https://www.andreageremia.it/tutorial.html Free tutorials for Foundry Nuke by Andrea Geremia, VFX compositor: the maths of compositing, matrices, keying, Python and TCL, gizmos. en Tue, 13 Oct 2026 14:31:45 GMT https://www.andreageremia.it/images/favicon.icohttps://www.andreageremia.it/tutorial.html https://www.andreageremia.it/tutorial_math_edgedetect.html https://www.andreageremia.it/tutorial_math_edgedetect.html Tue, 13 Oct 2026 14:32:45 GMT Edge detection for compositors: derivatives as kernels, Sobel, Prewitt, Scharr and Roberts, gradient magnitude and direction, Nuke's EdgeDetect measured, noise and scale, Laplacian and high pass, Canny, edge bands of a matte, rim light from the alpha. With a lab and nodes to paste. https://www.andreageremia.it/tutorial_convolve.html https://www.andreageremia.it/tutorial_convolve.html Tue, 13 Oct 2026 14:28:45 GMT Use an image as a kernel with the Convolve node in Nuke to create bokeh, understand the Fourier transform and the convolution theorem, and undo a blur with Wiener and Richardson-Lucy deconvolution. With an interactive lab. https://www.andreageremia.it/tutorial_matrix_3d.html https://www.andreageremia.it/tutorial_matrix_3d.html Tue, 13 Oct 2026 14:27:45 GMT How the 4x4 matrices of Nuke 3D nodes work: local and world matrix, transform and rotation order, world_matrix expressions, Python helpers and projecting a 3D point to 2D. With an interactive lab. https://www.andreageremia.it/tutorial_morphology.html https://www.andreageremia.it/tutorial_morphology.html Tue, 13 Oct 2026 14:26:45 GMT Erode, Dilate and Median in Nuke explained: max and min instead of a weighted sum, kernel shapes, the three Erode nodes, open and close, edge mattes and despeckle. With a live lab and nodes to paste. https://www.andreageremia.it/tutorial_cornerpin_homography.html https://www.andreageremia.it/tutorial_cornerpin_homography.html Tue, 13 Oct 2026 14:25:45 GMT The 3x3 homography behind the CornerPin2D node in Nuke: affine vs projective, the divide by w, why four corners, flatten and put back, Python helpers and a live lab that writes the CornerPin for you. https://www.andreageremia.it/tutorial_blink_matrices.html https://www.andreageremia.it/tutorial_blink_matrices.html Tue, 13 Oct 2026 14:24:45 GMT Matrices in BlinkScript for Nuke: float3x3 and float4x4, operators and methods, and four ready kernels: a 4x4 ColorMatrix with offset, position pass to camera space, homography warp and a 3x3 convolution. Plus a matrix calculator. https://www.andreageremia.it/tutorial_math_merge.html https://www.andreageremia.it/tutorial_math_merge.html Tue, 13 Oct 2026 14:23:45 GMT The maths behind the Merge node in Nuke: over, plus, screen, multiply, max and min, what premultiplied means and why you unpremult before grading. With a live lab and nodes to paste. https://www.andreageremia.it/tutorial_math_grade.html https://www.andreageremia.it/tutorial_math_grade.html Tue, 13 Oct 2026 14:22:45 GMT What the Grade node really computes, read from Foundry's source code: blackpoint, whitepoint, lift, gain, multiply, offset and gamma, the gamma above 1, the clamps, reverse and the CDL. With a live lab and nodes to paste. https://www.andreageremia.it/tutorial_math_colorcorrect.html https://www.andreageremia.it/tutorial_math_colorcorrect.html Tue, 13 Oct 2026 14:21:45 GMT How the ColorCorrect node works: master, shadows, midtones and highlights, the range curves, the order of saturation, contrast, gamma, gain and offset, contrast around 0.18. With a live lab and nodes to paste. https://www.andreageremia.it/tutorial_math_hue.html https://www.andreageremia.it/tutorial_math_hue.html Tue, 13 Oct 2026 