JHAG Posted April 19, 2012 Share #1 Â Posted April 19, 2012 Advertisement (gone after registration) Strange behavior with the internal meter. When set in P mode, it cannot detect properly the variations in light intensity. Example : pointing the lens toward a lit window, for backlit shot, it gives totally blown-out shot, with almost white highlights (1/8 s.). If I point the lens 2 cm to the right, to have more of a dark wall in the frame, it reads the speed correctly, and the shot is as it should be (1/250 s.). Am I missing something ? Link to post Share on other sites More sharing options...
Advertisement Posted April 19, 2012 Posted April 19, 2012 Hi JHAG, Take a look here DMR. I'm sure you'll find what you were looking for!
andybarton Posted April 19, 2012 Share #2 Â Posted April 19, 2012 R8 or R9? Â The meter is in the camera, of course, not the DMR. The meter failed on my R8, which lead me to selling the DMR, rather than buy another one. The meters on R8s have been known to fail. Link to post Share on other sites More sharing options...
JHAG Posted April 19, 2012 Author Share #3 Â Posted April 19, 2012 R9 - recent series. If it's just the meter I can do without it. I'll do some more tests. Link to post Share on other sites More sharing options...
jaapv Posted April 19, 2012 Share #4 Â Posted April 19, 2012 It would cost you the earth ( and a bit of outer space too) to repair... It failed on my R9, which had me replace it by an R8, which failed on the transport mechanism, which had me replace it by another R8, which failed on its aperture coupling... All of it economically irrepairable of course. So stop-down for me... Link to post Share on other sites More sharing options...
jpattison Posted April 19, 2012 Share #5  Posted April 19, 2012 What is it like on Aperture Priority? Does it behave itself?  Seems weird that you get the correct reading at an angle to the subject motif  John Link to post Share on other sites More sharing options...
jaapv Posted April 19, 2012 Share #6 Â Posted April 19, 2012 The measuring cell can work loose. It means the end of the camera... Link to post Share on other sites More sharing options...
JHAG Posted April 19, 2012 Author Share #7  Posted April 19, 2012 Advertisement (gone after registration) What is it like on Aperture Priority? Does it behave itself? Seems weird that you get the correct reading at an angle to the subject motif  John  Done a series in M and A, problem disappeared. In P mode, it's hit and miss, mostly miss. Also : - I could not read pics anymore, it remained stuck on the last one - Then last pic had the "Key" icon, as if protected, although I did not protect it. - Another pic was displaying in double, dividing the screen in two half In fact, in P mode, when stopping down from 2.8 to 22, the viewfinder display remains stuck on f. 2.8 and just oscillate to f. 3.4 and speed is 1/45 in broad daylight. Hence totally overexposed. The lens mounted is a brand new APO 180. Link to post Share on other sites More sharing options...
gyoung Posted April 19, 2012 Share #8  Posted April 19, 2012 It would cost you the earth ( and a bit of outer space too) to repair... It failed on my R9, which had me replace it by an R8, which failed on the transport mechanism, which had me replace it by another R8, which failed on its aperture coupling... All of it economically irrepairable of course. So stop-down for me...  I do admire your perserverance  Gerry Link to post Share on other sites More sharing options...
stuny Posted April 19, 2012 Share #9 Â Posted April 19, 2012 J-F - Â My R8 meter failed, and the repair was not cheap. Link to post Share on other sites More sharing options...
psquared Posted April 19, 2012 Share #10 Â Posted April 19, 2012 Done a series in M and A, problem disappeared.In P mode, it's hit and miss, mostly miss. Also : - I could not read pics anymore, it remained stuck on the last one - Then last pic had the "Key" icon, as if protected, although I did not protect it. - Another pic was displaying in double, dividing the screen in two half In fact, in P mode, when stopping down from 2.8 to 22, the viewfinder display remains stuck on f. 2.8 and just oscillate to f. 3.4 and speed is 1/45 in broad daylight. Hence totally overexposed. The lens mounted is a brand new APO 180. Â Is the aperture closed all the way when you're using the P mode? Â The other problems appear to be electronic gremlins that can affect the DMR intermittently. Make sure the battery is fully charged and the contacts on the battery and in the DMR are clean. Also, you may want to take apart the DMR and reattach it to the R9 to make sure they have good electrical contact. You may want to clean the contacts on the DMR and R9 as well. Link to post Share on other sites More sharing options...
