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Sharpest Canon 1.6 crop lens



 
 
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  #21  
Old October 2nd 06, 03:06 PM posted to rec.photo.digital.slr-systems
Bill
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Posts: 435
Default Sharpest Canon 1.6 crop lens

"Tom Ross" wrote in message
...
On 1 Oct 2006 19:50:10 -0700, "RichA" wrote:

Not on the edge, unless you really stop it down.
http://www.pbase.com/andersonrm/image/57631694

Now for the facts - the image Rich posted is of questionable
origin.
The reason it's questioned is three-fold:

2 - The image size is wrong for the 30D - original size is
4368x2912
which is the 5D file size at 12.7 megapixels (30D is 3504x2336
8.2mp).


I shot with a 30D and a Nikon D200 at the same time. First 30D I'd
seen in Toronto.
It wasn't a 5D. No processing other than an increase in brightness.


OMG...this ought to be good for a laugh...

RichA, please explain to everyone the discrepancy in the pixel count.

Then after fumbling for an excuse with that, please explain the 6MB
file size from a Canon 30D jpg which is typically a lot smaller at
about 3.5MB in size.

And for some more fun, have a look at this image from your own page:

http://www.pbase.com/andersonrm/image/57655520

Notice how it _CLAIMS_ to be a crop from a 30D, yet the accompanying
info and exif both state it's from a 5D.

Can you _BE_ any more stupid?

I think you can...c'mon, you can do it.


  #22  
Old October 2nd 06, 07:26 PM posted to rec.photo.digital.slr-systems
Protoncek \(ex.SleeperMan\)
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Posts: 198
Default Sharpest Canon 1.6 crop lens


"AaronW" wrote in message
oups.com...
Protoncek (ex.SleeperMan) wrote:
"Bill" wrote in message
.. .
You can't use the 17-85 wide
open, and even when stopped down to improve sharpness, it still lacks
contrast and it has nasty CA at the wide end. The 17-85 is a poor
performer for the price. It has the advantage of IS and a wide zoom
range
for convenience, but that's it. Optically it's nothing to get excited
about, and the cheap $100 18-55 kit lense is about as good as the
17-85.


But definitely NOT for pro's. I've read several
reviews, from good to bad, and found out that all bad were compared to
pro
lenses, while all good were estimated as "very good for the price" so not
as
a comparison with pro lens, but rather a relative conclusion.


Not comparing to more expensive lenses, the cheaper 28-135/3.5-5.6 IS
is better than the more expensive 17-85/4-5.6 IS, plus that covers full
frame.

http://digitcamera.tripod.com/#slr

good one...only wide end could be a bit wider...


 




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