The Holy Grail Of 35mm Adapter
- Thread starter Ill Eagle
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Yas Kassana
Well-known member
ASG that was cool, what was that, a static adapter?
Forrest Schultz
Active member
ASG that was really good, what camera and adapter was that. was that a homemade adapter adapter? if so, great job!
PaPa
Major Contributor
350 gritt?
so the lower the number the gritt, the ... wellll, i should say is the lesser of the fine gritt compared to a 1500 ?
but since you have it oscilating, or moving however it is, you loose less light? Get the nice bokeh, and get rid of the static grain? Perfect adapter?
so the lower the number the gritt, the ... wellll, i should say is the lesser of the fine gritt compared to a 1500 ?
but since you have it oscilating, or moving however it is, you loose less light? Get the nice bokeh, and get rid of the static grain? Perfect adapter?
Any adapter involves a number of compromises and your preference is down to personal taste. I want better bokeh without too much light loss or softness, 350 is my chosen balance. The short comings of my present set up are I can't do high shutter speeds and the mic picks up motor noise if I mount it on the cam, if I go over 1/50 it's pretty much unusable. But that is another compromise on the design you choose. If you want high shutter without grain you'll probably have to spin the gg which means a big bulky adapter, I want a compact adapter for run & gun, which is what I've got. Light loss is not affected by the fact that the gg is moving. My adapter (including lens) has in the ballpark of 1.5 stops loss, not sure exactly but that's my chosen compromise to get better bokeh. There are better solutions than a ground glass out there, a different material could produce the same bokeh with less light loss and possibly less grain, but this is the best I have at the mo. I posted this already:
The bokeh is controlled by the amount of diffusion (diffusion angle) of the gg. Low grit = more diffusion, high grit = less diffusion. Generally speaking the low diffusion angle/high diffusion angle trade offs are
Low diffusion angle--------high diffusion angle
Bad (hazy) bokeh----------good (hard) bokeh
Less light loss--------more light loss
Less grain--------more grain
Sharper image--------softer image
Deep dof-------------shallow dof
20 degrees is a good amount of diffusion IMO.
The main trade off is usually light loss. To get good bokeh without grain you're pretty much going to have to move the gg and take a hit on the light loss. With an oscillating design you can't hide as much grain as you can with a spinner. Different materials have different grain and light loss/diffusion ratio.
The bokeh is controlled by the amount of diffusion (diffusion angle) of the gg. Low grit = more diffusion, high grit = less diffusion. Generally speaking the low diffusion angle/high diffusion angle trade offs are
Low diffusion angle--------high diffusion angle
Bad (hazy) bokeh----------good (hard) bokeh
Less light loss--------more light loss
Less grain--------more grain
Sharper image--------softer image
Deep dof-------------shallow dof
20 degrees is a good amount of diffusion IMO.
The main trade off is usually light loss. To get good bokeh without grain you're pretty much going to have to move the gg and take a hit on the light loss. With an oscillating design you can't hide as much grain as you can with a spinner. Different materials have different grain and light loss/diffusion ratio.
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