A Fuji Frontier? I thought you said it was on canvas. The frontier produces chemical prints ... no canvas. Maybe you’re trying to convince them to use paper instead of canvas.
Wayne many thanks for this I had not even realised that the Fuji Frontier is a chemical printer (the Frontera was a car and Fuji do not make them yet
) - been out of the loop really just making my own prints and never on canvas.
I think the file size issue you are seeing is a non issue. Once you get the image ready to print, you will produce a jpeg file. Even a high quality setting jpeg file at that size would be well under 20mb. If the place is limiting the actual tiff size to 20mb probably need to look elsewhere.
I would also shy away fronm a lab throwing out the 150dpi number. No reason for that. Yes canvas can’t hold up the detail much better than that, and faces should be fine, but most output houses should be able to work with a 280 or 360 dpi number.
So I would make the file 20x16 by 360 if printing to canvas, 300 if printing to fuji frontier. Arrange everything, when it’s perfect, flatten it, save it as a jpeg file at highest quality.
Yes, the file size for me at least is a non issue and in fact a JPEG at 300 ppi is around 18.4MB and at 360 about 22.7MB. I have totally ruled out the lab that quoted 20MB and 150 dpi numbers.
I think that I need to do a little more research on where I am going to send the file and find out exactly what printer is being used for canvas as I guess that the 300 ppi figure would be based on either Canon or HP and if 360 ppi this would be Epson. The fact that no profile required also concerns me with the second lab, quote "With regards to the profile we will take care of this for you we only require you to do it for standard photographic prints
". So I think a little more research in order