14:20:45 GMT The maths of the colour nodes in Nuke: the Saturation node and its luminance math, HSV, HSVTool, HueCorrect curves and suppression, despill, HueShift in XYZ. With a live lab and nodes to paste. https://www.andreageremia.it/tutorial_math_keying.html https://www.andreageremia.it/tutorial_math_keying.html Tue, 13 Oct 2026 14:19:45 GMT How every keyer in Nuke computes the alpha, measured in Nuke 17: luma key, Keyer, Difference, HueKeyer, the colour difference key, IBK and IBKColour, Keylight, ChromaKeyer, Primatte, Ultimatte and the additive keyer. With a lab on real green and blue screen plates. https://www.andreageremia.it/tutorial_math_despill.html https://www.andreageremia.it/tutorial_math_despill.html Tue, 13 Oct 2026 14:18:45 GMT Despill explained with numbers: the limit despill and its variants (min, average, max, double average), blue screens, the spill map, giving back the luminance as grey or as the background colour, screen subtraction and what IBK and Keylight do. With a lab on real plates. https://www.andreageremia.it/tutorial_math_match.html https://www.andreageremia.it/tutorial_math_match.html Tue, 13 Oct 2026 14:17:45 GMT The maths of colour matching in Nuke: black and white levels, BlacksMatch and Toe, matching the low frequencies with blur ratios, multiply or add, luminance and chroma with separate amounts. With a lab and a ColourMatch node to paste. https://www.andreageremia.it/tutorial_math_edgeextend.html https://www.andreageremia.it/tutorial_math_edgeextend.html Tue, 13 Oct 2026 14:16:45 GMT Why premult, blur, unpremult extends colour outwards (normalized convolution), the core matte, why one blur is never enough, stacked and directional extends, holes in mattes. With a lab and an EdgeExtendStack node. https://www.andreageremia.it/tutorial_math_linlog.html https://www.andreageremia.it/tutorial_math_linlog.html Tue, 13 Oct 2026 14:15:45 GMT Why compositing happens in scene linear: stops and 18% grey, the sRGB and Rec.709 curves, why blurs and merges need linear, Cineon and ACEScct log. With a live lab and nodes to paste. https://www.andreageremia.it/tutorial_math_filtering.html https://www.andreageremia.it/tutorial_math_filtering.html Tue, 13 Oct 2026 14:14:45 GMT What Nuke filters really are, measured in Nuke 17: the Mitchell-Netravali family (cubic, Keys, Simon, Rifman, Mitchell, Parzen, notch), Lanczos and sinc4, ringing, aliasing, concatenation, upscaling, banding and dither. With a filter lab. https://www.andreageremia.it/tutorial_math_vectors.html https://www.andreageremia.it/tutorial_math_vectors.html Tue, 13 Oct 2026 14:12:45 GMT Vector maths for compositors: length and normalize, the dot product to relight with normals, the cross product, position pass mattes and motion vectors. With a live lab and nodes to paste. https://www.andreageremia.it/tutorial_math_trig.html https://www.andreageremia.it/tutorial_math_trig.html Tue, 13 Oct 2026 14:11:45 GMT Degrees and radians, the unit circle, hypot for distances and atan2 for angles: rotation and scale from two tracks, orbits and pendulums in Nuke expressions. With a live lab and nodes to paste. https://www.andreageremia.it/tutorial_math_expressions.html https://www.andreageremia.it/tutorial_math_expressions.html Tue, 13 Oct 2026 14:10:45 GMT Animate without keyframes in Nuke: frame and time offsets, lerp, clamp and smoothstep, sine, square and triangle waves, random, noise and fBm, holds and loops. With a wave generator and nodes to paste. https://www.andreageremia.it/tutorial_tcl.html https://www.andreageremia.it/tutorial_tcl.html Tue, 13 Oct 2026 14:08:45 GMT A collection of TCL snippets for Foundry Nuke: