 |
41% off (Sale price $75.00, Reg. Price $128.00) :: Three options available $75 for a two-and-a-half-hour city photography tour for one person ($128 value) $145 for a two-and-a-half-hour city photography tour for two people ($256 value) $215 for a two-and-a-half-hour city photography tour for three people ($384 value)Exposure: Let the Light Shine inWhether creating a glossy print or a digital JPEG, photography is still all about capturing light. Check out Groupon’s examination of exposure to explore one tool for getting the perfect image.As complex as it seems, photography is a simple phenomenon requiring only light-sensitive material inside a dark box and a hole with a shutter. As the shutter opens, light streams through the lens, exposing a piece of film or an SLRs digital sensor to the image outside the box. Thanks to that exposure, the once-fleeting light becomes a photograph, rendered in precise detail and preserved for all posterity. The exact exposure depends on the shutter speed, which can last as short as 1/2500th of a second to as long as several hours. A faster shutter speed captures faster action but requires more light and therefore a larger opening—or aperture—which shortens the field of focus. Conversely, a slower shutter speed needs a much smaller aperture to capture the same amount of light, though this also exposes the camera to the image for a longer time, making the stars look like lines drawn across the sky or a waterfall look like a solid white curtain draped from a giants towel rack. Of course, a proper exposure is a matter of balance—too much time in bright light, and the photograph will wash out. Not enough time in the darkness, and the world will be nothing but shadows.
|
In addition to coupons, we offer tens of thousands of deals in the following spaces:
Drop us a line to recommend improvements. Thanks.
Note: We may earn a commission when you utilize one of our coupons to make a purchase.
