Oct 24, 2011 04:46 | #1 Hi
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Mike ugly when I'm sober  More info | Oct 24, 2011 05:03 | #2 It's not a spot metering circle is it?  HOSTED PHOTO please log in to view hosted photos in full size. www.mikegreenphotography.co.uk
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Oct 24, 2011 05:06 | #3 No Mike, thanks anyway... It is wider than that, has no black line and appeared for the first time yesterday after more than 5000 shots on the body....
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stsva Cream of the Crop  More info | Oct 24, 2011 07:46 | #4 When you say a diameter just greater than the lateral AF points, do you mean it is outside all of the horizontal AF points (meaning a pretty big circle)? If not, please explain what you do mean. Also, you need to update your sig. Some Canon stuff and a little bit of Yongnuo.
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Kaljam Member 154 posts Joined Feb 2010 Location: Connecticut More info | Oct 24, 2011 07:50 | #5 Did you take your lens off and check for a spot of some sort on the mirror?
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I can see the circle on the viewfinder screen, but it appears to be part of the screen...
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msowsun "approx 8mm"  More info | Oct 24, 2011 09:20 | #7 mikeblackburn wrote in post #13297087  I can see the circle on the viewfinder screen, but it appears to be part of the screen... Not sure if I am allowed to do this or not, but I have a query out on dpreview forums too with images... here is the link to have a look... http://forums.dpreview.com …rum=1019&message=39667497 Thanks for the replies thus far.. And stsva, updating sig now  You should also also post the photos in this thread. Mike Sowsun / SL1 / 80D / EF-S 24mm STM / EF-S 10-18mm STM / EF-S 18-55mm STM / EF-S 15-85mm USM / EF-S 55-250mm STM / 5D3 / Samyang 14mm 2.8 / EF 40mm 2.8 STM / EF 50mm 1.4 USM / EF 100mm 2.0 USM / EF 100mm 2.8 USM Macro / EF 24-105mm IS / EF 70-200mm 2.8L IS Mk II / EF 100-400 II / EF 1.4x II
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aliengin Goldmember 1,159 posts Likes: 78 Joined Mar 2011 More info | Oct 24, 2011 09:40 | #8 Did you buy your camera used? Not an expert but it looks like a 3rd party focus screen:
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totoyo Member  67 posts Likes: 1 Joined Apr 2011 More info | Oct 24, 2011 11:43 | #9 mikeblackburn wrote in post #13296735 Hi Wondering if anyone has had a similar experience. My 3month old 7D has developed a discrete ring in the viewfinder. It is not part of the LCD display as it is there if the camera is on or off. It is centrally located and has a diameter just greater than the lateral AF points. It is too regular to be an artifact or a foreign body on the viewscreen. Anyone seen this? Help? Hello mike, without a pic i just can suppose two things...the first one could be a circle of moisture condensation (when you go from a cold temperature, eg air conditioned, to a warm or hot temperature, eg outside a room. 6D Mark ii + 7D + Tamron 17-50 f/2.8 + EF 28-70 f/2.8L + EF 50mm f/1.8 + Falcon 8mm f/3.5 fisheye + EF 100mm f/2.8L IS + EF 80-200 f/2.8L "magic drainpipe" + wish to learn
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Snydremark my very own Lightrules moment More info | Oct 24, 2011 12:04 | #10 Never seen anything like that. I'd be tempted to have the Canon kids take a look at it, myself; it may be completely benign, but it is certainly out of the ordinary... - Eric S.: My Birds/Wildlife
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Jim_T Goldmember  3,312 posts Likes: 115 Joined Nov 2003 Location: Woodlands, MB, Canada More info | Oct 24, 2011 12:05 | #11 Is the circle there when you remove the battery... If so, then I'm guessing the transmissive LCD focus screen has become discolored somehow... I have no idea how it could happen.
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PaulB Goldmember 1,543 posts Likes: 2 Joined Apr 2003 Location: Leeds, Yorkshire More info | Oct 24, 2011 12:11 | #12 totoyo wrote in post #13297971 Hello mike, without a pic i just can suppose two things...the first one could be a circle of moisture condensation (when you go from a cold temperature, eg air conditioned, to a warm or hot temperature, eg outside a room. And the second one it could be fungus...but i'm pretty sure that is the case one. Why and how do you guess at these two causes?
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Oct 24, 2011 13:32 | #13 Jim_T wrote in post #13298070 Is the circle there when you remove the battery... If so, then I'm guessing the transmissive LCD focus screen has become discolored somehow... I have no idea how it could happen. Hi Jim. Yes, the circle is still there even with the battery out - it is duller, along with the rest of the focus screen.
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Seems like it is going to be going to Canon to have a look see.. There have been other threads about this, going back to 2005 and 40D's but no resolution to any of them either.
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JonK Goldmember  2,161 posts Likes: 3 Joined Feb 2004 Location: PA USA More info | Oct 24, 2011 13:43 | #15 Hm... I almost feel like I saw this on my 7D recently. 7NE | 7D | 5DII | 16-35/2.8L II | 24/1.4L II | TS-E 24/3.5L II | 50/1.4 | 85/1.2L II | 100/2.8L IS | 70-200/2.8L IS II | 400/5.6L | PIXMA Pro 9500 Mark II
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