Originally Posted by
GrumpyDiver
Interesting but very tough shots to do, Tejal. Architectural photography is quite different from the work you have shown up until now.
You are working in a very limited space and there are limited angles that you can shoot from. This suggests a wide angle lens approach and shooting up to capture most of the building. This is where the problems start; the angle start looking quite strange as you get a key-stoning effect as the building seems intent on crashing in on itself. Often we get some strange distortion in objects that are close to the camera, etc. The question is, are you happy with the results, or are you looking at a more "realistic" view of the building.
That being said, 18mm is not really all that wide on a crop frame camera.
The old view cameras were wonderful for this type of work as both the front element (lens) and rear (film plane) could be adjusted in multiple directions to get the composition just so. But of course, these are large, heavy and need a large tripod.
A shift-tilt lens on a DSLR is a workable approach, but this type of lens is quite expensive and has little or no automation (manual focus, metering and exposure) and cannot be used on all camera bodies because of the positioning of on-lens controls. Ideally, the camera is perfectly level and set on a tripod, although one can get pretty close when shooting hand-held. This is how I have been shooting buildings lately
A third option is to take a picture with enough space around it, to post-processing tools to make your corrections, but this takes a fair bit of practice, on the shooting end, as you will end up cropping off a significant part of the shot as you straighten things out.