CRI 198 M8

• Emulsion Speed - it is the measure of photographic films sensitivity to light determined by sensitometry and measure various numerical scales
• AMERICAN STANDARD ASSOCIATION - a film with an arithmetic value of 400
• Deutche Industri Normen - in this system an increase of 3° double the sensitivity of the film
• International Standard Organization - expressed in the combined arithmetical and logarithmic values
• Slow Film - iso 100 or 200 film speeds are best for bright lightning conditions and outdoor photography
• Medium Speed Film -  photographs can be taken without the need for high amounts of lighting and moving subjects can be photograph with ease
• Fast Film - film will result in the graininess photographs but it is great to use when shooting fast moving subjects in low light conditions.
• Super Fast Film - permit picture taking in extreme low light conditions and some are termed surveillance films
• Spectral Sensitivity - it refers to the color sensitivity.
• Granularity - refers to the size of metallic silver grains
• Color Film - is a type of photographic film that is designed to capture and reproduce images in color
• Blue Sensitive -  this is the top layer of color film that is primarily sensitive to blue light
• Green Sensitive - this is the middle layer of the color film that is sensitive to green light
• Red Sensitive -  this is the bottom layer of the color film that is sensitive to red light
• Blue Sensitive Recording Layer -  consisting of gelatin in which silver salts and the color coupler are embedded
• Adhesion Substratum - the base or support is usually made of cellulose triacetate or polyester
• Anti Halation Layer -  serve as an anti curl layer
• Color Reversal Film -  commonly called slide film or positive film creates opposite or negative film or black and white film
• Color Negative Film - known as color print film and when it is come to coloration color negative film yields true to life colors and contrast
• Latent Image - invisible image left by the action of light photographic paper has not yet developed
• Contrast - difference between the darkestone and the lightest stone in a negative,print,slide
• Density - in a negative or slide density relates to the amount of developed silver in area and is a measure of the " light stopping power" of that area
• Emulsion -  it is considered as heart of the film coated on a transparent base for film
• Orthochromatic Film - Sensitive to all colors except red
• Minicopy Film -  Film with limited enlargement capability 
• Polaroid Film - A special type of sensitized material that produces a photograph immediately after exposure. 
• Color Film -  All film ending in "COLOR". 
• Color Negatives - for prints, ends in word"COLOR"
• Color Transparency - for slides, ends in the word "CHROME". 
• Color Infra-red Film -  A special type of film which is sensitive to infra-red radiation. 
• X-ray Film -  A material which is sensitive to x-ray region of electromagnetic spectrum 
• Monochromatic Film - Because of its limited color sensitivity has no use in regular photography 
• Orthochromatic Films -These are sensitive to ultra-violet, violet, blue, green and yellow portions of the spectrum.They do not accurately reproduce the relative brightness of the subject of a subject as seen by the naked eye. 
• Panchromatic films - These are sensitive to all color of the visual spectrum to assist in the selection of the correct film
• Gelatin Anti-Halation Layer- this layer prevents light from passing back through the emulsion layer once it has already passed through. 
• Anti-Curl Backing - this layer stabilizes the laminate to prevent it from curling. 
• Adhesion Layer  -  this layer is used to bond different layers together. 
• American Standard Association - Rating This is expressed in arithmetical value. 
• Deutche Industri Normen - Rating - This is expressed in logarithmic Value
• International Standards Organization - This is expressed in the combined arithmetical and logarithmic values.