Archived posting to the Leica Users Group, 2008/04/22
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]On Apr 22, 2008, at 8:41 PM, Bob Adler wrote: > Hi Geoff, > > You're correct; I'm not speaking of shooting in JPEG. I shoot RAW > only also and process in Lightroom and CS3. And as you correctly > stated, I'm not talking about doing IR photography. > > I am curious as to why you say a UV enhances clouds and sky. I've > not heard of that before and I'm very curious to know why that is > so. I may have to go out an buy a whole bunch of those puppies! :-) > > Just now I don't see the need for using the IR filter unless I'm > shooting under incandescent lights and dark clothes. I read > somewhere that having increased IR sensitivity (i.e., without the IR > filter) enhances gradations in the blacks. That's all I was curious > about; if anyone with more knowledge than I might know if this is so. > > Probably not discernable. Maybe some day I'll shoot an image with > and without to see if I notice a difference. But I see no value in > using the IR filter unless I want color under the above conditions. > It doesn't add anything to RAW images converted to BW, and may > detract from the lens' abilities (just my opinion about filters in > general; don't want to start a filter/no filter thread here please). good question Bob... why a filter esp for bw...? but more to the point, why shoot RAW to get more complete data, and use a filter to exclude data? I don't use any filter for bw, but then I rarely use a filter for color. Some of the best bw images I ever got from the M8 were jpeg fine bw, right out of the camera, and yes... no filter... I think it's all about the light, and adjusting to eye with PS or LR, Steve > > > Best, > Bob > > Date: Wed, 23 Apr 2008 10:10:44 +1000 > From: "Geoff Hopkinson" <hoppyman@bigpond.net.au> > Subject: RE: [Leica] IMG: M8 BW conversion > To: "'Leica Users Group'" <lug@leica-users.org> > Message-ID: <003301c8a4d6$7954db20$6b01a8c0@dadquad> > Content-Type: text/plain; charset="US-ASCII" > > Hi Bob, are you referring to shooting in the BW mode, which would be a > colour saturation mode for jpegs? In my opinion that is throwing > away an > ernormous amount of information and control. I only shoot in Raw, > hence RGB, > not greyscale files. Generally speaking, a UV makes sense for photos > of the > sky and clouds anyway. All of my lenses have UV/IR filters fitted > full time. > I'm working on coding some of them (only my 50 is 6 bit). Raw and > processing > in Adobe Camera Raw/Photoshop CS3 offers huge advantages, including > when the > intent is to convert to a greyscale file (or toned BW). That > combination > offers by far the largest number of possible tones, which may be > placed as > you wish within your dynamic range. What's that for an M8, maybe 6 > stops?? > Someone with more experience than I might like to chime in there. > Those 3 > gazillion linear tones get morphed into our non-linear way of seeing > stuff. > In the end the files are much more robust and hence editable. If you > have a > chance, take a look at what Lightroom or ACR and/or PSCS3 will do > for you in > new BW options. I follow your point on not wanting to filter IR and > I'd be > very interested to see anyone's work displaying examples there. I > confess > that I am not personally enthusiastic about IR photography, but I > don't > think that you are referring to that specifically. > > Cheers > Geoff > http://www.pbase.com/hoppyman/e > http://gallery.leica-users.org/v/gh/ > > -----Original Message----- > From: lug-bounces+hoppyman=bigpond.net.au@leica-users.org [mailto:lug- > Subject: Re: [Leica] IMG: M8 BW conversion > > Geoff, > Wondering why you leave the UV/IR filter on. I've only been using it > indoors > with people (clothing) photography (when I remember to put it on...) > My understanding is that the M8 provides better gradations of gray > because > it doesn't have an IR filter on the sensor. Thus I'm thinking that > for BW > not using the filter makes for more information. This just from my > readings; > it may be just theory... > Any thoughts? > Thanks, > Bob > > Bob Adler > Palo Alto, CA > http://www.raflexions.com > > > Date: Wed, 23 Apr 2008 01:26:15 +1000 > From: "Geoff Hopkinson" <hoppyman@bigpond.net.au> > Subject: [Leica] IMG: M8 BW conversion > To: "'Leica Users Group'" <lug@leica-users.org> > Message-ID: <000101c8a48d$34692870$6b01a8c0@dadquad> > Content-Type: text/plain; charset="US-ASCII" > > Still playing with BW conversion from M8 DNGs. This is from walking > the dog > here recently. We've been having Graham clouds here several times a > week for > six months or so. Bless you La Nina. > > > > UV/IR only. PSCS3 conversion simulating deep red and blues tweaked > further. > Even put some grain back for nostalgia. > > <http://www.pbase.com/image/95983277> > > > > > > Comments always welcome. > > Cheers > > Geoff > > http://www.pbase.com/hoppyman/e > > http://gallery.leica-users.org/v/gh/ > > > > ____________________________________________________________________________________ > Be a better friend, newshound, and > know-it-all with Yahoo! Mobile. Try it now. > http://mobile.yahoo.com/;_ylt=Ahu06i62sR8HDtDypao8Wcj9tAcJ > > _______________________________________________ > Leica Users Group. > See http://leica-users.org/mailman/listinfo/lug for more information best, Steve "I never wanted to be famous" http://www.blurb.com/bookstore/detail/186890