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  1. #1
    Join Date
    Feb 2006
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    Des Plaines, IL
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    Exclamation A bit more of a problem using DSLRs and lots of lenses.

    Recently, I had been having aperture issues with a couple lenses, but not all of them. My SONY 50mm f/1.4 and the SIGMA 10-20mm f/4-5.6 DC EX were the primary couple that had, what I would term, “intermittent aperture issues”, during shooting. My other lenses were performing fine, which would logically lead you to believe your two lenses were … “bad.”

    Well, after some rather unusual testing … using AUTO and MANUAL Modes, I noticed that:

    1) In Manual Mode, the aperture was indicating whatever I choose, but not necessarily at that aperture when the shutter released.
    2) In AUTO Mode, the aperture setting was BLANK or just two dashes (--), indicating a “no lens” condition. (Hey, the lens was on there!)

    I have determined that the contact pin on my camera, when using these two lenses, was not striking the contact on the lens firmly enough to work ALL THE TIME. It was, truly, intermittent. Believe me, these kind of problems can be really “hairy” -> Now, it works … now, it doesn’t.

    The worst of all this is … I am mostly a MANUAL shooter … and do not use the camera’s AUTO settings much at all. So this “missing lens” detail did not even come up under most shooting circumstances. The camera simply told the lens what to close down to and that was all she wrote. The problem is, the lens did NOT get that message.

    Anyway, what it boils down to is the rather ‘advanced use’ my camera has gotten over the past two years. All of the lens change-offs are finally taking their toll. I mention this as merely a reference point for people who may eventually come to this weird crossroad. Like “Information Technology (IT) issues” they rarely repeat, but when they do … it sometimes helps to have someone, way back when, report what they had found in the reference material database.

    So, if you start seeing your camera overexposing for no apparent reason … clean those eight gold lens contacts in the camera’s lens mount and physically inspect them for equal and proper length projection.
    Last edited by DonSchap; 07-30-2009 at 08:08 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
    Dec 2007
    Posts
    1,760
    Fyi..if you have ever used a md adapter you may have damaged them..even shorted them out..

    I noticed on the one i bought that it was not machined to have any space for them..or the ap arm..i sent it back

  3. #3
    Join Date
    Feb 2006
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    No "MD" adapter in my inventory. All my lenses are "AF"

    This appears to be entirely a "wear issue."

    EDIT: Yes, I did get that SRT-101 recently, and it has two MC level lenses ... but, I would not bother using them on the SONYs.
    Last edited by DonSchap; 07-29-2009 at 02:14 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

  4. #4
    Join Date
    Jul 2008
    Posts
    1,087
    Quote Originally Posted by DonSchap View Post

    The worst of all this is … I am mostly a MANUAL shooter … and do not use the camera’s AUTO settings much at all. So this “missing lens” detail did not even come up under most shooting circumstances. The camera simply told the lens what to close down to and that was all she wrote. The problem is, the lens did NOT get that message.
    Yes, I was going to ask about this - why do you shoot manual all the time?
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  5. #5
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    Cool Doing it "old school"

    Quote Originally Posted by jekostas View Post
    Yes, I was going to ask about this - why do you shoot manual all the time?
    Look ... I have been shooting since the SLR was invented. Manual was the name of the game until the program mode came out. I feel perfectly comfortable with it and I won't complain when other people beg off on program modes. Have at it. More power to ya.

    TTL has never impressed me ... it has often screwed up more images, fighting for control, that I ever successfully enjoyed using it ... and "old school" is still okay, despite your objections, Jekostas. Get a light meter and join in!

    The α700 could have lost the "automated presets" in the "Scene Selections". I can honestly say I have never used them ... and the α900 does not even have them Seems a little "juvenile" in my opinion, but that is just me. Most people eventually grow out of "hand holding" and can eventually read their own storybook. I know this is anti-progressive thinking, but that's the way I do it.

    Welcome to my Photographic World.

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    Last edited by DonSchap; 07-30-2009 at 11:17 AM.
    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

  6. #6
    Join Date
    Nov 2004
    Location
    Wild, Wonderful, Wyoming
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    I bow to you M shooter...you have awesome skeeelz

    That's a very good shot of the F22 Raptor...BTW, how did you meter that? TTL perhaps? pretty hard to get incident light off something moving that fast. Or did you use a sunny f/16? Hmmmm. Anyway that's a pretty nice shot, but incident meter?

    I use the mode for my situation, and my photos come out just fine, thank you. I never venture below P, but I use what's available to me.

