Archived posting to the Leica Users Group, 2011/05/31
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Since jpg compression is inherently lossy, that step itself can cause some softness. Usually it's good enough but for bigger work it may not be. If you want to keep the image as is on screen or from raw capture you can save in a few non-lossy and non-compressing formats like tif. They may be big but they don't degrade with each step of saving. Phil Forrest On Tue, 31 May 2011 18:26:15 -0400 Mark Rabiner <mark at rabinergroup.com> wrote: > I mainly agree Geoff that in Digital each time you have done all > your going to do to an image and have it at size you then add what > ever sharpening is needed right before you save it as a jpeg. I will > often not just blanket sharpen the whole image but do a selection via > using a gradation in the mask mode and sharpen that more or sharpen > that less. That's great if a DMR or M9 makes this less necessary but > that it negates this complexly I somehow doubt sorry! I'd still like > people here do look at each picture critically right before you > convert it to a jpeg and give it the proper sharpening it deserves. > With the edge towards under sharpening over over sharpening. And > every time I did this I do a quick undo and see the difference which > is usually a thing where I go "I'm glad I didn't forget to do this". > And every time I've seen a shot which has not been sharpened by me or > someone else I always feel like I need to clean my glasses. > > Mark > > -------------------- > Mark William Rabiner > > > > > From: Geoff Hopkinson <hopsternew at gmail.com> > > Reply-To: Leica Users Group <lug at leica-users.org> > > Date: Wed, 1 Jun 2011 07:44:44 +1000 > > To: Leica Users Group <lug at leica-users.org> > > Subject: Re: [Leica] M8 Repair... Update > > > > With the rationale being that there is no softening from an AA > > filter and you have great glass and technique. OK, but I would > > qualify the comment by adding that it depends on content, intent > > and output purpose whether some sharpening may benefit the result. > > Its just another tool though. I differentiate between some level of > > capture sharpening targetted at the content and output sharpening > > based on the end purpose (a low resolution web JPG in this case. > > > > Yes I am an evangalist for both forms used tailored for what you > > want to achieve. Don't forget that capture sharpening is > > interdependent with noise reduction (two facets of same tool). Here > > George has a high frequency subject but with most progressively > > softened (and elegantly) by the DoF. A little subtle small radius > > halo suppressed high frequency capture sharpening would make the > > very fine detail really 'pop' while masking would ensure that the > > softest areas (effectively very low frequency) are unaffected. > > http://www.pbase.com/hoppyman/image/128264662 > > http://www.pbase.com/hoppyman/image/128264663 > > Note that this last is at 100% and was 800 ISO > > http://www.pbase.com/hoppyman/image/124448398 > > > > Cheers > > Geoff > > > > *Life's not black and white, except at both ends* > > http://www.pbase.com/hoppyman > > > > > > > > On 1 June 2011 04:21, George Lottermoser <imagist3 at mac.com> wrote: > > > >> > >> On May 31, 2011, at 11:55 AM, Nathan Wajsman wrote: > >> > >>> If you are using Leica lenses on an M8 or M9, it is certainly > >>> optional. > >>> > >>> On May 31, 2011, at 1:50 PM, Mark Rabiner wrote: > >>> > >>>> I don't believe sharpening a digital > >>>> file is optional. > >> > >> Also optional with DMR. > >> As I suspect is also the case with most MF CCD sensors which do > >> not have AA filtration. > >> Here is an example of frame exposed yesterday > >> processed with 0 image sharpening > >> and no output sharpening. > >> <http://www.imagist.com/blog/?p=5329> > >> be sure to right click for larger image viewing > >> > >> Regards, > >> George Lottermoser > >> george at imagist.com > >> http://www.imagist.com > >> http://www.imagist.com/blog > >> http://www.linkedin.com/in/imagist > >> > >> > >> > >> > >> > >> > >> _______________________________________________ > >> Leica Users Group. > >> See http://leica-users.org/mailman/listinfo/lug for more > >> information > >> > > > > _______________________________________________ > > Leica Users Group. > > See http://leica-users.org/mailman/listinfo/lug for more information > > > > _______________________________________________ > Leica Users Group. > See http://leica-users.org/mailman/listinfo/lug for more information