Quoting Chip Louie <[EMAIL PROTECTED]>: > > > > > Hello, > > I have an EOS 30. Last week i did a symple test with my new gray card. > > I placed it in the sun and put my camera on IsO 125 ASA. And did a light > > metering with the whole card in the viewer. And i used a 50mm > > F1.8 II lens. > > I found that the camera was showing 1/250 F16 instead of the > > expected 1/125 F16 acording to the F16 exposure rule. > > My good old Chinon was showing the right exposure. > > > > Is this normal behaviour for an EOS 30 or am i doing something wrong ?? > > > > greeting Jan v. Veen > > Hi Jan, > > The sunny 16 rule is rather wildly variable as can be 18% gray cards even > from the same manufacturer. The standard is to hold an 18% gray card at a > 45 degree angle for a meter reading. Even so your latitude, time of year, > time of day, amount of moisture and dust in the air will affect the EV you > get on any given day or hour. Your old meter may just be off. > > Something to try out that often has surprising results, shoot an image of > the your gray card or a nice scene with a roll of medium speed SLIDE film > using the camera body's metered exposure value, bracket 1 full stop up and > down. Be sure to put a visible note in the frame with the exposure used > for > the frame. Rewind the film leaving the tail out and reload it into the > other body advancing the film 2 or 3 frames past the other camera's last > exposure and re-shoot the same scenes using the metered exposure value from > the new body, bracket 1 full stop and include those visible notes. In my > little experiment I used Kodak Select ISO 100 Ektachrome and a Kodak 18% > gray card, my old manual Minolta SRT-101 body and 50mm f/1.4 lens yielded > very nearly the same film density at the metered EV as my EOS 5QD and EF 50 > 1.4USM but with different metered exposure values! They differed by more > than 2/3 of a stop in metered EV but the results on film were the same! I > also used my trusty 25 year old Pentax Digital Spotmeter and it matched up > with the EOS 5QD exactly! > > > Regards, > > Chip Louie >
Thanks all for your reactions, The correct metering is important to me because i like to exposure my B/W film and slide film correctly. Indeed as long as the results are consistant, but i like to have a good reference. The camera has been at the canon repair centre but they said " it's within limits" I wonder how a EOS 1N or 1V does film exposure. Jan * **** ******* *********************************************************** * For list instructions, including unsubscribe, see: * http://www.a1.nl/phomepag/markerink/eos_list.htm ***********************************************************