value and knob, labels, Text node burn-ins, file paths for Read and Write nodes, strings, lists, conditions, pixels and Nuke expressions. https://www.andreageremia.it/tutorial_aces_8bit.html https://www.andreageremia.it/tutorial_aces_8bit.html Tue, 14 Jul 2026 22:36:40 GMT How to interpret 8-bit sRGB images (JPEG, PNG) in an ACES compositing pipeline in Nuke: Utility sRGB Texture vs Output sRGB, why white becomes 16, and which one to choose. https://www.andreageremia.it/tutorial_free_test_images.html https://www.andreageremia.it/tutorial_free_test_images.html Fri, 03 Jul 2026 13:12:37 GMT A free zip of reference test images for compositors: Kodak Marcie (LAD) also in log space, Macbeth ColorChecker charts, grayscales and PLUGE, plus useful links. https://www.andreageremia.it/tutorial_nuke16.html https://www.andreageremia.it/tutorial_nuke16.html Tue, 14 Apr 2026 06:26:58 GMT Nuke 16 moved from PySide2 (Qt5) to PySide6 (Qt6). How to fix ModuleNotFoundError: No module named PySide2 and update your Python tools. https://www.andreageremia.it/tutorial_free_files.html https://www.andreageremia.it/tutorial_free_files.html Mon, 17 Apr 2023 16:41:25 GMT Download for free a complete Full HD CG frame with render passes and Nuke script from the personal project Helicopter, for your tests and tutorials. https://www.andreageremia.it/tutorial_vector_blur.html https://www.andreageremia.it/tutorial_vector_blur.html Thu, 13 Apr 2023 15:35:01 GMT Pros and cons of the VectorBlur node in Nuke 9 compared with the new VectorBlur in Nuke 10.5: motion vectors and motion blur. https://www.andreageremia.it/tutorial_uvrender.html https://www.andreageremia.it/tutorial_uvrender.html Thu, 13 Apr 2023 15:34:56 GMT A gizmo to extract UVs easily and speed up work with 3D space and UVs in Nuke. https://www.andreageremia.it/tutorial_tractor.html https://www.andreageremia.it/tutorial_tractor.html Thu, 13 Apr 2023 15:34:51 GMT Check the status of your renders on the Tractor render farm directly inside Nuke, with a Python tool. https://www.andreageremia.it/tutorial_timeoffset.html https://www.andreageremia.it/tutorial_timeoffset.html Thu, 13 Apr 2023 15:34:46 GMT Python tool for Nuke to time offset all the keyframes and lifetime of a node, including every brush and shape in RotoPaint and Roto. https://www.andreageremia.it/tutorial_speedyscript.html https://www.andreageremia.it/tutorial_speedyscript.html Thu, 13 Apr 2023 15:34:41 GMT Free panel for Foundry Nuke that improves import and export of scripts, or parts of them, using Groups to save time and RAM. https://www.andreageremia.it/tutorial_python_tcl.html https://www.andreageremia.it/tutorial_python_tcl.html Thu, 13 Apr 2023 15:34:30 GMT Python and TCL snippets for Nuke, ready to copy: create, select and connect nodes, read and write knobs, animation curves, expressions, callbacks and custom panels. https://www.andreageremia.it/tutorial_particles_collection.html https://www.andreageremia.it/tutorial_particles_collection.html Thu, 13 Apr 2023 15:34:25 GMT Free particle templates for Nuke with tutorials, ready to install as toolsets: never start a particle setup from scratch again. https://www.andreageremia.it/tutorial_panel_qtpy.html https://www.andreageremia.it/tutorial_panel_qtpy.html Thu, 13 Apr 2023 15:34:19 GMT Create a custom panel for Nuke with Python and QtPy: a quick step by step tutorial with code you can reuse. https://www.andreageremia.it/tutorial_nuke10_nuke11.html https://www.andreageremia.it/tutorial_nuke10_nuke11.html Thu, 13 Apr 2023 15:34:10 GMT Differences between Nuke 10 and Nuke 11 that compositors notice in daily work, such as the CornerPin node and other