Firstly, the environmental characteristics of operating room are analyzed.
1, the venue is limited-because photographers don't need a lot of activities, it won't be too tired to bring a portable DC, micro-single or larger SLR, so it should be said that they are all suitable.
2. The operating room is dimly lit-although there are shadowless lights and other lighting in the operating room, because the curtains are pulled up, natural light does not come in, and the overall illumination is not enough. And in order to avoid interfering with the operation, it is forbidden to use flash during the operation. All this means that you need to choose a lens with a large aperture as much as possible to get the ideal effect.
3. During the operation, besides the patients, there are other doctors, nurses, anesthesiologists, etc. It's all moving. In order to get a clear image, a large aperture is needed to ensure it.
4. During the operation, the camera should not be too close to the operation position, otherwise it may affect the normal operation, so the lens must have a telephoto.
5, the operating room space should not be too large-if you want to get a panoramic picture, you must have a wide angle-considering 4 and 5, it is more suitable to use a zoom lens than a fixed focus lens.
6. Video shooting may be needed during the operation-a camera with video function is needed.
To sum up, although the operating room has its own characteristics, it is not a very harsh environment, and most cameras and lenses are competent.
From the choice of camera, it is best to use a SLR camera, and the shooting effect is more guaranteed. It should be said that the whole width or the width cutter can meet the requirements.
From the lens point of view, zoom lens is the best choice, because there is no need for large wide angle and large telephoto, and lenses with focal lengths of 24-70, 24- 105 or 17-85 are suitable.
There are many cameras and lenses that meet these conditions, and even many card machines can meet them. From a professional point of view, SLR is better. For example, Canon 5DII+24- 105 4.0 or 1D+24-70 2.8 are all suitable.
I hope my answer can help you.