Choosing the correct gobo size is critical for clean projection, sharp focus and safe operation of your lighting fixture. This page is a practical gobo size chart for lighting designers, theatres, venues, hire companies and AV technicians across Australia & New Zealand.

Use this guide to match your fixture (for example, ETC Source Four, Selecon Pacific, Chauvet Intimidator Spot 475ZX, Chauvet Gobo Zoom 2, Ljusdesign Neo Framer, Showtec Performer Profile 150 Q6, Robe ColourSpot, Martin MAC, etc.) to the correct gobo diameter and image area, and then order a Rosco custom gobo cut precisely to size from Creative Film & Theatre Solutions (CFATS).

How to use this gobo size chart

1. Find your fixture brand and model. Scroll to the brand section (for example, Chauvet, ETC, Selecon, Martin, Robe, Showtec, Neo Framer) and locate your specific model.
2. Note the outside diameter and image area. The Outside Diameter is the physical size of the gobo blank (glass or steel). The Max Image Area is the largest usable image that will project cleanly.
3. Choose material: Rosco steel or glass gobo. Use steel gobos for simple breakups and patterns; use glass gobos for logos, multi-colour artwork, gradients or photographic detail.
4. Order your Rosco custom gobo from CFATS. Once you know the size, you can order directly online at cfats.com.au – Rosco Custom Gobo or email sales@cfats.com.au with your artwork and fixture details.

Jump to Brand / Fixture Family

Click a brand or family below to jump to its gobo size table:

• Standard A / B / E / M gobo sizes
• ADJ
• Chauvet DJ (Gobo Zoom 2, Intimidator Spot 475ZX)
• Clay Paky Alpha / Stage / Miniscan
• Coemar
• ETC Source Four
• Futurelight / Servospot
• Gantom / Genie
• Griven
• High End Systems
• iLED / Image / Opti
• Martin MAC / Mania
• Ljusdesign Neo Framer
• Pearl River
• Prolite / Prolite Profile
• Robe ColourSpot / ClubSpot / Robin
• Robert Juliat
• Selecon Aureol / Accent / Pacific / Arena
• SGM Giotto / Victory
• Showtec Performer Profile Q6
• Strand
• Studio Due Shark

Standard Gobo Sizes (Lettered)

Many fixtures use “standard” letter sizes. Always confirm against your fixture manual, but these common sizes are a good starting point when specifying gobos.

Standard Size	Outside Diameter	Max Image Diameter	Typical Use / Notes
A Size	100 mm	75 mm	Larger profiles / many 1–2 kW fixtures, some Selecon & Robert Juliat
B Size	86 mm	64 mm	Common for ETC Source Four, many profile spots
D Size	53.3 mm	40 mm	Smaller projectors and scanners
E Size	37.5 mm	28 mm	Compact profile fixtures & smaller projectors
G Size	≈ 66 mm	≈ 45–48 mm	Some Clay Paky and specialty fixtures
J Size	38.8 mm	25 mm	Smaller projectors
M Size	66 mm	48 mm	Used in many compact profiles (e.g. some Showtec, ETC Jr)
T Size	46.05 mm	38 mm	Various compact fixtures
V Size	22.5 mm	≈ 17–22 mm	Very small scanners / moving heads

Measurements are approximate and may vary slightly between manufacturers. Always confirm with your fixture’s documentation if you are unsure, or contact CFATS for help.

Gobo Sizes by Fixture Make & Model

The tables below list common fixtures used in theatres, events and installations in Australia and New Zealand. If your exact light isn’t listed, CFATS can still manufacture the correct Rosco custom gobo – just tell us the make, model and gobo size.

ADJ (American DJ)

Make / Model	Outside Diameter (Glass)	Outside Diameter (Steel)	Max Image Area	Notes
ADJ Gobo Projector LED	26.8 mm	26.8 mm	24 mm	Small logo projector
ADJ Pro 150	88 mm	88 mm	38 mm	Large-format projector
ADJ Rotogobo	26 mm	26 mm	20 mm	Rotating gobo effect
ADJ Scrambler	37.5 mm	37.5 mm	28 mm	E-size style

Chauvet DJ – Gobo Projectors & Moving Heads

Make / Model	Outside Diameter	Max Image Area	Typical Gobo Size	Notes
Chauvet GoboZoom LED 2.0	28.6 mm	26 mm	Custom small glass/metal gobo	Compact LED gobo projector
Chauvet Gobo Zoom 2	≈ 37.3–37.5 mm	22 mm	E-Size style (E 37.5 / 22 mm)	High-powered custom gobo projector with zoom
Chauvet LFS-5	25–25.2 mm	19 mm	Small custom gobo	Profile-style LED projector
Chauvet Intimidator Spot 475ZX	25.7 mm	21 mm	Custom round gobo	250 W LED moving head, max thickness ≈ 1.3 mm