changes. https://www.andreageremia.it/tutorial_mocha_frame_range.html https://www.andreageremia.it/tutorial_mocha_frame_range.html Thu, 13 Apr 2023 15:34:05 GMT How to extend the frame range in Mocha Pro and adjust the keyframes of your roto shapes without losing work. https://www.andreageremia.it/tutorial_matrix.html https://www.andreageremia.it/tutorial_matrix.html Thu, 13 Apr 2023 15:34:00 GMT Convolution matrix tutorial for Nuke with a gizmo of the most popular 3x3 filters: blur, sharpen, emboss, outline and edge detection. https://www.andreageremia.it/tutorial_matrix_transform.html https://www.andreageremia.it/tutorial_matrix_transform.html Thu, 13 Apr 2023 15:33:53 GMT Explore 2D transformations through a matrix in Nuke: translate, rotate, scale and skew, with two modified Nuke nodes to download. https://www.andreageremia.it/tutorial_label_autolabel.html https://www.andreageremia.it/tutorial_label_autolabel.html Thu, 13 Apr 2023 15:33:43 GMT Customize the label and autolabel of your Nuke nodes with Python: show knob values on the nodes, with examples and a panel ready for your menu.py. https://www.andreageremia.it/tutorial_invert_stmap.html https://www.andreageremia.it/tutorial_invert_stmap.html Thu, 13 Apr 2023 15:33:37 GMT Two ways to invert an STMap in Nuke, for UV maps and lens distortion: an Expression node setup and C_STMap, with the node scripts ready to copy. https://www.andreageremia.it/tutorial_html_with_nuke.html https://www.andreageremia.it/tutorial_html_with_nuke.html Thu, 13 Apr 2023 15:33:32 GMT How to style node and gizmo labels in Nuke with simple HTML tags: colors, fonts, size and formatting. https://www.andreageremia.it/tutorial_expression_node.html https://www.andreageremia.it/tutorial_expression_node.html Thu, 13 Apr 2023 15:33:20 GMT Free collection of ready-made Expression node tools for Nuke, built during production work at Trixter: copy the node scripts or install the whole toolset. https://www.andreageremia.it/tutorial_edge_rim_light.html https://www.andreageremia.it/tutorial_edge_rim_light.html Thu, 13 Apr 2023 15:33:13 GMT Create a fast 2D rim light in Nuke from the alpha of a character or object, using a 3x3 matrix and a rotation control. https://www.andreageremia.it/tutorial_colormatrix.html https://www.andreageremia.it/tutorial_colormatrix.html Thu, 13 Apr 2023 15:32:58 GMT How the ColorMatrix node works in Nuke: read a 3x3 colour matrix row by row and build luminance, saturation, channel swaps, warm gain, sepia, Rec.709 to ACEScg and normals to camera space, ready to paste in Nuke. https://www.andreageremia.it/tutorial_color_panel.html https://www.andreageremia.it/tutorial_color_panel.html Thu, 13 Apr 2023 15:32:51 GMT Download a panel made in PySide, PySide2 and QtPy to customize the colors of nodes, backdrops and notes in Nuke, with a step by step explanation. https://www.andreageremia.it/tutorial_clock.html https://www.andreageremia.it/tutorial_clock.html Thu, 13 Apr 2023 15:32:46 GMT A free, fully customizable clock gizmo for Nuke based on the script frame rate: an example of a real working clock built in Nuke. https://www.andreageremia.it/tutorial_animation_nuke.html https://www.andreageremia.it/tutorial_animation_nuke.html Thu, 13 Apr 2023 15:32:41 GMT Tutorial for the Animation Curve gizmo for Nuke: wave generators and tools to modify animation curves and keyframes quickly. Available on Nukepedia. https://www.andreageremia.it/tutorial_3dobject.html https://www.andreageremia.it/tutorial_3dobject.html Thu, 13 Apr 2023 15:32:36 GMT A free collection of 3D meshes with clean UVs for Nuke, plus extra tools, born from daily 3D compositing work at Trixter.