About six months ago I purchased a Yashica MAT 124 G with a built in light meter. It produces good results most of the time. On average I would say 6 or 7 per roll of 12. I felt some of the poor exposures were do to an "averaging" meter and others do to operator error. After using it a few times my daughter mentioned how much she enjoyed so I looked for another Yashica. I found an older model in mint condition without a meter so I purchased a LunaPro and got mixed results. It seemed to me as if the LunsPro
I suggest that you get a book on the zone system--there probably is one at your local library by Ansel Adams.
No, I would have taken a reading of the sky, not the light house. Also, you didn't mention what film you are using--
is it transparency or is it color neg film?
You also mention that you are taking a 7.5 degree option--I assume you are using a "spot" attachment to give you that reading??? Also, if you are using a polarizer--you will have to take a reading through it at the same setting as you have on the lens.
At this point, I should mention that the Luna Pro was originally designed for mercury batteries which have a different rate of discharge than silver or alkaline batts.
Gossen did make an adapter that would hold 2 MS 76 (silver only) batteries. It had a resister to help keep the voltage at a steady level. The MS 76 batts have a higher voltage than the mercury batts which also can skew your results.
One easy way to check your meter is to aim it at a clear North sky. The reading should read F16 @ 1/100th sec for ISO 100 film. A clear North sky is very close to 18% Grey. Check this with and without the spot attachment. Do you have the instruction manual for the meter? There is a separate one for the spot attachmant. BTW, the reading angle for the Luna Pro without the attachment is about 30 degrees.
I will look for the Ansel Adams book on my next trip to the library.
I added a Variable Angle Attachment to the LunaPro. It allows for spot reading of 7.5
Taking a reading of the grey shingles in the shade would be the best since in your posted image they appear to be nearly a perfect 18% grey, at least on my monitor.
Again, are you using transparency or negative films? If you are using neg films and having them commercially processed,
the auto exposure features of the printer will overide your initial exposures. Color neg films generally have a 1>2 stop
I used used Kodak 400 UC ISO 400 print film. I have them developed and printed commerically at a local camera shop.
I purchase almost everything I need from them as they are
very helpful and most knowledgeable. Those readers in the
Boston area likely know of Newtonville Camera.
I'm adding another older home ... the first was my daughter's dorm at a Northamton, MA College. The second was taken in Stockbridge, MA.