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"Howe, Mike" wrote: > > I am looking to buy a reasonably priced digital camera for condition surveys > of (mainly) palaeontological specimens when they are being loaned from our > collections. Following trials with a few cameras, I believe that 2.1 > Megapixels should provide adequate resolution, but I have found the > automatic focussing (even on the macro photography setting)to be very hit > and miss. Can anyone suggest tricks to improve the focussing, or camera > models where this is not normally a problem? > > Many thanks, Mike There are so many models of digital cameras it is hard to guess at the problem. Here are a few things to keep in mind. In many of the "point and shoot" digital camera models, the view finder is not through the lens. It is a separate optical system. This is has little effect for long-shots but for close-ups has a noticeably difference view compared to the lens. This also affects focusing. You may be looking through the view finder thinking that you are focusing on one point when the camera is using another. Try framing and focusing using the LCD. This uses much more battery power (and is practically useless in sunlight), but will let you see the same view as the lens. Also, most models will auto focus when you slightly depress the shutter button. This usually creates an audible sound. Remember to auto focus before fully depressing the shutter. Sorry if this is all too basic of info. -- Dr. Pierre A. Zippi Biostratigraphy.com 7518 Twin Oaks Court Garland, TX 75044 USA paz@biostratigraphy.com http://www.biostratigraphy.com paz@pazsoftware.com http://www.pazsoftware.com
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