Table of Guide Numbers
| Wide¹ | 24mm | 28mm | 35mm | 50mm | 70mm | 85mm | 105mm | ||
| Built-In | K-01/K30 | ✗ | ✗ | 12 | ✗ | ✗ | ✗ | ✗ | ✗ |
| Built-In | K20D/K-5 | ✗ | ✗ | 13 | ✗ | ✗ | ✗ | ✗ | ✗ |
| Pentax | AF200FG | 15 | ✗ | 20 | ✗ | ✗ | ✗ | ✗ | ✗ |
| Tumax | DSL28AF² | ✗ | ✗ | ✗ | 22 | ✗ | ✗ | ✗ | ✗ |
| Metz | 24 AF-1 | ✗ | ✗ | ✗ | 24 | ✗ | ✗ | ✗ | ✗ |
| Promaster | 5250DX | ✗ | ✗ | 24 | ✗ | ✗ | ✗ | ✗ | ✗ |
| Tumax | DSL88AFZ³ | ✗ | ✗ | 20 | 24 | 30 | ✗ | 36 | ✗ |
| Pentax | AF360FGZ | 14 | 21 | 22 | 25 | 30 | 33 | 36 | ✗ |
| Tumax | DSL98AFZ⁴ | ✗ | ✗ | 23 | 28 | 35 | ✗ | 42 | ✗ |
| Promaster | 7200EDF | 20 | ✗ | 30 | ✗ | ✗ | ✗ | ✗ | ✗ |
| Promaster | 7400EDF | 13 | 20 | ✗ | 27 | 30 | ✗ | 34 | 37 |
| Metz | 44 AF-1 | 17 | 22 | 25 | 27 | 32 | 36 | 39 | 44 |
| Promaster | 7500EDF | 14 | 23 | 26 | 30 | 34 | 38 | 40 | 42 |
| Metz | 50 AF-1 | 18 | 24 | 26 | 29 | 36 | 39 | 45 | 50 |
| Metz | 52 AF-1 | 20 | 26 | 30 | 32 | 38 | 43 | 46 | 52 |
| Tumax | DPT3AFZ⁴ | ? | 32 | 34 | 38 | 41 | 43 | 45 | ✗ |
| Tumax | DPT5AFZ⁴ | ? | 35 | 37 | 40 | 43 | 46 | 48 | 50 |
| Metz | 58 AF-2 | 20⁶ | 29 | 31 | 35 | 42 | 46 | 52 | 58 |
| Pentax | AF540FGZ | 21 | 32 | 35 | 39 | 45 | 50 | 54 | ✗ |
| Sigma | EF-610 DG⁵ | ? | 34 | 35 | 36 | 46 | 52 | 56 | 61 |
✗ indicates that this flash does not have this zoom step.
1 With built-in or included wide-angle diffuser.
2 Names include Tumax DSL283AF, DSL286AF, and DSL288AF; and Vivitar DF-183. The Metz 24 AF-1 is also related, but is listed with a slightly higher guide number.
3 And other variants, like the Metz 36 AF-5.
4 There are many variants of this flash on the market, some with slightly differing stated guide numbers. See table of OEM labels.
5 Both Super and ST models.
6 The 58 AF-2's wide-angle panel is more diffuse than that of the 58 AF-1, covering 12mm instead of 18mm (a whole 23° wider).
