TS-E on the cheap? For architectural photography

brightcolours wrote:

Steve Balcombe wrote:

AmateurArchitectural wrote:

The T/S lenses benefit greatly from being used on full frame

Can I ask how? The IQ of a crop is presumably higher away from the vignetting and focus problems of the outer edges of the TS-E image circle. The difference between 18 and 20 Mp doesn't seem critical for my purposes.

The difference between 18MP and 20MP is very minor, agreed. But the higher image quality of full frame (used optimally) is significant.

He asked to explain what would give the higher IQ. In reality, the IQ differences are not that big, when you use equivalent settings.

I did not refer to equivalent settings, I specifically said USED OPTIMALLY

The whole point of a tilt lens is to use it optimally.

The rest of your post is equally ludicrous but I will just answer one point for the benefit of others:

There are cases of full frame lenses which perform better on crop - one documented example is the Nikon 70-200/2.8 which was current a few years ago when Nikon had no full frame DSLRs. It was optimised for performance in the centre of the frame and had (relatively) poor corners.

It is nonsense that this lens was "optimized for performance in the center". It is a film era full frame design, when digital DSLRs were not yet replacing film SLRs (2002 introduction).

http://www.dpreview.com/lensreviews/nikon_70-200_2p8_vr_n15/5

I do need to make one small correction - Nikon's first full frame DSLR, the D3, had been available for a few months.