Basic Knowledge about DIY 35mm-Adapters

delba

New member
Hey there,

very soon, at the end of this month, the time has come for me to realize my first project, i planned and will shoot by myself. And after I saw some really awsome shots with 35mm-lenses also with the DVX100, i got into my head to build one myself as well, because unfortunately I have to take the costs as well alone. So everything, I can get for less money is a welcome "guest" in my production.

But before I kick off there are some basic knowledge to avoid mistakes that ruine my image. The thing is, that it is not just a movie but for me it is the movie - the movie with which i want to introduce myself at a university to study film.

So if i read all these tutorials about how to build oneself a 35mm-adapter, there is always just told to use a 35mm-camera-lens or lens of a dslr, a ground glass and a macro lens. So far so good, everything understood.
BUT when i asked the guy "Jehu", who constructs all these JAG35-Adapters and sells them to all over the world, what about this JAG35 to use with the DVX100 and he answered, i have to use a 62mm-Achromat and a condenser.
My question is now: Do i really have to use the 62mm-Achromat und if yes: why? And is it true, that i don't need to use a condenser if i use the Canon EE-A or EE-S GroundGlass? Somewhere i once read, this GG is a fresnel lense attached which is actually a condenser. So do i need a condenser? The function of a condenser would actually just be to minimze vignetting, so that you don't have to zoom with your camera at the ground glass, right? Is this true?

In what distance do i have to position my groundglass so that my image won't get blurry but as sharp as possible? so in other words, how near can an object be to the lens of the camera, so that its still sharpened?

And if i use a macro lens and achromat and condenser, doesn't it distort the picture?

I'd be very glad to get some answers very soon because unfortunately my time is running out and before my shot i'd like to test the adapter not to stand there during the production not knowing what to do.

Thanks a lot in advance,
best greets, Tim.
 
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