Supplementary Explanations to the AX103S Instructions
How to connect your DSLR camera in prime focus photography
1. Photographic Configuration with Use of Flip Mirror Diagonal
AX103S OTA
(Supplied)
Flip Mirror Diagonal
EA60 50 50.8mm SX.
or
50.8mm Compression Ring
T-Ring
DSLR Camera Body
T-Ring
Extension Tube VC
Wide Photo Adapter 60mm
DSLR Camera Body
This method is recommended for a DSLR camera with APS-C (2*) or smaller format imager.
Note: If your DSLR camera has an imager that is equal to the APS-C size or smaller than the APS-C size, vignetting will
generally not occur in this configuration. However, there is possibility that the vignetting may arise from the orientation of
the attached camera. In this case, repositioning the inner ring of the T-ring will eliminate the vignetting. The inner ring of
the T-ring can be turned by loosening the setscrews on the T-ring.
2. Photographic Configuration with Use of Wide Photo Adapter 60mm
This method is recommended for a DSLR camera with full 24mm x 36mm size format (4*) imager.
Note: If your DSLR camera has an imager that is equal to the full format size or smaller, any vignetting (5*) will not occur in
this configuration.
AX103S OTA
(1*) Imager: The surface of imaging sensors on a digital camera or to film on a SLR camera.
(2*) APS-C size format: The size of imagers is 23.6mm x 15.8mm. The size may differ slightly depending on types of
digital cameras.
(3*) Vignetting: Only the center of the viewing (imaging) field and the area near the center are seen (in a photo taken) but
the outer area is blackened due to loss of light.
(4*) Full size format: The size of imagers is about 24mm x 36mm. It is equal to a camera with 35mm film format.
(5*) The image circle illumination may not become uniformly bright due to a reduction of the illumination at the four corners
of the imager. This will often appears on a DSLR with full size format imager.
It is necessary to use one of the methods below when using your DSLR camera with the AX103S optical tube for prime focus
photography. If the camera is attached in a different configuration, the distance from the fourth lens element in the drawtube to
the focal plane or imager (*1) of your camera will change. This could result in deteriorated image.
Содержание AX103S
Страница 1: ...Instruction Manual for the Ax103S...
