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Hi everyone.

Here's a cropped section of a decal I'm using on my current project. Beneath that is how it comes out in the render (just a quick low quality one to show what's happening).

Image in Photoshop


Image in render


As you can see, the drop shadow from the red section onto the yellow is no longer there, and the black shadow on the text has turned white. Like all the other decals I've used, it's a standard RGB jpg image, no different to the others.

Any idea why the black isn't showing up or is changing colour? Thanks.

Hi Rob,

have you tried saving the jpg to a different name and replaced the image in your mxm to the new filename?

I have experienced many occasions where maxwell refuses to reload the image when rendering, linking it with a new name usually did the trick for me.

Is the image CMYK or has a mask? Can you upload this texture?

As far as I know JPGs can not have masks in Photoshop

Rob, what about this?


So, I suspect your JPEG is not RGB and you should convert it to RGB.

JorisMX wrote:As far as I know JPGs can not have masks in Photoshop

Once I didn't know, too. Did you know you can save Path information in JPEGs and use it as clipping path (a kind of mask) in some applications?

Any more questions, class?

thats a channel not a mask

but youre right tom, never work in cmyk !

Thanks for the replies everyone - problem solved!

The image was indeed in CMYK (it's not one I made, but was provided), which is why I said in the original post it was RGB as I assumed it would be... Must check in the future! Thanks again.

JorisMX wrote:thats a channel not a mask

I didn't refer CMYK's K when saying mask

Copy2:
Did you know you can save Path information in JPEGs and use it as clipping path (a kind of mask) in some applications?

Oh, well...

tom wrote:

JorisMX wrote:As far as I know JPGs can not have masks in Photoshop

Once I didn't know, too. Did you know you can save Path information in JPEGs and use it as clipping path (a kind of mask) in some applications?

Ah, missed this in my last post...

We do this all the time when working on printdocuments in indesign, back when there was only quark everything had to be done the long way, now we have psd and transparencies as clipping/masking paths. Its alot more comfortable now than it used to be.

And to some extent a channel like R*G*B* is only a black/white mask too, so youre actually right

Yes, actually I'm also a DTP professional since FH was introduced by Aldus. Although, now heavily working on dear Corel.