Hi all,
I think we are taking fourthirds system to the limit ;) Some days ago I
was scanning some Ektachrome E100 slides with Kodak T-grain, supposed to
be a very fine grain reversal film. Even using the sharpest (50mm f2) OM
macro with this film and then scanning it with my Nikon LS-4000ED
quality of image is lower than E-1 5Mp camera. Please don´t tell me
things like film curvature as I divided the film in 64 cells, then
scanned every cell and finally I stitched all of them. Image was
perfectly focused (corner to corner) but effective resolution isn´t 4000
dpi at all. There are lot of space between silver halide particles and
resolution is very poor. Digital sensors give much higher resolving
power with less megapixels.
Do you think future cameras will have more than 20Mp??? IMHO 15Mp is
plenty enough and please take into account bayern pattern will disappear
in a near future, so effective resolution will be a true 15Mp image. No
more interpolation required for generating an image from surrounding pixels.
So although diffraction limit is a problem in small sensors I am
delighted with my Zuiko Digital 50mm f2 results at f16. Quality is hair
raising. I don´t miss OM-SYSTEM at all regarding to image quality. I
miss other gadgets like multi-spot metering.
Something I wonder is... if airy disk is a general fall-off with a
penumbra, do microleses help to prevent this fall-off penumbra light
reaching the photodetector? I also suppose a telecentric system also
reduces this effect in the corners of the image, doesn´t it?
Regards,
Dave
--
_________________________________________________________________
Options: http://lists.thomasclausen.net/mailman/listinfo/olympus
Archives: http://lists.thomasclausen.net/mailman/private/olympus/
Themed Olympus Photo Exhibition: http://www.tope.nl/
|