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Tutorials

50. Changing image resolution with Resize

Image resolution change is needed "for screens", that is, when posting your final artwork on social network websites, and "for print", that is, for printing your final artwork.

First of all, we are going to look at the resolution setting for screens.

From ① the Tool Selection window, select ② Canvas tool.

Select ① Resize.

Turn on ① Keep Aspect Ratio.
Resolution change for screens can be done by selecting ② Pixels.
For screens, you will be changing the pixel count (px), instead of dpi.
Change ③ the Width (px) from 768 to 50. Once you are done, tap on ④ ✓ to finish.

Setting the pixel count to a significantly lower resolution worsens the image quality.
If you decrease the pixel count, you will get more maximum layer limit. Once you reach your maximum layer, try decreasing the pixel count. Also, decreasing the size of the canvas can help you work faster, and make the files take up less space on your device. Now, you can adjust the size of the screen with pixel count (px), and not with dpi.

Next, we will cover resolution settings for printing.
For artwork you would like to print, you can change the canvas size in mm and resolution (dpi). Set the dpi to minimum 300 for clean printed results. Dpi refers to dots per inch (25.4mm).
Caution: when requesting a printing shop to print your artwork, make sure to be aware of your dpi and size. It is extremely difficult to change the dpi afterwards.

Turn on ① Keep Aspect Ratio. Changing resolution for artwork to be printed can be done by first selecting ② Print.
In print, select dpi. Adjust ③ the dpi from 350 to 50.
Once you are done setting the new value, tap on ④ ✓ to finish.

Decreasing the dpi as shown will worsen the image quality.
Next, we will cover reduction calculation method.

Turn on ① Keep Aspect Ratio. Set the size: ② Width(px) from 768 to 150.
Tap ③ Linear, to select a calculation method from Sampling, Linear, and Trilinear.

This is a comparison image.
From the left, the quality changes from low to medium to high. Normally, we suggest choosing Trilinear (since Trilinear uses hardware functions, it may not be applicable in some devices).
Next, we will cover magnification calculation method.

Turn on ① Keep Aspect Ratio. Set the size: ② Width (px) from 50 to 1,500. Tap ③ Linear, and choose a calculation method from Nearest Neighbor and Linear.

Here is an image quality comparison between canvases processed by Nearest Neighbor and Linear. Normally, it's better to choose Linear.

