AlexJoda

They have some sample variations on this lens. I needed to buy 3 of them to get one non decentered sample. If you found this good sample it is one of the best and sharpest lenses in the lineup...

Because you are asking for using the zooms for studio portraits I would like to mention one advantage for the 50-140mm. It has a fixed aperture compared to the 55-200 (at least below f 4.8). This is very important if you want to use a studio flash with a fixed flash power. If you zoom with the 55-200 you will change the exposure. Other than that I prefer the 55-200 for traveling because it is so much lighter and smaller...

You have to look at his flickr account. Amazing pictures! He is really a master of composing with light....

I love my 10-24 especially because of the ability to zoom. Sometimes the 10-12mm is too wide if you have have people at the edges of the frame. They look very strange. For that you can go to 24mm without changing. For land- and cityscapes this lens is awesome (and also for helicopter sightseeing as a testet some weeks ago. it can compensate for the shaking with OIS) ! It is my most used lens on vacations. The best lens for non moving night shots (10mm and OIS). For people at night and for DOF effects I have always my lightweight 35 1.4 with me, a perfect companion for the 10-24. This lens can easily hold against the wide primes in terms of sharpness. Compare the MTF figures at photozone....It´s the sharpest zoom I ever had...

You know that the 16 1.4 is only 35 gram lighter and that both the 16 1.4 and the Zeiss 12 2.8 together are more than a third heavier than the 10-24? The 10-24 combines a lot of lenses in one (e.g. a 10, 12, 16, 18, 23) and that was one of the reasons I bought it and take it with me when I want to go light....