I have a scanned picture that was converted to a standard jpg file. I can open it with any viewer or editing program including Photoshop Elements. However, it won't open in Nikon's Capture NX2 (latest version) as I get an error message that the system cannot open the file xyz.jpg. What is the issue?
Really, Bob (robsb)? That seems like an oversight or something worse. Of course, it would be helpful if CNX2 warned "can't open grayscale images." Bob Kruppa, open the file in Photoshop Elements, then change Mode from Grayscale to RGB Color.
Thu 20-Mar-14 05:53 AM | edited Thu 20-Mar-14 05:53 AM by robsb
Larry it is the way it works. If you have saved the jpeg as greyscale and not RGB CNX2 will refuse to open it. This does not mean you can't open a B&W image it only means you can't use a greyscale mode. As I remember it is in the manual.
The photo was copied using a standard copier (don't know the brand) and then sent to me (old time wedding pictures of my parents). I don't know if the copier has the options of what color mode to set it in or not. The files sent were both B/W as well as sepia.
I pulled up the file in Elements and under Image --> Mode "RGB Color" is checked. Under Image --> Convert Color Profile "Convert to sRGB" is grayed out whereas "Convert to Adobe RGB" is highlighted.
Sounds like it was already an sRGB file. So you can open it in Elements? Go ahead and convert it to Adobe RGB and try again to open it in CNX2. If it was a standard office copier, it may have been done in greyscale and that is why it would not open in CNX2. I am not familiar with Elements. If it has an info mode where you can see all the file data it should clearly tell you the color mode stored in the file. Another possibility is it has no color mode assigned,
It's possible that even though it shows as RGB in Elements that the mode was not properly saved in the file from the copier. It could be worth resaving the file from within elements or any other program that will open the image to help ensure that RGB color mode is indeed saved with the file.
>Sounds like it was already an sRGB file. So you can open it >in Elements? Go ahead and convert it to Adobe RGB and try >again to open it in CNX2. If it was a standard office copier, >it may have been done in greyscale and that is why it would >not open in CNX2. I am not familiar with Elements. If it has >an info mode where you can see all the file data it should >clearly tell you the color mode stored in the file. Another >possibility is it has no color mode assigned,
sRGB and aRGB designate a color space. which is not the same as RGB or Grayscale encoding mode.
An RGB image has data in three different channels, one each for Red, Green, and Blue colors. A Greyscale image has only one data channel, and no color information exists.
It is possible that CNX2 cannot read an image file encoded with only as single image data channel.
"It is possible that CNX2 cannot read an image file encoded with only as single image data channel."
Sloppiness on my part of course it is the color mode in the file. Color space can be assigned in a post processor if the image can be opened. Since the definition of a greyscale image is that it contains no color data, it is therefore a single image data channel and cannot be opened in CNX2. In most programs when you convert to B&W you still have an underlying color image with three channels. CNX2 cannot open layered files, nor greyscales.
From the CNX2 Manual:
"Images saved in the Grayscale and CMYK color modes cannot be opened within Capture NX 2."