Hi Jon,
J-Blake wrote in post #13555310
Good points MNUplander, and you may be 100% right about foregoing these plans for now. Selling the 24-105 and 16-35 to pick up a TS-E may be a better option, considering my needs.
The reasons I was thinking about going this route is twofold. First, I came very close to buying a 17 TS-E about 6 - 8 months ago. The reason I never pulled the trigger is that they are crazy expensive and I'm having a very difficult time figuring out which to go with 17 vs. 24.
Check this: https://photography-on-the.net …p=13559640&postcount=2008
IOW, get the 17 plus the new Extender 1.4X Mk III
.
BTW, the 16-35 does not work with any Canon extender. They only work with telelenses from 135 mm and longer (IOW, 135L, 135 F/2.8 SF, and all longer than that), the TS-Es, and the MP-E 65. This because some of the glass of the extenders extends into the barrel of the lens mounted to it, and all shorter lenses and non-MF lenses do not have enough space to accomodate this.
This is one of the reasons why I have a few converters in addition, but I would be wary using any converters on an UWA zoom lens, considering these do magify any optical errors these lenses may have to a rather large degree.
Also, at the time I was not considering selling the 16-35 and 24-105 to offset the cost which I think is a good idea. The second is that a guy on Craigslist was selling his 70-200 this morning, and with my buddy's experience and my long term needs it seemed like it was worth considering.
As far as your other points though I would counter that the weight difference between the 2.8 II is a wash compared agains the two others. And I'd keep the double on the lens in the bag so it's ready to rock if I need it. You're right is still takes time to change lenses, but I believe in most cases that wouldn't be an isssue. There's more reasons to have reach than just wildlife stumbled across in the field though that was my example.
If you think the TS-E 17 plus Extender 1.4X III could be a good idea, you may to throw one of the cheaper Canon 50s in the mix to cover the hole between 17 F/4, 24 F/5.6 (TS-E 17 plus extender)
, and 70 F/2.8. There is ample choice:
1. 50 F/1.8, Mk I (used, but with proper focusing scale and ring, slightly noisy AF engine) or Mk II, if you don't want to spend too much (yet
),
2. 50 F/2.5 Compact Macro, which is great little lens, a little over twice the price of the F/1.8 Mk II, but with great bokeh and sharp wide open, be it with a noisy AF engine,
3. and of course the 50 F/1.4, at almost 4X the price of the F/1.8, but 2/3 of a stop faster than F/1.8, and 1 2/3 stop faster than the CM.
BTW, once you have seen the results that the TS-E 17 can produce, I don't think you will regret losing the 16-35.
Kind regards, Wim