Originally posted by 5teve Hi Canada
I had quite high hopes for your method, so eagerly rushed home tonight and tried it. if im not mistaken its using the optical preview while holding the preview lever? this shuts the lens down, shows the meter and with your fifth hand allows you to set the exposure correctly by altering the shutter?
Actually, I use the middle finger on my right hand to spin the front e-dial to change the shutter speed. It would actually be easier to spin the rear dial with my thumb, but that's not where the shutter speed is.
Quote: well comparing to the green button im not getting much in the way of differing results in controlled condition, it may well be different in the real world so i'll try it and time will tell.
You will get the same results unless your 30 year old 400 mm lens stops down too slowly. The first few stops are ok, but then the green button shutter speeds start to fall out of whack - too high. The green button does a momentary stop down that is too short for my 400 with an extender on the back.
Quote: interesting that you say about the lens stopping down too slowly and the metering happening too quickly.. its a thought that crossed my mind, however according to the manual all manual lens default the camera to centre weighted metering with the option to choose spot. therefore as the exposure would be calculated behind my diagonally split prism by the camera the prism blacking out would cause over exposure.
all well and good.. except i get a variation of over and under exposure. its even been happing in real use situation on my sigma lens's!
im sure its something that can be fixed via firmware... isnt it?
Thanks
Steve
I'm afraid not. The bright treatment of the standard focusing screens for the K10 and K20 are the problem. The LL-60 screen fixes the problem perfectly. It took a while for the forum to convince me before I finally decided to spring for one, but I am very happy with it. All my metering is now perfect, with the noted exception for my 400 specifically. My M 100 macro works perfectly with the green button.
I emphasize that it is
my 400 that has problems. The lens has had heavy use including before I bought it, and that is the biggest part of the problem. The old girl is worn out, but I love her anyway.