New Canon Lenses...

Discussion in 'Photography Equipment & Products' started by nakedyak, Aug 30, 2006.

  1. nakedyak

    nakedyak TPF Noob!

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    sorry if this has been posted before, but i thought i'd mention something about it:

    Canon’s new f/1.2 standard lens



    [​IMG]


    Canon EF 70-200 mm F4L IS USM len

    [​IMG]


    Man these will be sweet lenses. Does it seem to you guys like every time you buy new gear, they improve it a few months later? I mean i guess the 70-200 f4 has been around for a while, but i just got mine like 3 months ago! Now I have lens envy! But they say it will be going for $1250, so couldnt you just get the 70-200 f2.8 IS for almost that much??
     
  2. Alex_B

    Alex_B No longer a newbie, moving up!

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    I really look forward hearing of first experiences with the 50mm lens. I was always waiting for 50mm, fast and L ! However the price is a killer ;)

    I really like my 50mm 1.4 prime, I am sure I would love this new lens if it holds
    what it promises!
     
  3. nakedyak

    nakedyak TPF Noob!

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    Is 1.2 really that much faster than 1.4? The build and focus speed will be much better though i'm sure.
     
  4. Alex_B

    Alex_B No longer a newbie, moving up!

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    1.2 makes a difference ... but one you can always also achieve with higher ISO I guess. Regarding Depth of Field in some extreme situations it could help.

    But mainly it is (probably) much better built as you say, it will be better environmentally sealed, AF might benefit and hopefully optical quality such as sharpness and resolution and all. It might give better quality at 1.4 than the 50mm 1.4 at 1.4 (which already is fairly good).

    We have to wait and see until first tests are out and some of us actually own it!
     
  5. thebeginning

    thebeginning TPF Noob!

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    that lense's f/1.2 max ap. surely isn't the selling point. I sure hope that the wide open optical quality and the AF are improved over the 1.4...at least the consistency and accuracy.
     
  6. Unimaxium

    Unimaxium TPF Noob!

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    I think I read that one feature of the f/1.2 is that it has a better kind of USM motor in it, which lets it report distance data back to the camera's CPU. I'm pretty sure the 1.8 and 1.4 don't do this. I suppose it can help with flash exposure calculation, and it would be nice to have the focus distance recorded in the EXIF data too.
     
  7. thebeginning

    thebeginning TPF Noob!

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    ooh that would be neat. I don't think it's AF will be as fast as the 'standard' canon USM, like in the 85 1.8 or 50 1.4...it's surprising how much more the extra aperture size will slow it down.
     
  8. markc

    markc TPF Noob!

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    BTW, there are two different Canon USM motors.
    http://photo.net/equipment/canon/lens-motors
    The good ones, usually in the L lenses, are ring USM. They can be focused manually even when the switch is set to AF. If you do that with the non-ring USM, you can ruin it.

    Most non USM motors are AFD, and the 50/1.8 has the worst of the bunch, the MM. The 50/1.4 has the non-ring USM motor, but has a clutch in it that lets you manually focus with the switch at AF. The 85/1.8 has the real deal, the ring USM. It looks like the 50/1.2 does also. That would make it a huge step up from the 1.8 in focus performance.


    Here's a chart: www.usa.canon.com/eflenses/pdf/spec.pdf
     
  9. Alex_B

    Alex_B No longer a newbie, moving up!

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    Hmm, maybe I just missed something (not an expert here), but why should AF be slower if you have a larger aperture? I thought more light (as in 1.2 wide open compared to say 1.8 wide open) usually helps the AF to find its target?

    Or do refer to the mechanical issues that the USM has simply to move more material around for the larger and more complicated 1.2 lens?
     
  10. Alex_B

    Alex_B No longer a newbie, moving up!

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    BTW, interesting to see that we mostly talk about the 50 prime here.
    It seems to be more interestign than the telezoom ;)

    This all then contradicts what many people say, that 50mm primes are boring ;)
     
  11. Unimaxium

    Unimaxium TPF Noob!

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    My assumption is that the extra glass needed to collect enough light for a 42mm-wide aperture is what would cause the slow down in AF. That's just a guess, though.

    Who said 50mm primes are boring? bah! :lol:

    I think the 50mm 1.2 is interesting because canon's pushing a new extreme in one of their classic lens focal lengths. The 70-200mm F4L IS USM is kind of boring because it's sandwiched in their lineup between three other very similar lenses: the 70-200mm F4L non-IS; the 70-200mm f2.8L IS, and the 70-200mm f2.8L non-IS. :confused:
     
  12. Alex_B

    Alex_B No longer a newbie, moving up!

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    Well, lots of people say... they seem to assume you need it either wide or either tele to get interesting shots

    ... but I myself always liked 50mm as it gives a natural perspective and hence you concentrate more on composition of the image than on perspective effects.

    As for the 70-200mm F4L IS USM you are probably right that it is the "yet another" effect ;)
     

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