For a few years, I heard a people say that a single lens that could cover 200-900mm was inconceivable to build and would not be portable.
Now, with a flip of a switch (- kidney) you can have the impossible!
If you consider swaping a FF 5D and 7D at your hip...
Then this lens will let you could cover 200-900mm out of the box.
Keep in mind that the 1.4x tele forces f/8 when zoom is extended fully.
Does [1.4x + 1.6x = 3x]
3X out of the box.. Wow!
200 f/4 to 600 f/8 on a FF body.
320 f/5.6 to 900 f/8 on a 1.6x 7D body.
Extended to 600 f/8 on a FF body + another 1.4x TC = 800mm.
Extended to 900 f/8 on a 1.6x 7D body + another 1.4x TC = 1200mm.
(approx rounded numbers)
I\'m certain someone will still add another 2.x just because they can
for their favorite photo thread titled \"Cuervo 1800 vs Canon 1800.\"
For a few years, I heard a people say that a single lens that could cover 200-900mm was inconceivable to build and would not be portable.
If you consider swaping a FF 5D and 7D at your hip, this lens will let you could cover 200-900mm out of the box.
Keep in mind that the 1.4x tele forces f/8 when zoom is extended fully.
200 f/4 to 400 f/5.6 on a FF body.
320 f/5.6 to 900 f/8 on a 1.6x 7D body.
1.4x + 1.6x = 3x
3X out of the box.. Wow!
I\'m certain someone will still add another 1.4 or 2.x just because they can for their favorite lunar / safari photo thread.
Feb 10, 2011 at 02:41 AM
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