impressively while more and more movies
are being produced with digital cameras film is still here and for the time
being a viable alternative to the best digital cameras we have available today
but film is going away don’t be sad though digital is a worthy
successor and it may very well go on to build a legacy as lasting his film but
while the tools may soon be going digital the people who use them will still be

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