Øivind Tøien, 45 degree anglefinder Ir-qa made by Ireneusz Błaszczuk is the best optic tool in my studio. I have updated model - I can see whole cameras viewinder incereased by 130 %! More info:
http://www.wrotniak.net/photo/43/irqa.html .
This anglefinder is very useful for studio (it can rotate 360 degree), portrait and video. Ireneusz made 45 degree anglefinders for different cameras Nikon, Canon, Olympus and only 1 for Pentax
Several copies ordered National Geographic photographers, too.
It will be necessary to perform the execution:
- aluminum 360 degree adapter - I can add photos and drawings adapter if you want,
- 32 mm lens Mikar of Lomo LCA,
- 45 degrees 1.25 " astropart with a simple eyepiece 1.25 ", but I do not
know astro components,
- cut the PCB to the fixing in place of the eyepiece camera - this is
important because, as the camera falls it breaks the first plate – I tasted
it,
- some tests, because I do not know your camera's viewfinder .