Jan 21, 2011, 11:24
From previous photography experience a pellicle mirror is a stationary mirror type that doesn't move.
In 1965 when Canon launched their Pellix camera,the objective at the time was to accomplish TTL metering,
which was pioneered by Topcon (Tokyo Kogaku KK Japan no relation to Nikon) in 1963 when the Topcon RE Super was launched. When Canon launched their EOS RT in 1989-1992, this camera had a 10 frame per second
motor drive, this was the launch pad for the EOS-1n RS in 1995. Canon found that by having high speed frame
rate per second ratio, they needed a mirror that was free of vibrations and chose the Pellicle Mirror.
In 2009 when Canon released their EOS-1D MK IV this was the first full frame DSLR with 10 frame
per second burst rate. In 2010 Sony took this to their advantage by utilizing a SLT (Single Lens Translucent mirror) A55 with 10 frame per second rate burst yielding a 1.5 APS-C CMOS sensor crop that is aimed directly
at the advanced photographer. Keep in mind that the A55 has limitations such as the inability to do sports
photography due to the fact that it has no live view, no aperture control,if you want AF during a burst.
The 15-point AF system is not in the same as the Canon EOS -1D MK IV.
In 1965 when Canon launched their Pellix camera,the objective at the time was to accomplish TTL metering,
which was pioneered by Topcon (Tokyo Kogaku KK Japan no relation to Nikon) in 1963 when the Topcon RE Super was launched. When Canon launched their EOS RT in 1989-1992, this camera had a 10 frame per second
motor drive, this was the launch pad for the EOS-1n RS in 1995. Canon found that by having high speed frame
rate per second ratio, they needed a mirror that was free of vibrations and chose the Pellicle Mirror.
In 2009 when Canon released their EOS-1D MK IV this was the first full frame DSLR with 10 frame
per second burst rate. In 2010 Sony took this to their advantage by utilizing a SLT (Single Lens Translucent mirror) A55 with 10 frame per second rate burst yielding a 1.5 APS-C CMOS sensor crop that is aimed directly
at the advanced photographer. Keep in mind that the A55 has limitations such as the inability to do sports
photography due to the fact that it has no live view, no aperture control,if you want AF during a burst.
The 15-point AF system is not in the same as the Canon EOS -1D MK IV.