Request for advice: When using PS to make book covers for printing, what resolution should be used for the material pictures, and how to check the picture resolution.
Generally, when making a book cover, A4 size paper with a resolution of 300ppi is enough. The material picture only needs to be large, as long as it is not too small and blurry. Select the layer where the material you want to adjust is located, and use Ctrl+T to select the material layer to adjust the size of the material.
When making pictures and designing, the higher the resolution, the better, because it can be adjusted when printing. Large resolutions can be lowered, but low resolutions cannot be raised. Considering the computer configuration As well as the size of the book cover and how much memory it takes up, 300ppi is enough, and generally 72ppi is enough.
Extended information:
Resolution and pixels are two different units. Images have four parameters: capacity, pixels, size, and resolution:
1 Capacity: refers to the storage space of image files, that is, the size of the file, generally expressed in Kb and Mb.
2. Pixel: refers to the product or product formula of width and height pixels: such as 3000×4000, or 12 million.
3. Resolution: refers to the total number of pixels per unit length, which represents the density of pixels, generally expressed in pixels/inch or pixels/cm.
4. Size: refers to the physical size of the image after printing.
Reference source:
China National Knowledge Infrastructure - How to create e-books for resolution-related papers?
It is recommended to use Yunzhan.com as a free online e-book production platform. Yunzhan.com offers one-click production, quick sharing, multi-dimensional data analysis, and one-stop precision marketing. It supports full-text search/catalog/bookcase bookshelf/download offline reading and other functions, and the operation is simple and convenient.
Advantages of Yunzhan.com:
1. You can upload PDF/PPT/Word/pictures, such as textbooks/brochures/magazines/internal journals/documents, etc.;
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3. Generate link/QR code applet, which can be read by mobile phones/tablets/computers (readers do not need Register);
4. Support full-text search/catalog/bookcase bookshelf/download offline reading and other functions.
Click to start the production journey immediately
If you want to know more about the production of e-books, it is recommended to choose Yunzhan.com, a subsidiary of Wancai Information. Use Yunzhan.com to create an independent e-book and share it as a link and QR code, making it easier for others to read and promote it; the content of the album can be modified at any time, but the link/QR code will not change; the conversion will be automatic Generate a 3D book flipping effect, and enterprise-level members can also add multimedia to make the book more vivid and interesting, improve the reading experience, and make readers more willing to flip through. Where do materials come from?
Materials are unrefined and processed writing materials, which are the material basis of composition, just like the roots of wood and the source of water. As the saying goes: "It is difficult for a clever woman to make a meal without rice." This means that without materials, even a skilled craftsman cannot make exquisite utensils. Child psychology shows that when students write, they must first have the relevant materials, central ideas, paragraph levels, and language expressions for writing - everything cannot be discussed from scratch. Therefore, students’ compositions must have abundant materials. "The so-called "rich" is the result of extensive absorption and accumulation. So, how to accumulate rich materials? I summarized the past teaching practice, there are two main ways:
1. Accumulate materials from real life< /p>
Life is the source of writing. So, how to collect the sources of writing in life? I think: First, we must enrich students’ lives. The primary school Chinese syllabus points out: “To guide primary school students in composition, we must start with content. "Content is writing materials, and writing materials come from life. The richer life is, the more materials are accumulated. Psychology shows that children are naturally playful and active. Teachers should seize this psychological characteristic and organize some work in a planned and purposeful way. Useful extracurricular activities, such as spring outings, cultural and sports activities, reading activities, speech activities, watching TV, listening to the radio, etc., can enrich students' life experience and accumulate writing materials.
2. Accumulate materials from books.
The materials in books also reflect the reality of life. How to accumulate materials in books? The ancients said it well: "Reading thousands of volumes, writing is like having a spirit." "I have read three hundred Tang poems by heart, and can recite them even if I can't compose them." "This tells people that accumulating materials in books depends on reading more and memorizing more beautiful written words and sentences, good fragments, and excellent compositions. In order to accumulate words and sentences, material selection and conception, levels and paragraphs, detailed writing and abbreviation, Writing skills such as beginning and end, transition and anaphora, etc., allow students to read more and think more deeply, and draw inferences from one example.
Fourth, strengthen guidance and teach writing methods
Most students have trouble writing. The extreme nature shown is "the image of things flashes in front of my eyes, but I can't describe it in my pen." "So in actual teaching, we must do the following:
First, integrate composition teaching throughout the entire Chinese reading teaching. Each text is a good model for students to read on the basis of repeated reading. , remind students to pay attention to how someone starts, how they collect and organize materials, how they pronounce words and sentences, and how they end.
Second, carefully review the topic and clarify the scope and writing focus of this essay. In composition teaching, we usually come into contact with the narrative style, and the content to be learned is mainly characters, events, and environments. . But characters, events, and environment are often intertwined with each other, and each has its own emphasis. Therefore, students must be made clear about the focus of each exercise, whether it is too digressive or the same.
Third, to enable students to have something to say when writing, teachers must fully prepare lessons, clarify writing purposes and requirements, and pay attention to capturing people, things and even the surrounding environment that students can see and touch. , remember to write the composition title on the blackboard and say it with a few simple requirements.
Fourth, help students prepare writing outlines. The outline is the conception process of students' compositions, because when students write compositions, they either have nothing to say, or they are incoherent and full of empty words. From the moment they open their eyes in the morning to writing when they go to bed and turn off the lights at night, it is a running account. This requires a process of organizing and sorting out materials to figure out what should be written in detail, what should be written briefly, what should be written first, and what should be written later, so that it is orderly and clear.