sharpness problem with canon 10 D

[bgaras2001]

the first shot is taken with canon g1. the 2nd with 10D and canon 70-300 is usm. i am totaly disappointed with the camer at this point. cant seem to find a long macro lens that is sharp

http://www.pbase.com/bgaras2001/canon_10d_test

test page (http://www.pbase.com/bgaras2001/canon_10d_test)

[MarkH]

I think the lens is OK

I saved both pics and sharpened the 10D pic in photoshop. It is not hard to make the 10D pic sharper than the G1 pic.

It seems that the 10D is conservative on its sharpening for JPGs straight from the camera.

You could either set the sharpening parameter in the camera to +2 or use unsharp mask in photoshop.

There are also sharpening actions available for photoshop that will set the sharpening parameters for you.

[henkbos]

You should give us full EXIF data of both pictures to compare.

[Pekka]

bgaras2001 wrote:
the first shot is taken with canon g1. the 2nd with 10D and canon 70-300 is usm. i am totaly disappointed with the camer at this point. cant seem to find a long macro lens that is sharp

http://www.pbase.com/bgaras2001/canon_10d_test

test page (http://www.pbase.com/bgaras2001/canon_10d_test)

Hi,

The facts that you should learn and accept when moving from compact digital to SLR system:

G1's real focal lenght is 7-21mm. Transferred to SLR this means you'd work on super wideangle all the time. If you use f8 at 21mm from 2 meters it means you have everything sharp between 1.19-6.29 meters. But, when you take an SLR and use a f8 on 102mm lens (equivalent FOV to G1's 21mm) your sharp area is from 1.95 to 2.06m. For this flower photo you used 300mm lens (presumably from 2 or 3 meters) so f8 gives you 2 centimeters of sharpness (acceptably sharp on that 2cm and rest is totally unsharp i.e. bokeh). And it is sharp only if your shutter speed handheld is 2 or 3 times focal lenght. You used 1/180@300mm which means if not on tripod even that 2cm deep area would not be tack sharp.

So, to get the whole flower sharp you should use something like f22 (10cm DoF from 2.5m) and a tripod or strong flash because then you'd bound to have problems with handheld shutter speeds.

There are also lens quality issues here. And post-processing issues. But DoF is always there and it is something all should take time to know, so dig into http://dfleming.ameranet.com/dofjs.html

Welcome to SLR world.

And please don't be discouraged by this. I went through the same "cultural change" when I moved from G1 to D30. Took some months to get into new way of thinking and learning is still going on. And even with SLR's: when megapixels get higher the requirements to really know these things are needed more than ever because both good and bad is so clearly magnified on your screen.

[bgaras2001]

reall appreciate the info

thanks

[brault]

Within its depth of field and after sharpening in PS the 10D picture appears to me to be much sharper than the G2.

Frank B