|
An interesting point I discovered when converting the Nikon 8400 was that when the original hot mirror filter that measured 1.8mm in
thickness was replaced with a 1A filter of the same dimension exactly (thereby having an equal diffraction index), the camera gave results that appeared to lack sharpness. So recently I replaced the 1A glass
filter with a slightly thicker 2mm UV filter with the result that the camera now seems to render an image that is much sharper. Without a filter of any kind fitted between the lens rear element and the
CCD, the camera cannot focus at all, with the exception of very close macro focus.Strange but the Nikon 8400 behaves quite differently to the Canon G3 in this respect.. The filters I used to convert these cameras
was a section cut from a standard camera filter.....The 52mm R72 filter is fitted via use of a standard lens adapter...if the white balance preset measurement is taken from green grass, it renders strong black and
white IR images with amazing skies. Purple Moon was shot using eyepiece projection with the 8400 via an adapter I made. Telescope is a simple Newtonian reflector with a 114mm diameter mirror.
Exposure was 1/8th sec @ f6.2 with R72 filter. |
|