In the context of the art, architecture, and culture of Ancient Greece, the Classical period, sometimes called the Hellenic period, corresponds to most of the 5th and 4th centuries BC (the most common dates being the fall of the last Athenian tyrant in 510 BC to the death of Alexander the Great in 323 BC).his Classical period saw the annexation of much of modern-day Greece by the Persian Empire, its subsequent independence, and it also had a powerful influence on the Roman Empire and greatly influenced the foundations of western civilization.
Photography gels are precisely colored acetate sheets (overhead transparencies) used to alter the color of lights.There are different reasons for doing this, including for aesthetic effects and contrast reasons.hanks again-I had flash on floor behind me with red gel, flash on keyboard bounced off white paper on screen, and third flash with a home made snoot pointing to Apple logo-I made three A4 pages and got 27 gels for $4.50 Cdn.
As the size of lighting gel required depends entirely on the type of light with which it will be used, gels usually come in rolls or sheets that are then cut to the correct size. This is especially true in photography, where often only a very small amount of gel is required for use with a hotshoe flashgun.he key to using lighting gels well is to use them subtly and in moderation. Unless you are using a lighting gel for colour correction, there are few times when the coloured light should be the dominant illumination in an image.