I think senior members are immune already. Only newbies like us need to fear.
different products for different mkt segments ... senior members are unlikely to give up their 70-200f2.8 IS Mk II for 70-300L ...
New L lens finally!
- Thread starter focus627
- Start date
different products for different mkt segments ... senior members are unlikely to give up their 70-200f2.8 IS Mk II for 70-300L ...
Yup. 70-300mm L looks less attractive to me though.
Halfmoon
Senior Member
Just what I m thinking about.
My only problem.... what I do with my 70-200mm F4...... I can keep it but the usage will be much minimal if I get the 70-300mm..... :think:
Wait for reviews & sample image first......
Halfmoon
Senior Member
Different Strength and weakness.... just like my current headache......
I am thinking of changing lens.... and wonder... 24-105 or 17-55....:think:
Yea! I was hoping for a 17-85mm f2.8 kind of lens
cg171s
New Member
Somehow I'm not that excited with the new lenses release today... Why do they want to improve the already excellent 300mm f2.8??
I'd rather they improve on the 24-70 (IS or not), 100-400, and the 50 f1.4..
Probably the most interesting one for me is the fisheye and the extenders, but it's still like... meh..
Oh well, I guess the good thing is, wont get infected by the BBB virus :bsmilie:
I'd rather they improve on the 24-70 (IS or not), 100-400, and the 50 f1.4..
Probably the most interesting one for me is the fisheye and the extenders, but it's still like... meh..
Oh well, I guess the good thing is, wont get infected by the BBB virus :bsmilie:
commonjunks
Senior Member
Looking at the improvement, how many ppl in CS will purchase 300f2.8II, 400f2.8II, 500f4II, 600f4II?
I don't know what is the logic, maybe this was only cater for pro shooter to keep them going to dark side?
For a shooter like me, i would be more interested in 100-400L II, 501.4II and lighter 24-70II. But for the above 4 lens, it is out of my range.
I don't know what is the logic, maybe this was only cater for pro shooter to keep them going to dark side?
For a shooter like me, i would be more interested in 100-400L II, 501.4II and lighter 24-70II. But for the above 4 lens, it is out of my range.
ZeroDivine
Senior Member
Looking at the line up, it's quite clear they want to continue dominating in the Sports section, where they have traditionally been very strong before the arrival of D3/s. So the lenses coupled with 1d iv capability hopefully will keep Canon users in the camp.
Just two quick question, Who is in control of the AF, the lense or the camera body?
Does all the lenses have CPU in it? What is the function of the CPU?
Anyone care to shed some light?
cheers
I'd be interested in this too.
Canon focus motor all in lens. Body controls autofocus i guess.
You can easily find answers to your questions on google. Please do a search next time...
probably more than the 70-300 DO lens now.
:bsmilie: I wonder how much these new lenses cost. :think:
terrylam77
New Member
Hi,
Well, I do know that the body control the autofocus, and the lens takes the signal or electrical pulse from the body to translate that to movement.
My main juice is that, how does a new dedicated AF algorithms and a new high-speed CPU in a lense, can offer quick and accurate focusing during shooting?
I think, the signal from the body would mostly be a open loop, meaning that it would not need signal from the lens to do a feedback. It tells the lens to move how much.
How do the lens take part in the AF algorithms, and what does the high-speed CPU do? This google cant answer me. Any expert out there?
I guess the CPU function would be in the IS, not really in the AF portion.
cheers,
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