EEVEE & Cycles

RedLight works in both render engines. Two features need Cycles, and EEVEE has one setting worth knowing about.

Feature	EEVEE	Cycles
All 60 studio kits	Yes	Yes
Projection kits (pattern masks)	Yes	Yes
Backdrops, shadow-catcher floor	Yes	Yes
Cameras, HDRI	Yes	Yes
Gobo images	No	Yes
IES profiles	No	Yes

Gobo images and IES profiles rely on light textures, which EEVEE does not support. That is a Blender limitation. The panel warns you when the engine is not Cycles.

Missing shadows in EEVEE

Kits with many lights, such as Ring Catchlight (12 lights), can fill EEVEE's shadow memory. EEVEE then drops shadows without an error in the interface; the console prints Shadow buffer full.

Fix: Render Properties > Shadows > Pool Size, raise it to 1024 MB.

Looks differ slightly between engines

Cycles traces bounced light, so a brightly lit floor lifts the walls around it. EEVEE approximates this, so the same kit can look a little darker in the shadows. Turning on Render Properties > Raytracing in EEVEE brings the two closer.