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06-12-2016, 12:52 PM   #16
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QuoteOriginally posted by RedSky Quote
I would disagree, I am just trying to determine if I have two defective cameras, and have gotten more hatred here than help. Yes, I posted to too many places in my frustration, but the hatred here has been over the top. I guess it is easy to be so on the keyboard.

I am still no closer to an answer than I was when I started. Is it a diaphragm block failure, or is the camera perfect?

Keep your replies to yourself, one camera goes back tomorrow, and I will keep one and work around it or toss it in the trash. What a mistake it was even coming to this forum. I am done. May the future years treat you all well.
No he was referring to me, their are a couple of guys on this board who are in complete denial about whether this is a Problem or not, S o they feel compelled to attack and make anybody who says there is an aperture block problem look like a fool. Dont worry I for one believe you. DO not listen to these guys cuz it hasn't happened to them yet

06-12-2016, 02:34 PM   #17
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QuoteOriginally posted by niceshot Quote
No he was referring to me, their are a couple of guys on this board who are in complete denial about whether this is a Problem or not, S o they feel compelled to attack and make anybody who says there is an aperture block problem look like a fool. Dont worry I for one believe you. DO not listen to these guys cuz it hasn't happened to them yet
Look at the photos posted by the OP, Niceshot.

Be obsessed if you like, but your explanation doesn't fit them or the Op's description of their circumstances.

09-01-2019, 06:16 AM   #18
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QuoteOriginally posted by Suzhouren Quote
If the parameters change when switching to live view that suggests that it's not the diaphragm block at fault but just a discrepancy between metering through the viewfinder and in live view.
This is an old thread but because member "redsky" is mentioned again and again in other threads, there is a need to correct this error:

If the diaphragm controll block (or more precise the solenoid of this block) is at fault:

1. Photos taken with live-view have correct exposure but are dark if taken through the OV (optical viewfinder) except f22 or whatever the smallest aperture is for the given lens.


This is due to the solenoid switching twice in LV! Thus it gets more of an impult and thus still works in LV for a while... but:

2. after some time photos are dark taken with LV or OV: The solenoid is now completly stuck.


Metering of the camera actually is still always correct but the stuck solenoid does not act and thus the diaphragm of the lens will not be set accordingly.
It is not a problem of wrong or incorrect metering but a problem of the mechanism not being able to act.
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