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  1. #11
    Join Date
    Jan 2008
    Location
    Ohio, USA.
    Posts
    1,161
    I use AF-C for all the sports shooting of course with spot focus, for the grad pics I am pretty sure I switched to AF-S will need to check and I am pretty sure I was center weighted. SSS was on. if you think it's worth it, only takes some time I guess but maybe I will run a set of tests for the lens. It would be great for my morale if it were the lens, it will suck if my most expensive lens needs work, but hey got that warranty! Next week it will be one year since I got my A700, for learning something almost totaly new to me thats not really much time, but then I look at some of the other guys work on here over the past year and see how far they have come. It may be about time to re-evaluate, and consider some options, accept limits and abilities and go from there. We shall see.
    Sony A700_____________Minolta AF 50mm. F/1.7
    Minolta AF 70-210mm F/3.5-4.5 Tamron AF 17-50mm F/2.8 XR DiII LD Asp. [IF]
    Tamron SP AF 70-200mm. F/2.8 DI LD [IF] Macro
    Tamron AF 70-300mm F/4-5.6 Di LD Macro 1:2
    Tokina AF 28-70mm F/3.5-4.5
    Tokina AF AT-X 80-400mm F/4.5-5.6
    http://flickr.com/

  2. #12
    Join Date
    Jun 2008
    Posts
    2,204
    Sounds right. Couldn't hurt to just double check it.
    flickr

    Canon 7D - 5D | 550EX - 430EX II - (2) PW FlexTT5 | 24-105 f4L | 70-200 f2.8L IS | 100 f2.8L IS | 50 f1.8 II

  3. #13
    Join Date
    Mar 2009
    Location
    San Diego, CA
    Posts
    602
    Sean,

    Congrats on your daughter's graduation. So you asked what to do now, well my parents took to stocking the refridgerators with all the good stuff by brothers and I wished had been stocked when we were living at home. My dad tried to play it off that ... "we can stock it now, because it will last."

    On the focus issue, at f/2.8, I've found that in a crowd of people center subject focus is almost a must. If it's on center weight and af-c a little movement can cause it to shift focus to someone nearby.
    Darin Wessel
    α 900
    Zooms: Tamron SP AF70-200mm f2.8 Di LD Macro; Sigma 28-90mm D macro, Konica-Minolta 18-70 f3.5-5.6
    Primes: Minolta 28mm f2.8; Sony 50mm f1.4
    Minolta RC-1000 remote commander

    Film:
    Calumet Cambo CC400 4x5 View Camera
    YashikaMat 6x6 TLR (other accessories)
    Minolta Maxxum 7000 w/ Minolta 35-80mm f/4-5.6 & Minolta 2800 flash
    Minolta Maxxum 5000i & Vivitar 728 AFM flash
    What's next???

  4. #14
    Join Date
    Nov 2008
    Location
    Monmouthshire, UK
    Posts
    2,152
    Darin's right. You need Spot focus and AF-S in a crowd. In fact that's what's needed most of the time IMHO.
    Choose your focus, lock it, recompose and release.
    And I think you did by and large.
    Looking at your Pics ......

    Pic01; 1/100th sec and focal length at 180mm(270mm). If you cropped it, total DOF is way less than 6". You picked the wrong focus point.

    Pic02; 1/80th sec at 200mm(300mm). Total DOF is small but you picked the right focus point.

    Pic03; 1/60th sec at 200mm(300mm). You did well!

    Pic04; 1/60th sec at 200mm(300mm). You did well!

    Pic05; 1/160th sec at 150mm(225mm). Easier at this length.

    Pic06; 1/80th sec at 70mm(135mm). Lots of subject movement and blur.

    Pic07; 1/50th sec at 180mm(270mm) tells it all.

    Pic08; 1/80th at 180mm(270mm) and the swinging tassel tells you the girl's head is moving.

    Pic09; 1/100th at 130mm(195mm). I can't tell if she's moving but DOF is playing it's part with one eye more in focus than the other. At 10ft total DOF would be a massive (not) 2".

    Pic10; 1/100th at 70mm(105mm) so no camera shake and a narrow DOF of 6" or 7" (less if it's cropped).

    So, you were fighting low light, narrow DOF, moving subjects, pressure of the occasion, the fuzziness of f2.8, the degradation of iso1600; all in all, I think you did Ok with what you had and I doubt there's any problem with the lens.

    Where do you go from here? Sony HVL-F58AM Bounce-Shift Flash.

  5. #15
    Join Date
    Jan 2008
    Location
    Ohio, USA.
    Posts
    1,161
    Thanks guys!
    Sony A700_____________Minolta AF 50mm. F/1.7
    Minolta AF 70-210mm F/3.5-4.5 Tamron AF 17-50mm F/2.8 XR DiII LD Asp. [IF]
    Tamron SP AF 70-200mm. F/2.8 DI LD [IF] Macro
    Tamron AF 70-300mm F/4-5.6 Di LD Macro 1:2
    Tokina AF 28-70mm F/3.5-4.5
    Tokina AF AT-X 80-400mm F/4.5-5.6
    http://flickr.com/

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