Image Processing: Darkroom / Lightroom / FilmDiscuss Image processing -- traditional darkoom or digital lightroom here. Notice there are subcategories to narrow down subject matter. .
I have large scans that are about 620MB. That is the file size before I import them to LR. Once imported, they are 410MB. I don't understand why they are smaller. I am not doing anything to the file other than renaming them and adding keywords. I am also backing up to an external drive at the same time, and those files remain large. Does lightroom have some sort of capability or setting that I am unknowingly applying? This does not happen with my Canon digital files.
The importation dialogue box in LR only allows a handful of changes....
1. I'm importing a DNG or TIF and converting to DNG.
2. Standard Preview Rendering
3. Making a second copy to external drive.
4. Renaming the File
5. Development Settings "Non"
6. Destination is a new subfolder.
There don't appear to be any other settings....
Is there something about "Copy as DNG" when the file already is a DNG?
The importation dialogue box in LR only allows a handful of changes....
1. I'm importing a DNG or TIF and converting to DNG.
With "Copy as DNG" it's not really a copy but LR creates a new DNG file from the source file. Even if you had a DNG before the size now is different. If you want to keep your original files then you should use the the normal "copy" or "add" function (sorry, don't know the exact phrase because I don't use an english LR) .
Converting .tif to .dng gives serious smaller files. Not necessarily a quality loss.
There are somewhere in LR .dng compressions presettings. Sorry, I don't have LR at hand in the moment and can't remember where those settings are located...
You must have lossy impression selected for DNG compression. There is a lossless option if you wish to avoid any changes to the original tiffs.
If you keep the tiffs outside of LR or back them up to a different drive as they are imported, then you can enjoy the space savings and still have the unaltered data available.
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"Perspective is governed by where you stand – object size and the angle of view included in the picture is determined by focal length." H.S. Newcombe
Follow up question...let's say you take a photo to photoshop in order to more work on it, things that cannot be handled well in Lightroom. And you save that work. Do you then have Lightroom recognize that photo? Do you change the naming convention? How to you track photos like this?
If you really want to work efficiently with LR, do everything from within LR. Create folders, move files and start external programs from within LR. If you start PS (or any other program or add in) then LR asks you if it should make a new copy. say yes. work in the external program. close the program and you have your new modified file right next to your original file.
You can convert the files imported into LR from PS or a plug-in to DNGs if you want. This saves space and keeps the editing information with the file independently of LR.
You can also tag photos processed in other apps and plug-ins. This is how you would keep track of them inside of LR. I just use custom file names to identify this sort of photo.
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"Perspective is governed by where you stand – object size and the angle of view included in the picture is determined by focal length." H.S. Newcombe
Hybrid Mode
