Re: Disturbing trend with some DSLRs
- From: John McWilliams <jpmcw@xxxxxxxxxxx>
- Date: Sun, 29 Jun 2008 14:07:13 -0700
John McWilliams wrote:
Alan Browne wrote:John McWilliams wrote:Alan Browne wrote:Chris Malcolm wrote:
And as for softer RAWS, I note that some camera makers actually go so
far as to sneakily sharpen their "RAW" images in the camera, no doubt
in an attempt to impress comparative reviewers and test chart
photographers. If this is the end of that sneaky practice then I
welcome it.
I have no idea about in-camera sharpening of raw images, however, you do
have to watch the default sharpening level of Adobe's raw import into
CS3. It is set at a value of 25 (whatever that actually means). I set
it to 0 for import and use the Unsharp mask for the final work.
It's called capture sharpening, as few cameras, afaik, sharpen RAW images. It's generally thought a good thing, and is quite mild, and does not take the place of output sharpening.
It's a horrible thing! I posted about it soon after I got my 135mm
f/1.8 lens. The CS3 raw import at a sharpening value of 25 (default)
created diagonal line jaggies in the imported image. Once I backed it
off completely, and then imported my images, those jaggies disappeared.
(And later discovered that it can be set "for display only" in the raw import with no effect on the image loaded into CS3).
While I seldom use ACR (via CS3), the RAW engine is the same in LR as ACR, and I've never seen such artifacts. Would you send me the RAW file? I shan't do anything with it other than test.
Simply put [Image test] in subject to get past my filters.
All right- got both the jpeg and RAW image without hassle. When I examine that detail at 2:1 and 4:1, I see the jaggies on the edge of that petal, which become slightly less visible if the capture sharpening is turned down to 0. Very slightly. At the same time, probably the edge contrast taken away takes away from the sharpness of the final photo, though I'd also wager that it'd be completely undetectable at normal print size. Viewing at 1:1 or below, it's almost unnoticeable.
--
John McWilliams
.
- References:
- Disturbing trend with some DSLRs
- From: RichA
- Re: Disturbing trend with some DSLRs
- From: Chris Malcolm
- Re: Disturbing trend with some DSLRs
- From: Alan Browne
- Re: Disturbing trend with some DSLRs
- From: John McWilliams
- Re: Disturbing trend with some DSLRs
- From: Alan Browne
- Re: Disturbing trend with some DSLRs
- From: John McWilliams
- Disturbing trend with some DSLRs
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