en bruto La revue Art Absolument - Actualite artistique Strobist WALL MAGAZINE Photography techniques: Star trail photography Introduction Since the Earth rotates, the stars are not at fixed places in the sky but appear to move, more or less towards the west. To photograph the tracks the stars make across the sky, all you need is a camera that remains fixed to ground and have it expose for an appreciable amount of time. Such photos can be quite artistic. The stars appear to rotate around both the north and south poles in the sky, of which you generally only see one. Star trail photos are always eye-catching, if done correctly. What you need All you need to photograph star trails is a camera with lens that can do time exposures (on 'B' or Bulb mode), a cable release or lockable shutter release, and a tripod. Any star trail photo needs an exposure time of several minutes up to several hours. The choice of lens depends mostly on the composition you choose. The tripod needs to be sturdy enough to not move by wind and such, otherwise the star trails will not be perfect. Exposure times, aperture and film Variations
ZéroQuatre, Revue semestrielle d’art contemporain en Rhône-Alpes Tips Page Sorry, no technical support is available for my tips and techniques Please report any web-related problems by sending an email to the address listed below. Sorry for the inconvenience, but I will not have the chance to respond to questions relating to these tutorials. For immediate response to your issues and questions, check out the Adobe Forum: forums.adobe.com Also be sure to visit the Adobe TV site for a great collection of information and tutorials: tv.adobe.com Sincerely, Russell Brown russellprestonbrown@mac.com Intellectual property; limited license to users The Materials and Services on this Site, as well as their selection and arrangement, are protected by copyright, trademark, patent, and/or other intellectual property laws, and any unauthorized use of the Materials or Services at this Site may violate such laws and the Terms of Use.
La Paddytheque - Le meilleur de l'art contemporain : peinture, photographie, street-art, vernissages... Four Flash Photography Basics we must know - Guide Numbers Guide Numbers If you meter your flash, either via TTL flash automation, or by using a hand held flash meter, or if you just use the camera's rear LCD and histogram to tweak in your manual flash exposure, then maybe you can get by for awhile without this part right now. It is no big deal if you skip to next page now, you can always come back later. Guide Number is a prime fundamental, related to Inverse Square Law, and will always be important to know. Typically, direct bare flash is much less important for studio lights, because we normally heavily modify their light with umbrellas, softboxes, grids or snoots, whatever. Specifically, Guide Number is a tool for direct flash with manual flash power levels to automatically deal with the Inverse Square Law. Definitions For any given "correct flash exposure" situation, Guide Number is simply numerically equal to the aperture number (like the number 8 in f/8) multiplied by the subject distance (like 10 feet). Converting Guide Number for ISO
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Brooke Shaden : Creating new worlds through images. This week I received an email from a most beautiful soul, asking if I would write about the topic of how to find inspiration when life is getting you down. I’m extremely empathetic and I take on others pain and joy very easily, and after reading her email, I cried for her. And if I can offer any words of advice that might be even 1% useful, well, that is how to contribute to our community. The first thing that I think needs to be clarified about artistry or inspiration or even passion is that it does not have to be who we are. We are artists, we are creative thinkers, but we are so much more than the label “Artist” or “Photographer”. I have found one feeling that consistently crops up when I am going through a rough time, and that is anxiety; the anxiety that I have to create because I have stopped. Have you ever felt that way? If you need to grieve, grieve. That said, there is always a time to get back up and do what you love doing. And so – how is it found? WHAT IS PERFECT?