    Wouldn't have even kept that Starved Rock blown out sky shot, and of course I would have never shot in that light. The Red Tailed Hawk, blown also, and blurry due to camera shake, could have used an incident meter, or about -2/3EV to -1, and some IS...good thing you were in M mode, and your camera has built in IS. Oh wait, that's why you switched to Sony. I can take one look at my Histogram and see what I need to dial in EC. Prolly faster than metering with an incident meter. The incident meter has its place and I use one quite often when shooting landscapes and slow moving objects.

    I have nearly the same process as Rooz, but I don't machine gun, I'll guarantee I take a lot less photographs than you do. I use my TTL and Histogram and adjust from there. There are a lot of ways to get to the end result and no one here needs condescending comments to improve their photography.

    Quote Originally Posted by DonSchap View Post
    Look ... I have been shooting since the SLR was invented. Manual was the name of the game until the program mode came out. I feel perfectly comfortable with it and I won't complain when other people beg off on program modes. Have at it. More power to ya.


    Name:  Dons-F-22_Panorama.jpg
Views: 844
Size:  503.5 KB
    A good photograph is knowing where to stand.
    Ansel Adams

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    Ernest K. Gann-Fate is the Hunter.

  7. #7
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    Jul 2008
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    Quote Originally Posted by TenD View Post

    Wouldn't have even kept that Starved Rock blown out sky shot, and of course I would have never shot in that light. The Red Tailed Hawk, blown also, and blurry due to camera shake, could have used an incident meter, or about -2/3EV to -1, and some IS...good thing you were in M mode, and your camera has built in IS. Oh wait, that's why you switched to Sony. I can take one look at my Histogram and see what I need to dial in EC. Prolly faster than metering with an incident meter. The incident meter has its place and I use one quite often when shooting landscapes and slow moving objects.
    It's not even camera shake on that hawk, because there's like an inch of falconer's glove at the bottom of the picture that's good and sharp - the focus was blown, pure and simple. How one manages to do that (unless one is focusing manually without a corrected dioptre) I'll never know.

    Not closing down the aperture on that juvenile eagle with the 200-500 is pretty bad as well. If that was shot in Program or Aperture Priority it would've been simple to do.

    The starved rock shot... well, there is detail in the sky if you dial back the contrast and EV by a full step, even in the processed JPEG. It... wasn't, however.
    Last edited by jekostas; 07-30-2009 at 08:55 AM.
    E-510
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    Zuiko 14-54 F2.8-3.5 MkI
    Zuiko 70-300 F4.0-5.6
    Konica Hexanon 52mm F1.8
    Cullmann 2503
    Benro KS-0

  8. #8
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    Feb 2006
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    Des Plaines, IL
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    Cool Read slow ... let it soak in

    Quote Originally Posted by DonSchap View Post
    Look ... I have been shooting since the SLR was invented. Manual was the name of the game until the program mode came out. I feel perfectly comfortable with it and I won't complain when other people beg off on program modes. Have at it. More power to ya.

    TTL has never impressed me ... it has often screwed up more images, fighting for control, that I ever successfully enjoyed using it ... and "old school" is still okay, despite your objections, Jekostas. Get a light meter and join in!

    ...

    Welcome to my Photographic World.
    I think this covered that ... Jekostas. Please read ... and heed ... this time
    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
    Jul 2008
    Posts
    1,087
    Quote Originally Posted by DonSchap View Post
    I think this covered that ... Jekostas. Please read ... and heed ... this time
    Hm... you seem to selectively edited out parts.

    Seems a little "juvenile" in my opinion, but that is just me. Most people eventually grow out of "hand holding" and can eventually read their own storybook
    Then there was this jewel.

    Unfortunately, the XG-A was so limited in its control, I sold it and its lenses as soon as I could. This camera was a "Jekostas" dream-come-true. The first P&S DSLR!
    And ended with this

    Thanks for your time in the SONY DSLR forum ... you may tottle off. I ask that you waste my time, no more.
    "Juvenile"?
    "Tottle"?

    I can selectively quote what you posted as well, Don. I'm well aware you answered my question, I'm also well aware that you did so in the most overbearing, patronizing way you possibly could. Plus, you stooped to a personal insult to do so (not the first time you've done it, either).
    Last edited by jekostas; 07-30-2009 at 07:28 PM.
    E-510
    E-1
    Zuiko 14-54 F2.8-3.5 MkI
    Zuiko 70-300 F4.0-5.6
    Konica Hexanon 52mm F1.8
    Cullmann 2503
    Benro KS-0

  10. #10
    Join Date
    Dec 2007
    Posts
    1,760
    why do you shoot manual all the time?
    TOTAL CONTROL

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