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  1. #1
    Join Date
    Feb 2006
    Location
    Des Plaines, IL
    Posts
    9,560

    Unhappy SONY 50mm f/1.4 radical response

    I been struggling with my SONY 50mm f/1.4, that's about a year and a half old.

    To duplicate the issue, to me, seems pretty simple, yet ... I am having trouble getting the "repair facility" to do so. It has been there and back, once, so far.

    Basically it goes like this:
    1. you put the lens on the DSLR camera
    2. turn the camera on
    3. with the drive mode selection, choose Hi-speed shutter
    4. Choose "M" mode
    5. select aperture to f/10
    6. select shutter speed of 1/60
    7. select ISO = 800
    8. lift the built in flash
    9. Focus and fire roughly five consecutive shots.


    If your lens is acting like mine is ... instead of five roughly identical exposures, you will have several over-exposed ... the first one easily not right and then one of more of the rest. The problem sems to be tardy response by the aperture, itself. I do not get this response from my 17059 or any other lens, for that matter. Just this PRIME.

    I get so tired of the back and forth, with these kind of things.
    Last edited by DonSchap; 07-01-2009 at 05:14 PM.
    Don Schap - BFA, Digital Photography
    A Photographer Is Forever
    Look, I did not create the optical laws of the Universe ... I simply learned to deal with them.
    Remember: It is usually the GLASS, not the camera (except for moving to Full Frame), that gives you the most improvement in your photography.

    flickr & Sdi

  2. #2
    Join Date
    Jun 2009
    Location
    Mount Pleasant, SC
    Posts
    145
    I will try this when I get home and see if I get the same response.
    Joe Holmes
    Sony α550
    Sony HVL-F42AM Flash
    Sony DT18-55 F3.5-5.6 (Kit Lens)
    Minolta Maxxum 50 1:1.7(22) Prime
    Minolta 35-70 F4 (Mini Beercan)
    Minolta 70-210 F4 (Beercan)
    Minolta 28-135 F4-4.5 (This beast is pretty heavy)
    Minolta Maxxum 100-200 F4.5
    Quantaray D28-90 1:3.5-5.6 Ver 5
    Tamron DiII 55-200 1:4.5-6

  3. #3
    Join Date
    Jun 2008
    Posts
    2,204
    Just checked mine on A mode and M mode per your settings and it's consistent with both the pop-up flash and hvl-f58am (Sony 50mm F/1.4 SAL-50F14, Japan made).
    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

  4. #4
    Join Date
    Feb 2006
    Location
    Des Plaines, IL
    Posts
    9,560
    Ryan, I figured it might be ... I think this lens has a sticky aperture ... the blades just will not "fly" shut ... they ... stick. Hopefully, others don't see this issue in a long, long time. I just can't believe I'm having it with the lens only under 2 years old and really not used all that much. Maybe two-three hundred actuations over its life?
    Don Schap - BFA, Digital Photography
    A Photographer Is Forever
    Look, I did not create the optical laws of the Universe ... I simply learned to deal with them.
    Remember: It is usually the GLASS, not the camera (except for moving to Full Frame), that gives you the most improvement in your photography.

    flickr & Sdi

  5. #5
    Join Date
    Jun 2009
    Location
    Mount Pleasant, SC
    Posts
    145
    I have re-read this after printing out the settings. I have the Maxxum 50mm prime, not the Sony (can't afford it). Don't think that I will be official comparison. Sorry, my mistake.
    Joe Holmes
    Sony α550
    Sony HVL-F42AM Flash
    Sony DT18-55 F3.5-5.6 (Kit Lens)
    Minolta Maxxum 50 1:1.7(22) Prime
    Minolta 35-70 F4 (Mini Beercan)
    Minolta 70-210 F4 (Beercan)
    Minolta 28-135 F4-4.5 (This beast is pretty heavy)
    Minolta Maxxum 100-200 F4.5
    Quantaray D28-90 1:3.5-5.6 Ver 5
    Tamron DiII 55-200 1:4.5-6

  6. #6
    Join Date
    Feb 2006
    Location
    Des Plaines, IL
    Posts
    9,560
    Thanks, Joe ... yeah, the more you get into it ... the more fun you come across. I probably should have been a lot more "focused" on the use of the lens when I initially bought it. Not that it would have shown a problem, out of the box, but by not rotating through my lens-cycle an leaving it sit quietly in the bag ... it never saw the light of day, long enough to make the problem known. Warranty expired ... and now it is out of pocket.

    Unfortunately, it seems SONY cannot duplicate it, either ... and THAT is a real problem. You cannot fix it if it does not appear to be broken.
    Don Schap - BFA, Digital Photography
    A Photographer Is Forever
    Look, I did not create the optical laws of the Universe ... I simply learned to deal with them.
    Remember: It is usually the GLASS, not the camera (except for moving to Full Frame), that gives you the most improvement in your photography.

    flickr & Sdi

  7. #7
    Join Date
    Nov 2008
    Location
    Monmouthshire, UK
    Posts
    2,152
    It doesn't take much oil on the blades to slow the diaphragm down.
    Operating the diaphragm lever usually confirms whether they are sticking.

  8. #8
    Join Date
    Feb 2006
    Location
    Des Plaines, IL
    Posts
    9,560
    When SONY doesn't seem to know that, Peter. Where does that leave us?
    Don Schap - BFA, Digital Photography
    A Photographer Is Forever
    Look, I did not create the optical laws of the Universe ... I simply learned to deal with them.
    Remember: It is usually the GLASS, not the camera (except for moving to Full Frame), that gives you the most improvement in your photography.

    flickr & Sdi

  9. #9
    Join Date
    Jun 2008
    Posts
    2,204
    Quote Originally Posted by DonSchap View Post
    When SONY doesn't seem to know that, Peter. Where does that leave us?
    That is quite pathetic...
    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

  10. #10
    Join Date
    Mar 2009
    Location
    San Diego, CA
    Posts
    602
    All I can say is ... I hope that doesn't happen with my Sony 50mm f/1.4. I can't test it out yet, because no flash.
    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???

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