Clay Paky – Alpha / Stage / Miniscan

Model	Outside Diameter (Glass)	Outside Diameter (Steel)	Max Image Area	Wheel / Notes
Alpha Spot 575 – Rotating wheel	37.5 mm	37.5 mm	25.5 mm	Rotating gobos
Alpha Spot 575 – Effect wheel	28 mm	28 mm	25.5 mm	Effect wheel
Alpha Spot 1200 – Fixed wheel	31.5 mm	31.5 mm	25 mm	Static gobos
Alpha Spot 1200 – Rotating wheel	37.5 mm	37.5 mm	25.5 mm	Rotating gobos
Alpha Spot 1500 / Alpha Profile 1500 – Rotating	37.5 mm	37.5 mm	25 mm	Rotating gobos
Alpha Spot 1500 / Alpha Profile 1500 – Fixed	31.5 mm	31.5 mm	23 mm	Static gobos
Miniscan HPE	25.5 mm	25.5 mm	20 mm	Scanner
Stage Light 300	25.5 mm	25.5 mm	23 mm	Profile spot
Stage Zoom 1200 / Stage Scan 1200	51.8 mm	66 mm	48 mm	Larger G-size style gobos

Coemar

Model	Outside Diameter (Glass)	Outside Diameter (Steel)	Max Image Area
Coemar CF7	26 mm	26 mm	19 mm
Coemar Clubscan	32.9 mm	32.9 mm	28 mm
Coemar iSpot 150 / 575	32.9 mm	32.9 mm	≈ 26–28 mm
Coemar iSpot 1200	32.9 mm	32.9 mm	24 mm

ETC – Source Four Family

Model	Gobo Size	Outside Diameter	Max Image Area	Notes
Source Four – 5° / 10° / 19° / 26° / 36°	B Size	86 mm	64.5 mm	Standard B-size metal or glass
Source Four – 50°	A Size	100 mm	≈ 70 mm	Uses A-size for larger field
Source Four Jr	M Size	66 mm	49.5 mm	Compact profile, M-size gobos
Source Four Revolution (Profile head)	M Style	66 mm	48 mm	Motorised profile head

Futurelight & Servospot

Model	Outside Diameter	Max Image Area	Notes
Futurelight MH660 / Servospot 250	≈ 26.5 mm	≈ 23 mm	Rotating gobos
Futurelight MH840 / MH860	≈ 26.5 mm	≈ 23 mm	Spot moving heads
Futurelight PS/D-200 Promotion Scan	53.3 mm	40 mm	D-size pattern area

Gantom / Genie Logo Projectors

Model	Outside Diameter	Max Image Area	Notes
Gantom iQ (Darklight GT-GB1)	19 mm	15 mm	Ultra-compact IP65 logo projector
Genie Shiva 250 / 350	25.4 mm	18 mm	Small moving head / scanner
Genie Mojo Rotogobo	25 mm	18 mm	Rotating logo gobo unit

Griven

Model	Outside Diameter	Max Image Area
Gobo Clip / GoboStorm	53.3 mm	≈ 42 mm
ProMotion 1200 / 2000 (moving head)	53.3 mm	40 mm

High End Systems

Model	Outside Diameter	Max Image Area	Notes
Cyberlight	≈ 44 mm	≈ 36 mm	Scanner-style fixture
Intellabeam	≈ 29 mm	≈ 18–22 mm	Classic scanner
Show Gun	64.9 mm	53.3 mm	Large format effects head
Trackspot / Trackspot Bolt	25 mm	≈ 22 mm	Compact scanner
Studio Spot 250	25 mm	20 mm	Moving head spot
Studio Spot 575 / X-Spot	36.3 mm	31.5 mm	Medium moving head

iLED / Image / Opti

Model	Outside Diameter	Max Image Area
iLED LEDSpot 1000 / 2000 (rotating)	25.95 mm	19 mm
iLED LED Spot 2000 (fixed)	28.95 mm	22 mm
iLED LED Spot 4000	32.75 mm	24 mm
Opti K2 / K4	50 mm	≈ 35 mm usable
Opti Gobo Show F2	50 mm	≈ 35 mm usable

Martin – MAC & Mania Series

Model	Outside Diameter	Max Image Area	Notes
MAC 250 / 250+	22.5 mm	17 mm	Compact moving head
MAC 250 Krypton / 250 Entour	22.5 mm	17 mm	Same gobo size as MAC 250
MAC 350 Entour	27.8 mm	23 mm	Medium moving head
MAC 500 / 550 / 575 Krypton / 700	27.8 mm	23 mm	Common touring workhorses
MAC 2000 / MAC III / MAC Viper	37.5 mm	≈ 27–30 mm	Larger pattern area
Mania PR1 / Imagescan / Imager	53.3 mm	40 mm	D-size–style projector gobos
Mania SCX600 / SCX700	22.5 mm	17 mm	Scanner fixtures
MiniMAC Profile / Maestro	22.5–37.5 mm	≈ 17–30 mm	Compact MAC family

Ljusdesign Neo Framer (Narrow & Wide)

Neo Framer fixtures from Ljusdesign (often specified in galleries and museums) use an E-size gobo holder.

