What The Hell, new flash selling at $200++? is it true? nikon flash...

[westwest1]

Ya lor... Happened to notice the Nikon SB-80DX... Wonder if it is good... :think: Or maybe stick to SB-600...

According to Nikon.com.sg
SB-800: $800
SB-80DX: $650
SB-600: $440

you need a SU-800...

 

[Youhong]

you need a SU-800...

I think SU-800 is a waste of money... It's just a commander right? D70s don't need that unless using I need to use different channels and/or groups... Even then, SB-800 will do the job... Then the rest maybe use SB-600... just that they don't come with a diffusion dome...

 

[Artosoft]

... from what i read, seems like it can reach as far as 21 meters leh.

You might need ASA1600 at biggest aperture to do that :sweat: .

Regards,
Arto.

 

[azul123]

You might need ASA1600 at biggest aperture to do that :sweat: .

Regards,
Arto.

Specs say, 30m at ISO200 and 21m at ISO100.

../azul123

 

[Artosoft]

Specs say, 30m at ISO200 and 21m at ISO100.

../azul123

That's GN number.

If you set your camera to ISO200, the GN is 30m. Meaning for distance 1m, you can use Aperture f/30 (aperture = GN / distance ==> Aperture = 30 / 1m = f/30).

For distance 21m, you need aperture 30/21m = aperture ~f/1.4, or at ASA1600 = aperture ~f/4.

Yah, not necessary using ASA1600 if you have f/1.4 lens .

Regards,
Arto.

 

[azul123]

Oops, yes that's GN.

So, if the formula is, f/stop (aperture) = guide number (GN) x ISO sensitivity factor ÷ Shooting distance (m/ft).

F = 21 (GN) x 1 (ISO 100) ÷ 6m

That's F3.5 aperture, for 6m range. Still useful for many cases, of course up ISO for further ranges.

../azul123

 

[azul123]

Nikon is good for ISO800 (sensitivity x2.8).

That will be F = 21 (GN) x 2.8 (ISO 800) ÷ 21m

= F2.8 aperture, good for use on F2.8 and faster aperture lenses. :thumbsup:

Wow, it's looking better and better. Must get it liow.

../azul123