How to design a widescreen banner in Photoshop?

Question

Design

Tell me how to design a wide-format banner (330cm x 140cm - for a Gazelle)?
1. It is the setting that interests you when creating a document. I, as I understand it, CMYK, 150 (72 is probably not enough, 300 is a lot) dpi? Width and height 1k1? Those. 330 cm by 140 cm?
2. The visual design itself is not of interest.
3. And print settings (file) upon delivery to the printing studio. TIFF?
4. Minimum photo resolution?
I guess that such things need to be done in a chandelier, vector ...
Help me out a lot.

Answer 1

For large format printing, set 72 dpi, for interior printing - at least 144.
Accustom yourself to millimeters, set 3300 by 1400 mm. In the settings, make sure that the stroke is also measured in millimeters. Make sure that the lines are not thinner than 0.35 mm (and for other higher-quality printing technologies - at least 0.1 mm), also choose the size of a small font, first measuring the thickness of the thin strokes in it - otherwise it will not be printed well or not printed at all.
Do not forget to give the layout a frame 0.5-1 mm thick, not very noticeable, along which the banner will be cut. Take away important information from the edge by at least 50 mm - as IdiIubey said above, it is better to have a margin so that a crooked postprinter does not spoil the design.
It is advisable to keep track of the amount of colors. In large format printing, this is of course not as important as in offset, BUT often advertising and production companies use either bird dropping inks or equipment made from bird droppings, and the paints can leak. I try to make sure that the sum of colors at each point does not exceed 290-310% (C+M+Y+K).
InDesign will help to check the layout for the amount of colors, there seems to be no such useful thing in the chandelier. Or you can keep in mind all the overlapping fills and mentally calculate the amount of colors - for a simple design it will do. You just have to mix the layers with care.
Don't use very light fills. I usually try not to go below 5% - this color can stupidly fall into white.
All these troubles depend on the directness of the typography ... And as a rule, you should not count on their directness.
The file can also be submitted as TIFF. The main thing, whatever format you choose, make sure that it is in the CMYK color model. I usually submit the source, PDF and jpeg / tiff (it's easier to use jpeg at maximum quality - it is not inferior to tiff, and it can be viewed with a regular viewer).