Uploaded August 2026 | Updated September 2026, 3 weeks ago
A real lens does everything at once, dispersion, coma and astigmatism all in the same instant. You can't ray trace that in a comp, so Glass approximates it, and every approximation is built on published optics papers. Shown against a board of real lens references so you can judge how close it gets.
🎟️ 25% off Glass while the code lasts https://cglounge.studio/assets/glass?coupon=GLASS2LENS25
• Chromatic aberration | RGB offset, from a subtle fringe to a full split, with centre falloff and per-channel bias
• Spherical aberration | a warmth close to halation, plus colour splits that blur one channel more than another
• Coma | the word comes from comet: a hot centre with a tail smeared toward the frame edge
• Astigmatism | round in the centre, stretched hard at the edges
• Off-axis bump and anamorphic stretch | the plate-matching controls
• Prism rainbow and highlight bloom on the Creative tab
Lenses don't want these characteristics. They have them anyway, because of physics.
Part of the Glass LensKit series. Also in Glass LE for Nuke Indie.
🎥 TIMESTAMPS
0:00 Lens Aberrations
0:41 Matching Real-Lens References
1:11 Chromatic Aberration
1:31 Smoothness & Centre Falloff
1:55 Bias, Quality & Fringe Colour
2:44 Spherical Aberration
3:07 Spherical Colour Splits
3:49 Coma
4:52 Astigmatism
5:39 Off-Axis Bump
6:18 Anamorphic Stretch
6:31 Creative: Prism Rainbow
7:00 Highlight Bloom
7:35 Checker Diagnostic View
7:53 On Real Renders
9:09 Aberration + Defocus
📂 GET GLASS
▶ https://cglounge.studio/assets/glass?coupon=GLASS2LENS25
Full edition plus Glass LE for Nuke Indie. Docs are linked inside every node.
📺 THE SERIES
Glass 2.0 — full tour: youtube.com/watch?v=7hrTgNED2fs
Glass 1.0: youtube.com/watch?v=zKB1sfPCRLk
Distortion: youtube.com/watch?v=YfXQWLAiOtE
Defocus & bokeh: youtube.com/watch?v=78QsO2C45uc
👥 CG Lounge Discord: discord.gg/z35NUgV — there's a dedicated Glass channel in there.
❤️ If this helped, LIKE and SUBSCRIBE.
instagram.com/arvidschneider
twitter.com/arvidurs
🎵 Epidemic Sound: epidemicsound.com/referral/7cfjxk
#Nuke #VFX #Compositing #Foundry #ChromaticAberration #Coma #Astigmatism #CGI #VFXTools
Arvid Schneider | VFX Artist & Houdini Educator | Crafting next-level visuals. Let's level up together! 💥
A real lens does everything at once, dispersion, coma and astigmatism all in the same instant. You can't ray trace that in a comp, so Glass approximates it, and every approximation is built on published optics papers. Shown against a board of real lens references so you can judge how close it gets.
🎟️ 25% off Glass while the code lasts https://cglounge.studio/assets/glass?coupon=GLASS2LENS25
• Chromatic aberration | RGB offset, from a subtle fringe to a full split, with centre falloff and per-channel bias
• Spherical aberration | a warmth close to halation, plus colour splits that blur one channel more than another
• Coma | the word comes from comet: a hot centre with a tail smeared toward the frame edge
• Astigmatism | round in the centre, stretched hard at the edges
• Off-axis bump and anamorphic stretch | the plate-matching controls
• Prism rainbow and highlight bloom on the Creative tab
Lenses don't want these characteristics. They have them anyway, because of physics.
Part of the Glass LensKit series. Also in Glass LE for Nuke Indie.
🎥 TIMESTAMPS
0:00 Lens Aberrations
0:41 Matching Real-Lens References
1:11 Chromatic Aberration
1:31 Smoothness & Centre Falloff
1:55 Bias, Quality & Fringe Colour
2:44 Spherical Aberration
3:07 Spherical Colour Splits
3:49 Coma
4:52 Astigmatism
5:39 Off-Axis Bump
6:18 Anamorphic Stretch
6:31 Creative: Prism Rainbow
7:00 Highlight Bloom
7:35 Checker Diagnostic View
7:53 On Real Renders
9:09 Aberration + Defocus
📂 GET GLASS
▶ https://cglounge.studio/assets/glass?coupon=GLASS2LENS25
Full edition plus Glass LE for Nuke Indie. Docs are linked inside every node.
📺 THE SERIES
Glass 2.0 — full tour: youtube.com/watch?v=7hrTgNED2fs
Glass 1.0: youtube.com/watch?v=zKB1sfPCRLk
Distortion: youtube.com/watch?v=YfXQWLAiOtE
Defocus & bokeh: youtube.com/watch?v=78QsO2C45uc
👥 CG Lounge Discord: discord.gg/z35NUgV — there's a dedicated Glass channel in there.
❤️ If this helped, LIKE and SUBSCRIBE.
instagram.com/arvidschneider
twitter.com/arvidurs
🎵 Epidemic Sound: epidemicsound.com/referral/7cfjxk
#Nuke #VFX #Compositing #Foundry #ChromaticAberration #Coma #Astigmatism #CGI #VFXTools
Arvid Schneider | VFX Artist & Houdini Educator | Crafting next-level visuals. Let's level up together! 💥
