Architectural photography offers many different challenges to the photographers. Buildings can be appealing to photograph, but the key in attaining good photographs is understanding the image distortion and finding the right time to capture the image of the building.
Image Distortion: We see lines running vertical and horizontal when we look at a building. These lines appear distorted and make your image look warped. It occurs when we choose the wrong equipments and wrong point to take the picture.
Architectural photography is not only about photographing the exterior of the building. Pictures of the interior of buildings are also in great demand. You should take care while photographing the interiors as the elements may distract the final image result.
Cameras and Equipments:
Using a SLR camera can cause a certain amount of distortion in your image. You can limit the image distortion by shooting directly in front of the building. View cameras are best for architectural photography as they allow you to click from any angle as well as minimize the image distortion. Selecting the best lens is also important as it results in distortion. Avoid shooting too near to the base while shooting a tall building. You can use Nikon D300 (12MP) or Nikon D200 (10.2 MP) cameras for architectural photography.
Some of the key features of Nikon D300 are a self cleaning sensor unit, auto-focus tracking by color, auto-focus calibration, scene recognition system, Active D-Lighting, Shutter life 150,000 exposures and Buttons sealed against moisture. And 2.5" TFT LCD, 4 x Shooting, 3D Color Matrix Metering II, and Large viewfinder are some of the key features of Nikon D200.
Lighting brings out different moods in the buildings. The day time can make a large difference to your image. The building which looks uninteresting and plain during day time can be transformed to a wonderful building by lighting at night. Side lighting creates long shadows and adds a mood to your photograph. You don't need a costly camera to take great photographs at night; just bring a good tripod, Hotshoe bubble level, Expo Disc, Flash Units and also make sure that your camera has enough memory.
Underwater photography is entirely about unveiling a world that rests beneath the deep ocean. Underwater photography is reliving this strange and mysterious world to the people. It is a process of clicking beautiful photographs while underneath water.
Every one of us likes to watch the twinkling stars in the night sky. Have you ever been out and took the photographs of the sky at night? Have you ever browsed the pictures taken by telescopes? If yes, then you are already in the field of astrophotography.
Photography Equipments 
Forensic Photography, also referred as forensic imaging or crime scene photography, is not practiced for fun, but is a serious business. Forensic photography is an art,