RichieT
No longer a newbie, moving up!
- Joined
- Jul 19, 2013
- Messages
- 192
- Reaction score
- 68
- Location
- New York
- Can others edit my Photos
- Photos OK to edit
I just got the flashpoint 620m for Christmas (how did they know) and the instructions are a little sparse. My question is with guide numbers. My SB 800 has a similar full power GN, 184 vs 192. I'm curious if the GN's would also be similar as you reduce the power since there is the chart with the SB 800. I do have a light meter which is what I'm planning on using for most of my exposures. I also understand somewhat the inverse square rule. I'm curious, since the SB 800 is a smaller light source and the flash duration is different, if these factors will change the difference in GN's between the two flashes as output is decreased. Thanks for your help.