Zone-10 is off-line at the moment so I can't take a look.
Perhaps you needed some coffee when writing about focal lengths used for
the test. You mention using f/8 and f/4.5 but then refer to them as the
best focal lengths.
As to camera aspect ratios the A65 is 3:2 just like 35mm. The A200 is
4:3 just like the E cameras. If you use the same focal length
equivalents the angle of coverage diagonally across the frame should be
the same in both. But that also means the angles of coverage both
vertically and horizontally are not the same. The crop factor for the
A200 compared to 35mm is 3.94. The crop factor for the A200 is 1.5. If
you use the Minolta 50/1.7 on the A65 its equivalent 35mm focal length
is 75mm. Choosing the same equivalent for the A200 requires 75/3.94 = 19mm.
Awaiting a look
Chuck Norcutt
On 6/17/2014 10:09 PM, Willie Wonka via olympus wrote:
Thanks to all of you who responded to my inquiry. Just as a reminder,
the end goal of this exercise is not to have a camera feuds, but to
determine if I ended up with a lemon.
One thing I missed mentioning the first time around, was the fact
that A200 RAW files always are on the soft side, but...they sharpen
really well. I think my first impression about A65 being inferior in
terms of sharpness, was due to that and also the inability to sharpen
further its JPEG's and TIFF's. Actually, my initial impression is
that one can try to make the RAW A65 files just as sharp as the
JPEG's, but thats it. No real advantage in shooting RAW.
To make it less challenging, I have put up new files up for your
review here:
http://zone-10.com/tope2/main.php?g2_itemId=12748
They are pictures taken with the A200 and A65. The latter were taken
either with the kit 18-55 SAM lens or the Minolta AF 50mm/1.7 where I
used f8 for both, since the reviews show that this is the focal
length where both are at its sharpest. I used f4.5 while setting up
the A200 since AG's tests show that its its sharpest focal length.
It looks like the format of both cameras is slightly different, but I
assure you that both times I shot at approximately the same focal
length. It just that the image ratios from the A200 are slightly
smaller, ie yielding a more "square image".
I hope your programs can open up the A65's RAW files. My PS CS2 cant,
that's why the first time around I had everything converted to TIFF.
I also added the JPEGs that came out of the A65.
Have fun and let me know what you find.
Thanks in advance.
Best
Boris
P.S. I honestly think that files from the A65 look smudged, no matter
how much I try to sharpen them. But also was unable to sharpen the
ones from the A200 to the levels I am used to.
--
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