Whisk itself was acquired by Samsung NEXT in March of this year, after tripling its revenue, achieving profitability and powering more than half a billion recipe interactions per month. Today, a company called Whisk is launching a new meal planning and recipe finding service that helps you better organize your recipe collection, as well as easily shop for recipe ingredients from a range of grocery delivery providers, including Walmart, Amazon Fresh, Instacart and others. Recipe sites are overrun with ads and long-winded personal stories, while many apps ignore the fact that many of today’s consumers want to shop for groceries online, not by making a shopping list to take to the store. You want to photograph a basketball game, and need to stop fast action.Despite the proliferation of recipe websites and apps, finding and organizing the recipes you want to cook has somehow become more difficult over the years. Focus may be a problem, so you need to set your camera for maximum depth of field. You want to photograph people on the street, and know that you have to work quickly. You wish to lower your shutter speed to 30, to add a swirl of colored movement in a Zumba class. Your light meter indicates a shutter speed of 250, f/stop 8. Choosing the ISO number you indicated above, what will be your new shutter speed at f/4? The ISO speed you would choose to obtain that:_.ĩ. You need to gain faster ISO speed, at least three stops. You know this is too slow a shutter speed for sharp pictures ot a volleyball game. You know this means the widest the aperture can open is f/4. You have a variable focal length (zoom) lens marked 1:4. You wish to change your shutter speed to 500. You wish to change your shutter speed to 250. You wish to change your shutter speed to 60. Your shutter speed will be_?Ģ, Indicated f/stop: 5.6. To obtain a shutter speed of 1000, you must set your ISO number at_? Answer: 800, equivalent of one stop more light (more sensitive).ġ. To achieve this, you must change your ISO number. (Two stops less light, to compensate for two stops more light based on change in f/stop.)īut you also want a still faster shutter speed than 500. To compensate, your shutter speed will be_? Answer: 500. You want a more shallow depth of field, so change your f/stop to 5.6. Assuming you wish to maintain the same amount of light striking the film for proper exposure, calculate the comparable numbers for each alternative. Your light meter shows you a combination of f/stop and shutter speed as indicated. Many digital cameras can set half shutter speeds. So if you want to change f/stops, shutter speeds or ISO numbers while maintaining the same exposure, you need to also adjust the other variables. ISO numbers too are measured in comparably: 100 is half as sensitive to light as 200 400 is twice as sensitive as 200, etc. That is, changing your f/stop from, say, 4 to 5.6 (one stop) is the same as changing your shutter speed from 125 to 250. Keep in mind that f/stops, shutter speeds and film/digital sensor speeds are nearly always related by precisely half or double. COMM 242, Advanced News Photography (Photojournalism)
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |