[EMAIL PROTECTED] wrote:
>To put it simply, when you capture an image with a DSLR camera, you are in >effect directly scanning the image transmitted by your lens into digital >electronic form; you do not need to go through a second process in order to >convert the analog capture on film into an electronic digital capture. The >first generation capture equivalent for film is when you transmit the image >data from the lens to the film; scanning it into digital form later is a >second generation capture. > > > This isn't quite accurate. Digital Sensors actually use analogue sensors. They then translate the information via an A/D converter, to a digital entity which is then either saved as is or further processed as a JPEG. You are correct that this same process occurs with a film scanner, so there are extra translations going on (Film image (and all that entails to get to that point) to electro-optical sensor image to digital file format. > Of course there can be some of this in play as well; but it probably has >more to do with Getty knowing the demands of their clients and wanting to >play it safe by insisting on equipment and processes that they are familiar >with and know will produce that quality rather than taking the risk of >having to spend time sorting through submissions which come from sources, >equipment, and processes that they are not familiar with and cannot be sure >are up to their needs. Sometimes better equipment does produce better and >more reliable results on a more consistent basis. Would you readily accept a >prescription from an unknown drugstore that bore an unfamiliar brand name on >it and was prescribed by a doctor who had a degree from a medical school >that you never heard of and whose license to practice medicine was of >uncertain origins? > > > I would give Getty's requirements more credibility if they didn't limit the digital cameras to certain models and brands, but rather stated a resolution and sensor size (since noise is an issue). Or what about ISO for that matter. A D200 image at ISO 1600 may be equivalent to a smaller (physical sized) sensor at ISO 200 in those terms. Art ---------------------------------------------------------------------------------------- Unsubscribe by mail to [EMAIL PROTECTED], with 'unsubscribe filmscanners' or 'unsubscribe filmscanners_digest' (as appropriate) in the message title or body
