bruniroquai Posted August 30, 2013 Share #1 Posted August 30, 2013 Advertisement (gone after registration) How good is it compared to the MP? Thanks! Link to post Share on other sites More sharing options...
Advertisement Posted August 30, 2013 Posted August 30, 2013 Hi bruniroquai, Take a look here M6 classic Metering. I'm sure you'll find what you were looking for!
earleygallery Posted August 30, 2013 Share #2 Posted August 30, 2013 The same. Link to post Share on other sites More sharing options...
bruniroquai Posted August 30, 2013 Author Share #3 Posted August 30, 2013 Really? I've read the MP is more accurate but.. I can't believe this. So basically the same camera and the sames pictures will come out from it, regarding to exposure. Link to post Share on other sites More sharing options...
philipus Posted August 30, 2013 Share #4 Posted August 30, 2013 I see no reason to doubt the accuracy of the meters in these cameras, except for whatever effect the older electronics in the M6 may have on the accuracy. The metering principle differs between the M6 and the MP. The MP manual (p. 109) provides that the metering spot has a diameter of 12mm and corresponds to approx. 13% of the full negative format or around 1/2 of the short side of the corresponding frame in the viewfinder. The M6 manual, however, provides (p. 24) that "the metering field covers approximately 23% of the viewfinder field corresponding to the lens being used." Examples of what this means for the MP with respect to the various framelines can be found on pp. 93-94. There's a similar graphic in the M6 manual on pp. 24-25. It's quite clear the metering field is larger on the M6. As for the sensitivity of the meters, it's again a matter of checking the manuals. The MP manual provides that the meter sensitivity range at ISO 100/21° is from 0.03cd/m2 to 125000cd/m2 "at room temperature, normal humidity and aperture 1.0." It is further said that at ISO 100/21° this corresponds to EV-2 to 20 or f/1 and 4s (B-setting) to f/32 and 1/1000s. The M6 is somewhat less sensitive, beginning at 0,063cd/m2. The working range at ISO 100 is from EV-1 to EV 20 or, to quote the manual (p. 23) "2 sec (shutter speed dial position "B") at f/1 to 1/1000 sec at f/32". So the MP's meter is more sensitive at the lower end of the range, though the practical use of that extra 1 EV is perhaps limited. The M6TTL's meter's sensitivity and metering principle corresponds to the MP (well, or vice-versa, I guess). Cheers Philip Link to post Share on other sites More sharing options...
MarkP Posted August 30, 2013 Share #5 Posted August 30, 2013 How does the M7 light meter compare to these? I seem to remember seeing a post of Andy Barton's somewhere where he stated he believed the M7 had the 'best' or most accurate metering. I can't recall the details and I hope I'm not quoting him incorrectly. Link to post Share on other sites More sharing options...
earleygallery Posted August 30, 2013 Share #6 Posted August 30, 2013 How does the M7 light meter compare to these? I seem to remember seeing a post of Andy Barton's somewhere where he stated he believed the M7 had the 'best' or most accurate metering. I can't recall the details and I hope I'm not quoting him incorrectly. The M7 uses the same 'fat spotmeter', but on Auto you have stepless shutter speeds, which I think is what Andy was referring to. Link to post Share on other sites More sharing options...
TomB_tx Posted August 30, 2013 Share #7 Posted August 30, 2013 Advertisement (gone after registration) The M6 meter changed over the production cycle. My early M6 needed repair due to a leaking battery left in during storage, and Gus Lazzari replaced the meter and also did a modification that improved the low light sensitivity. Very nice now. Link to post Share on other sites More sharing options...
aesop Posted September 5, 2013 Share #8 Posted September 5, 2013 I see no reason to doubt the accuracy of the meters in these cameras, except for whatever effect the older electronics in the M6 may have on the accuracy. The metering principle differs between the M6 and the MP. The MP manual (p. 109) provides that the metering spot has a diameter of 12mm and corresponds to approx. 13% of the full negative format or around 1/2 of the short side of the corresponding frame in the viewfinder. The M6 manual, however, provides (p. 24) that "the metering field covers approximately 23% of the viewfinder field corresponding to the lens being used." Examples of what this means for the MP with respect to the various framelines can be found on pp. 93-94. There's a similar graphic in the M6 manual on pp. 24-25. It's quite clear the metering field is larger on the M6. As for the sensitivity of the meters, it's again a matter of checking the manuals. The MP manual provides that the meter sensitivity range at ISO 100/21° is from 0.03cd/m2 to 125000cd/m2 "at room temperature, normal humidity and aperture 1.0." It is further said that at ISO 100/21° this corresponds to EV-2 to 20 or f/1 and 4s (B-setting) to f/32 and 1/1000s. The M6 is somewhat less sensitive, beginning at 0,063cd/m2. The working range at ISO 100 is from EV-1 to EV 20 or, to quote the manual (p. 23) "2 sec (shutter speed dial position "B") at f/1 to 1/1000 sec at f/32". So the MP's meter is more sensitive at the lower end of the range, though the practical use of that extra 1 EV is perhaps limited. The M6TTL's meter's sensitivity and metering principle corresponds to the MP (well, or vice-versa, I guess). Cheers Philip ...erm, "spot on", Philip. Link to post Share on other sites More sharing options...
Paulus Posted September 13, 2013 Share #9 Posted September 13, 2013 How good is it compared to the MP? Thanks! Both work very well, if you get to know them. Link to post Share on other sites More sharing options...
tobey bilek Posted October 23, 2013 Share #10 Posted October 23, 2013 My M6 worked well for decades, as well as any reflected type meter. The trick is the spot must centered over a middle tone area . If you place it on a a light tone or dark tone, there will be under/over exposure . So you need to compensate. An incident type meter has no such problems. Link to post Share on other sites More sharing options...
Susie Posted October 23, 2013 Share #11 Posted October 23, 2013 I bought my M6 (non TTL) new in 1996 and have never felt the need for 'bettter' metering. It has always worked fine. Susie Link to post Share on other sites More sharing options...
TomB_tx Posted October 23, 2013 Share #12 Posted October 23, 2013 I agree - the M6 meter is fine, you just need to understand the metering area (like any meter). I prefer the smaller and better defined spot of the M5, but for most people the M6 is probably better. Link to post Share on other sites More sharing options...
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