JHAG Posted April 20, 2012 Author Share #11  Posted April 20, 2012 Is the aperture closed all the way when you're using the P mode? The other problems appear to be electronic gremlins that can affect the DMR intermittently. Make sure the battery is fully charged and the contacts on the battery and in the DMR are clean. Also, you may want to take apart the DMR and reattach it to the R9 to make sure they have good electrical contact. You may want to clean the contacts on the DMR and R9 as well.  I had done all this yesterday. Contacts were already clean but I cleaned them cleaner… Metering is back on track, so far. Link to post Share on other sites More sharing options...
graeme_clarke Posted April 20, 2012 Share #12 Â Posted April 20, 2012 I echo all the advice about having all the contacts clean and pushed up tight. Â One question though - has it done the same with other lenses? The reason I ask is when using a 28-90 set on aperture priority I was occasionally getting well overexposed pictures. The penny dropped when I realised it was only happening at f16 or 22. The reason was the spring return mechanism for stop down from wide open when metering/focusing was sticking at about f11 so the lens was more open than the shutter speed automatically selected - hence overexposure. The lens took a trip to Solms to be fixed. Â On P you start with the lens at f22. Take the lens off , set it to f22 and very carefully using something like a pencil point on the aperture return lever move it round so the aperture is wide open then let it go. The spring should close it to f22. If it sticks before reaching the end of its travel I think that may be the problem. Â Let us know how you get on. Â best wishes, Â Graeme Link to post Share on other sites More sharing options...
stuny Posted April 20, 2012 Share #13 Â Posted April 20, 2012 J-F - Â I hope that truly solves it. When my meter went out it initially became intermittent. Link to post Share on other sites More sharing options...
jaapv Posted April 20, 2012 Share #14 Â Posted April 20, 2012 I fear it sounds exactly like my exposure meter failure... Link to post Share on other sites More sharing options...
dave_d Posted April 20, 2012 Share #15 Â Posted April 20, 2012 Some good suggestions. You could also remove the DMR and put the film back on and shoot some film to isolate the DMR or camera as the problem. Link to post Share on other sites More sharing options...
psquared Posted April 20, 2012 Share #16 Â Posted April 20, 2012 J-F -Â I hope that truly solves it. When my meter went out it initially became intermittent. Â Same with mine. I had mine replaced 4 times on my R9. Fortunately, the first one was under warranty, and each subsequent failures were within the new warranty period. I'm keeping my fingers crossed, because there is no warranty on the R9 now. I'm not sure what I'm going to do if the meter fails again ... Â Do you know if meter failure is common (or reported?) in R8 or R9 WITHOUT ever coupling to a DMR? I always had a suspicion that it is the interaction with DMR that may be causing the meter failure somehow. Link to post Share on other sites More sharing options...
topoxforddoc Posted April 20, 2012 Share #17  Posted April 20, 2012 I’ve only ever used my two DMRs (on a R8 and R9) on a manual setting and I don’t bother with the light meter either. Perhaps I’ve done too much shooting with my M2 in the past. Link to post Share on other sites More sharing options...
wildlightphoto Posted April 20, 2012 Share #18 Â Posted April 20, 2012 I always had a suspicion that it is the interaction with DMR that may be causing the meter failure somehow. Â R8/DMR #1: no problems after 6 years of use R8/DMR #2: no problems after 3 years of use Link to post Share on other sites More sharing options...
stuny Posted April 21, 2012 Share #19 Â Posted April 21, 2012 When my meter went out (I was shooitng wolves last November) I was glad for the LCD on which I chimped and then adjusted exposure by eye. You can see that it worked by looking at teh "Wolves in NJ" gallery on our site. Link to post Share on other sites More sharing options...
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