Model	Gobo Size	Outside Diameter	Notes
Neo Framer Narrow	E Size	37.5 mm	Uses an E-size gobo holder; suitable for soft breakups and textures
Neo Framer Wide	E Size	37.5 mm	Wide-angle profile with E-size gobos

Pearl River

Model	Outside Diameter	Max Image Area
Pilot 150 (new model)	26.9 mm	22 mm
Pilot 250	27.8 mm	23 mm
PR-XL250 / PR-XS250	22.5 mm	17 mm
PR-XL575 / PR-XL700	36.3 mm	31 mm

Prolite

Model	Gobo Size	Outside Diameter	Max Image Area
Prolite Metal Halide 150W Profile	B Size	86 mm	≈ 65 mm

Robe – ClubSpot / ColourSpot / Robin

Model	Outside Diameter	Max Image Area	Notes
Clubspot 150CT	22.5 mm	≈ 17–19 mm	Small club spot (contact CFATS to confirm image area)
Clubspot 160CT / 250CT / 300CT / 500CT	26.8 mm	22 mm	Club series spots
Spot 150XT / 160XT / 250XT	26.8 mm	≈ 22–22.5 mm	Compact moving heads
ColourSpot 170AT / 250AT / 575AT / 700AT	26.8 mm	22 mm	Very common Robe spot heads
ColourSpot 1200AT	≈ 37.5 mm	31 mm	Large format spot
ColourSpot 2500AT	37.5 mm	31.5 mm	High-power spot
Robin DLX / MMX / 600E Spot / 300 Plasma	26.8 mm	≈ 22–22.5 mm	Current Robin family spots

Robert Juliat

Model / Family	Gobo Size	Outside Diameter	Max Image Area
2.5k HMI Profiles	A Size	100 mm	≈ 58–75 mm (depending on optics)
D’Artagnan 900SNX 2500W	A Size	100 mm	≈ 58–75 mm

Selecon – Aureol / Accent / Pacific / Arena

Model	Gobo Size	Outside Diameter	Max Image Area
Aureol Beamshaper / Aureol	E Size	37.5 mm	28 mm
Accent (Architectural)	E Size (28 mm aperture)	37.5 mm	24 mm
Pacific 5.5–13° / 12–28° Zoom	M Size	66 mm	≈ 48–59 mm
Pacific 14–35° Zoom	B Size	86 mm	≈ 59–64 mm
Pacific 23–50° / Fixed beams / Arena range	A Size	100 mm	≈ 59 mm
Display Profile (12V / CDM)	E Size	37.5 mm	28 mm

SGM – Giotto, Victory & Galileo

Model	Outside Diameter	Max Image Area
Giotto Spot 250 / 400 (yoke)	28 mm (in 30 mm recess)	≈ 23–24 mm
Giotto Spot 1200	42.9 mm (in ring ≈ 49 mm)	40 mm
Victory 2	≈ 33 mm	30 mm

Showtec Performer Profile 150 Q6 / 700 Q6

Showtec Performer Profile fixtures use industry standard M-size gobos via dedicated gobo holders.

Model	Gobo Size	Outside Diameter	Max Image Area	Notes
Showtec Performer Profile Zoom 150 Q6	M Size	66 mm (holder ~60 mm)	≈ 48 mm	150 W RGBACL profile, M-size metal or glass
Showtec Performer Profile 600 / 650 / 700 Q6	M Size	66 mm	≈ 48 mm	Performer Profile gobo holder compatible with M-size gobos

Strand

Model / Family	Gobo Size	Notes
Cadenza / Arena Zoomspot	A Size	Large theatre profiles
Cantata / Prelude / P23	B Size	Common Strand profiles
Optique (with holder)	M Size	Uses M-size style gobos

Studio Due – Shark Series

Model	Outside Diameter	Max Image Area
Shark 150	24 mm	19 mm
Shark 250 (Italian version)	23.7 mm	19 mm
Shark 250 (Chinese version)	27.3 mm	19 mm

This guide focuses on the most common fixtures we see in Australia & New Zealand. There are many more legacy and niche fixtures on the market; if yours isn’t listed, CFATS can still supply the correct Rosco custom gobo once we confirm your exact size.

Quick recap: from size chart to finished gobo

• 1. Find your fixture brand and model. Scroll to the brand section and locate your specific model to get the correct outside diameter and image area.
• 2. Confirm the dimensions. Double-check against your fixture manual if you are unsure, or send CFATS a photo of the gobo holder.
• 3. Choose Rosco steel or glass. Steel for simple patterns and breakups; glass for logos, gradients, fine detail and full-colour artwork.
• 4. Order through CFATS. Use our Rosco Custom Gobo product page or email us your artwork and fixture details – we’ll handle the rest.

Need a custom size or help with a fixture not listed?

Even if your projector or moving head isn’t listed here, CFATS can usually supply a matching Rosco custom gobo – cut to any diameter, in steel or glass, for almost any gobo holder or wheel. If you’re in doubt:

• Send us the fixture make & model (e.g. “Chauvet Intimidator Spot 475ZX”, “Showtec Performer Profile Zoom 150 Q6”).
• Attach a photo of the gobo holder or your existing gobo (if you have one).
• Tell us whether you prefer steel or glass, and if it’s for a logo, pattern or full-colour artwork.

We’ll confirm the size and send you a quote for a Rosco custom gobo that will fit your light and your application.