Chapter

  1. 01.
    Introduction
  2. 02.
    Start Creating an Artwork
  3. 03.
    Toolbar and Tool Selection
  4. 04.
    Do Your Draft Sketch by Hand
  5. 05.
    About Layers
  6. 06.
    Let's Trace
  7. 07.
    Undo and Eraser
  8. 08.
    Fine Tuning Using the Lasso tool
  9. 09.
    Check by Reflecting Horizontally
  10. 10.
    Select Colors in the Color window
  11. 11.
    Use Color Fill for the Undercoat
  12. 12.
    Turn Clipping On
  13. 13.
    Making a Gradation (Shading)
  14. 14.
    Quick Eyedropper Function
  15. 15.
    Create Highlights and Shadows
  16. 16.
    Paste a Texture
  17. 17.
    Let's Merge Layers
  18. 18.
    Sign Your Artwork
  19. 19.
    View Your Artwork
  20. 20.
    Post Your Artwork
  21. 21.
    Share Your Artwork
  22. 22.
    Prime Membership / Remove Ads Add-on
  23. 23.
    Rearrange artworks
  24. 24.
    Make custom brush
  25. 25.
    Installing and Exporting the Custom Brush
  26. 26.
    Release a Custom Brush to the Online Gallery
  27. 27.
    Brush Export and Import
  28. 28.
    Add Color to the Analog Image using Multiply
  29. 29.
    Open your ibisPaint data in Clip Studio Paint
  30. 30.
    Stabilizer
  31. 31.
    Layer: Clipping is convenient
  32. 32.
    Layer: Changing the color with Alpha Lock
  33. 33.
    Layer: Let's try using Screen Tone
  34. 34.
    Layer: Selection Layer
  35. 35.
    Layer: Save Layer as Transparent PNG command
  36. 36.
    Layer: Naming your layers to manage them
  37. 37.
    Layer: Rasterize
  38. 38.
    Layer: Layer Folders
  39. 39.
    Layer: Folder Move/Transform
  40. 40.
    Layer: Add Layer from Canvas
  41. 41.
    Save canvas as Transparent PNG
  42. 42.
    Make the background transparent with Eraser Bucket
  43. 43.
    Putting texture to the floor with Perspective Form
  44. 44.
    Skirt with Mesh Form
  45. 45.
    Entering text with Text tool
  46. 46.
    Creating manga with Frame Divider tool
  47. 47.
    Enlarging the canvas with Canvas Size
  48. 48.
    Cutting off the canvas with Trim
  49. 49.
    Canvas creation with resolution (dpi) specification
  50. 50.
    Changing image resolution with Resize
  51. 51.
    Texture with Material tool
  52. 52.
    Cut, Copy, Paste
  53. 53.
    Ruler: Straight Ruler
  54. 54.
    Ruler: Circular Ruler
  55. 55.
    Ruler: Elliptical Ruler
  56. 56.
    Ruler: Radial Ruler
  57. 57.
    Ruler: Mirror Ruler
  58. 58.
    Ruler: Kaleidoscope Ruler
  59. 59.
    Ruler: Array Ruler
  60. 60.
    Ruler: Perspective Array Ruler
  61. 61.
    Drawing Tool: Straight Line
  62. 62.
    Drawing Tool: Rectangle
  63. 63.
    Drawing Tool:Circle
  64. 64.
    Drawing Tool:Ellipse
  65. 65.
    Drawing Tool:Regular Polygon
  66. 66.
    Drawing Tool:Bezier Curve
  67. 67.
    Drawing Tool:Polyline
  68. 68.
    Drawing Tool:Fill
  69. 69.
    Special: Liquify Pen
  70. 70.
    Special: Lasso Fill
  71. 71.
    Special: Lasso Eraser
  72. 72.
    Special: Copy Pen
  73. 73.
    Filter: Brightness & Contrast
  74. 74.
    Filter: Tone Curve
  75. 75.
    Filter: Hue Saturation Lightness
  76. 76.
    Filter: Color Balance
  77. 77.
    Filter: Extract Drawing
  78. 78.
    Filter: Find Edges (Handwriting)
  79. 79.
    Filter: Edge Detection
  80. 80.
    Filter: Change Drawing Color
  81. 81.
    Filter: Mono Color
  82. 82.
    Filter: Gray Scale
  83. 83.
    Filter: Black & White
  84. 84.
    Filter: Posterize
  85. 85.
    Filter: Gradation Map
  86. 86.
    Filter: Gaussian Blur
  87. 87.
    Filter: Zooming Blur
  88. 88.
    Filter: Moving Blur
  89. 89.
    Filter: Lens Blur
  90. 90.
    Filter: Mosaic
  91. 91.
    Filter:Unsharp Mask
  92. 92.
    Filter:Frosted Glass
  93. 93.
    Filter: Stroke (Both)
  94. 94.
    Filter: Stained Glass
  95. 95.
    Filter: Wet Edge
  96. 96.
    Filter: Glow (Inner)
  97. 97.
    Filter:Bevel
  98. 98.
    Filter: Emboss
  99. 99.
    Filter: Relief
  100. 100.
    Filter: Waterdrop (Rounded)
  101. 101.
    Filter: Stroke (Outer)
  102. 102.
    Filter: Glow (Outer)
  103. 103.
    Filter: Drop Shadow
  104. 104.
    Filter: Extrude
  105. 105.
    Filter: God Rays
  106. 106.
    Filter: Parallel Gradation
  107. 107.
    Filter: Concentric Gradation
  108. 108.
    Filter: Radial Line Gradation
  109. 109.
    Filter: Radial Line
  110. 110.
    Filter: Speed Line
  111. 111.
    Filter: Clouds
  112. 112.
    Filter: QR Code
  113. 113.
    Filter: Auto Paint
  114. 114.
    Filter: Anime Background
  115. 115.
    Filter: Manga Background
  116. 116.
    Filter: Channel Shift (Color Shift, RGB Shift)
  117. 117.
    Filter:Glitch
  118. 118.
    Filter:Noise
  119. 119.
    Filter: Chrome
  120. 120.
    Filter: Bloom
  121. 121.
    Filter: Cross Filter
  122. 122.
    Filter:Sheer
  123. 123.
    Filter: Pixelate Crystalize
  124. 124.
    Filter: Hexagonal Pixelate
  125. 125.
    Filter: Square Pixelate
  126. 126.
    Filter: Triangular Pixelate
  127. 127.
    Filter: Pointillize
  128. 128.
    Filter: Dots (Hexagonal)
  129. 129.
    Filter: Dots (Square)
  130. 130.
    Filter: Expansion
  131. 131.
    Filter: Fisheye Lens
  132. 132.
    Filter: Sphere Lens
  133. 133.
    Filter:Wave
  134. 134.
    Filter: Ripple
  135. 135.
    Filter: Twirl
  136. 136.
    Filter: Polar Coordinates
  137. 137.
    Filter: Table
  138. 138.
    Filter: Blur Frame
  139. 139.
    Switching devices / transferring data (with Dropbox)
  140. 140.
    Switching devices / transferring data (with SD card on Android)
  141. 141.
    Switching devices / transferring data (with PC on iOS)
  142. 142.
    Model change / Transfer (Backup settings)
  143. 143.
    Settings window details
  144. 144.
    Details of Brush Parameters
  145. 145.
    Bucket tool details
  146. 146.
    Transform tool details
  147. 147.
    Blend mode details
  148. 148.
    How to upload transparent PNG onto Twitter
  149. 149.
    How to export Photoshop file (PSD)
  150. 150.
    How To Draw Manga (Monochrome two-tone printing)
  151. 151.
    Keyboard Shortcuts
  152. 152.
    Notes About Tracing