我攝影技術差,但是我為了別的原因一直對醫學攝影做功課學習 針對矯正醫師的攝影需求 在今年二月(2008 feb)英國的IMI(Institute of Medical Illustrators)剛發表了orthodontic photography 的national guideline(翻譯一下:英國的矯正攝影國家標準) 網站網址是 http://www.imi.org.uk/index.asp 他的guideline是PDF檔 http://www.imi.org.uk/guidelines/IMINatGuidelinesOrthodonticPhotography.pdf
裡頭我部分節錄一下 Cameras For all routine dental photography, all camera equipment in this guide is based around a full sensor CCD, together with a macro lens with a focal length of around 100mm. This combination will ensure the correct perspective, as well as a convenient working distance, is maintained for both the facial and intra-oral views. It is essential that the lens be capable of producing magnifications of up to 1:1. For optimum depth of field, the lens must have a minimum working aperture of at least f22.
Lighting Studio electronic flash is recommended for photographing a patient’s facial and head and neck views. Output with either reflectors or umbrellas should be capable of producing sufficient light for an aperture of at least f16. Ideally, lights should be suspended on a Hi-glide system to allow ease of use and a safe working environment for photographer and patient. Intra-oral photography requires the use of a portable electronic flash unit. For most purposes, a specialised ring flash provides even lighting and with some units, a degree of modelling can be achieved by positioning the flash unit. It is best that the ring flash is attached firmly to the camera lens, providing ease of use and standardised illumination. The ring-flash must be capable of producing sufficient light for an aperture of at least f22 to maximise depth of field.