the tech hoo-ha about flashes ?? and with 717..

sequitur · 23rd June 2003

hey guys..

yeah what's all the guide number and all that ?

i know the metz 32 mz-3 or whatever is really compatible with sony 717.. is it good ? anybody can vouch for it's goodness ?

just wondering.. if it says 32 guide number.. does that mean if i shoot on ISO 100 it'll illuminate 32 meters ?! i need a flash that can handle at least 20m... all the time.

Tweek · 23rd June 2003

guide number = max flash distance x aperture fstop,

with a specific ISO (usually 100) and focal length (for zoom head)

So with a flash of GN32 (metres), the flash can reach 16m if you use F2.0 on your 717.

sequitur · 23rd June 2003

huh ? ?
what ?

wait wait
GN of 32..

then..
32 times what ?
32 times 1/2 ?

then if f/stop is 5.6,

32 times 1/5.6 ?

Tweek · 23rd June 2003

put it simply...

max flash distance = GN / aperture Fstop

is this clearer?

majere2sg · 23rd June 2003

Quote:

Originally posted by sequitur
huh ? ?
what ?

wait wait
GN of 32..

then..
32 times what ?
32 times 1/2 ?

then if f/stop is 5.6,

32 times 1/5.6 ?

Think should be GN 32 / F5.6 = distance illuminated (ISO 100?)

Maybe can refer to this website

http://www.minoxlab.com/dk051597/dkflash.htm

sequitur · 23rd June 2003

okay yes it's GN divided by distance = fstop

or GN divided by fstop = distance

and if you use ISO 400 instead of ISO 100 you'll get two times the distance illuminated

right ?

sequitur · 23rd June 2003

oh yeah...

which metz flashes are actually compatible with the sony 717 ?

is it all ? or just specific models ?

(of course must use with the SCA whatever adaptor..)

what about sunpak ring flash ah.. thinking of ordering one...

metz : http://www.metz.de/1_metz_2000/m_pag...name=mecablitz

and

sunpak :

http://www.sunpak.com/flash/dx.html

Tweek · 23rd June 2003

Quote:

Originally posted by sequitur
and if you use ISO 400 instead of ISO 100 you'll get two times the distance illuminated

right ?

theoretically yes.

sequitur · 23rd June 2003

maj... your metz 32mz3 you sell liao ah ? compare to sony 32x how ? which one better ?

i'm encouraged by the swivel bounce lah.. :P

majere2sg · 23rd June 2003

Quote:

Originally posted by sequitur
maj... your metz 32mz3 you sell liao ah ? compare to sony 32x how ? which one better ?

i'm encouraged by the swivel bounce lah.. :P

Haven't sell but maybe not selling already. I not sure which is better because I am a flash idiot

I still figuring out how to make full use of my two flash units. I rarely took pictures with flash though but going to try out the two of them when I get the chance the next time when I go outdoors for shooting practice.

sequitur · 23rd June 2003

okay.. how much is metz and sca new ?

dunno.. if you wanna sell tell me coz i wanna buy a flash but i still scouting for a suitable one

majere2sg · 23rd June 2003

Quote:

Originally posted by sequitur
okay.. how much is metz and sca new ?

dunno.. if you wanna sell tell me coz i wanna buy a flash but i still scouting for a suitable one

which metz ? I heard the metz 32mz-3 is selling above $200 and the sca above $100, so should be around $300++ for both of them ?

sequitur · 23rd June 2003

yes 32mz3
the flash you have

chronos · 24th June 2003

IIRC, metz 32z series are quite popular with Sony users
z1 being the cheapest but not able to use the SCA adaptor for Sony cams
but general consensus is that the adaptor doesn't seem to have much of an effect.
personally, i am using the metz 32z-m2 with omnibounce on my 717
effects are quite good during my coverage for my friend's wedding
but i should seriously get down to making a bounce card...
reviews on the sony f32x flash isn't that encouraging either...
so i guess the metz would suffice...

23rd June 2003	#1
sequitur Senior Member Join Date: Apr 2003 Posts: 2,829	the tech hoo-ha about flashes ?? and with 717.. hey guys.. yeah what's all the guide number and all that ? i know the metz 32 mz-3 or whatever is really compatible with sony 717.. is it good ? anybody can vouch for it's goodness ? just wondering.. if it says 32 guide number.. does that mean if i shoot on ISO 100 it'll illuminate 32 meters ?! i need a flash that can handle at least 20m... all the time. __________________ my flickr.

23rd June 2003	#3
sequitur Senior Member Join Date: Apr 2003 Posts: 2,829	huh ? ? what ? wait wait GN of 32.. then.. 32 times what ? 32 times 1/2 ? then if f/stop is 5.6, 32 times 1/5.6 ? __________________ my flickr.

23rd June 2003	#6
sequitur Senior Member Join Date: Apr 2003 Posts: 2,829	okay yes it's GN divided by distance = fstop or GN divided by fstop = distance and if you use ISO 400 instead of ISO 100 you'll get two times the distance illuminated right ? __________________ my flickr.

23rd June 2003	#7
sequitur Senior Member Join Date: Apr 2003 Posts: 2,829	oh yeah... which metz flashes are actually compatible with the sony 717 ? is it all ? or just specific models ? (of course must use with the SCA whatever adaptor..) what about sunpak ring flash ah.. thinking of ordering one... metz : http://www.metz.de/1_metz_2000/m_pag...name=mecablitz and sunpak : http://www.sunpak.com/flash/dx.html __________________ my flickr.

23rd June 2003	#9
sequitur Senior Member Join Date: Apr 2003 Posts: 2,829	maj... your metz 32mz3 you sell liao ah ? compare to sony 32x how ? which one better ? i'm encouraged by the swivel bounce lah.. :P __________________ my flickr.

23rd June 2003	#2
Tweek Senior Member Join Date: Jan 2002 Location: East Posts: 2,149	guide number = max flash distance x aperture fstop, with a specific ISO (usually 100) and focal length (for zoom head) So with a flash of GN32 (metres), the flash can reach 16m if you use F2.0 on your 717.

23rd June 2003	#13
sequitur Senior Member Join Date: Apr 2003 Posts: 2,829	yes 32mz3 the flash you have __________________ my flickr.

24th June 2003	#14
chronos New Member Join Date: Sep 2002 Location: Tanjong Pagar Posts: 32	IIRC, metz 32z series are quite popular with Sony users z1 being the cheapest but not able to use the SCA adaptor for Sony cams but general consensus is that the adaptor doesn't seem to have much of an effect. personally, i am using the metz 32z-m2 with omnibounce on my 717 effects are quite good during my coverage for my friend's wedding but i should seriously get down to making a bounce card... reviews on the sony f32x flash isn't that encouraging either... so i guess the metz would suffice...