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DarkstarDesigns says

I recently uploaded a new item and i had made it in 3d and normally the best format to render out if a tiff file with embedded alpha channel. but went to select it from the list of file types it was not there.

At work i am a multimedia designer, and when i get pictures from professional photographers they are nearly always in tiff format or only raw if no work has been done on the images.

It seems very strange to me that it is not an excepted file type, i will contact support, but i thought it would be interesting to get all of your feedback,

look forward to hearing your opinions.

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Kvakin says
when i get pictures from professional photographers

Whoa! I found answer in your question.

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DarkstarDesigns says

ah thanks for that!

I have had a play around in 3D and found 2 other formats that i can use that also have alpha channels built in when you render them/

The new formats are

    PNG Targa
  • which of these do you think would be best?

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rayspettersson says

I think that TIFF file sizes are on average bigger than JPG , right? So, maybe Graphic River wants to cut down bandwidth usage by limiting the type of file we can upload. Anyone can confirm that? Thanks! Ray Pettersson.

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DarkstarDesigns says

ah thanks for that!

I have had a play around in 3D and found 2 other formats that i can use that also have alpha channels built in when you render them/

The new formats are

PNG Targa

which of these do you think would be best?

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DarkstarDesigns says
I think that TIFF file sizes are on average bigger than JPG , right? So, maybe Graphic River wants to cut down bandwidth usage by limiting the type of file we can upload. Anyone can confirm that? Thanks! Ray Pettersson.

my problem is i am rendering out from a 3d program and i need the file format to have alpha channels, so i can easily cut-out the object, but if i use a jpg i would have to cut it out in photoshop, also i would not be able to cutout glass things well as they are transparent.

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Kvakin says
my problem is i am rendering out from a 3d program and i need the file format to have alpha channels, so i can easily cut-out the object, but if i use a jpg i would have to cut it out in photoshop, also i would not be able to cutout glass things well as they are transparent.

I use .png 24 bit with alpha for saving 3DS Max renders.

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JinWook says
I think that TIFF file sizes are on average bigger than JPG , right? So, maybe Graphic River wants to cut down bandwidth usage by limiting the type of file we can upload. Anyone can confirm that? Thanks! Ray Pettersson.

Yeah a .TIFF is an uncompressed raster image. It’s used for high resolution printing. They have absolutely no business being on the internet.

I use .png 24 bit with alpha for saving 3DS Max renders.

That’s the ticket.

JPEG is a lossy compressed bitmapped (raster) image that does not support transparency.

PNG is a a lossless compressed bitmapped image that integrates alpha channels.

Obviously PNG files are going to be larger than JPEG because of the extra data so online they’re generally used for small graphics that require transparency. Web buttons etc.

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ArikB says

How can a file be lossless yet compressed? This is over my head… :P

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JinWook says

Technicalities aside, a lossy compression is when some of the data in the original file is permanently removed when you save it out thus reducing the size of your final file.

A lossless compression is when the original data is compressed within the file, not removed. Almost like zipping the data. So when you open the file the data is uncompressed and you have the exact original that you saved out. The compression of the data does reduce file size but only marginally compared to removing the data completely like lossy does.

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