| gobo size | standard | Outside Diameter (Glass) | Outside Diameter (Steel) | Image Area (max) | |
|---|---|---|---|---|---|
| A size | standard | 100mm | 100mm | 75mm | |
| B size | standard | 86mm | 86mm | 64mm | |
| D size | standard | 53.3mm | 53.3mm | 40mm | |
| E size | standard | 37.5mm | 37.5mm | 28mm | |
| F size | standard | 41.5mm | 41.5mm | 28mm | |
| G size | standard | 66mm | 66mm | 45mm | |
| H size | standard | 52mm | 52mm | 32mm | |
| J size | standard | 38.8mm | 38.8mm | 25mm | |
| M size | standard | 66mm | 66mm | 48mm | |
| T size | standard | 46.05mm | 46.05mm | 38mm |