What is the function of a diaphragm in a film camera?
a. it directs the image to the viewfinder.
b. it focuses incoming light rays.
c. it opens the shutter.
d. it controls the amount of light passing into the film camera.

i would love to you but i cant see a picture. i see that you already told someone before that i wont let post pictures on well i can kinda of you. posting pictures on here with your question is so much easier if your posting them on the app on your phone. if your trying to post a picture on a computer what you have to do is find out the name of the painting or equation, and once you've got that go to google type in the name and ta-da! and then last but not least you have to copy it. at the bottom of where you typing out the question you sould have this thing that looks like a paper clip and hit that and it should let you add it on here.

i hope this

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the string with the finger instead of using the bow