kaycephoto wrote:
thanks for taking the time to do all this for us! I was assuming the 17TS would blow the others away...
To try to soften the rage that sometimes ensues, let me begin by saying that the 17TS is demonstrably a really, really fine lens and is exactly the lens that some photographers need for some kinds of photography. So, I am not here to say anything negative about the 17TS or any other particular lens.
What I am here to point out is that we all need to be on guard against a few pitfalls when it comes to focusing too closely on lens comparisons. These include:
1. Making resolution the only criterion or vastly over-rating its importance relative to other aspects of lens performance and functionality. To be crystal clear I am not saying that resolution does not matter. I am saying that it is often the case that several lenses produce excellent resolution, even when one among them might (depending upon how you measure) produce a higher test value.
2. In these cases, the difference is often not significant or it may be far less significant than the sum of other differences among the lenses, in particular including functionality and suitability for a particular use.
3. It is important to check assumptions based on what you have heard or what you believe against more objective measures. Photography is not a wholly objective pursuit, and there are lots of opinions. Before you pick one to latch onto, consider that there may be others that are equally valid and that context is the one of the main differences. Also consider that there is a lot of just plain misinformation passed off as fact on the Internet...
Take care, and make wonderful photographs with whichever of these or other lenses you choose to use. :-)
Dan
(By the way, and not referring to the previous writer's response here, be cautious any time someone tells you that camera A "blows away" camera B or that lens X "blows away" lens Y. It is almost always the case that, at best, A or X may be a small - and sometimes subjective - increment better than A or Y - and the "blows away!" language should turn on your hyperbole alert system!)