Approve the Cookies
This website uses cookies to improve your user experience. By using this site, you agree to our use of cookies and our Privacy Policy.
OK
Index  •   • New posts  •   • RTAT  •   • 'Best of'  •   • Gallery  •   • Gear  •   • Reviews
Guest
New posts  •   • RTAT  •   • 'Best of'  •   • Gallery  •   • Gear  •   • Reviews
Register to forums    Log in

 
FORUMS General Gear Talk Flash and Studio Lighting 
Thread started 28 Mar 2008 (Friday) 15:57
Search threadPrev/next
sponsored links
(this ad will go away when you log in as a registered member)

Norman/Lumedyne Flash heads Guide Numbers

 
Zansho
"I'd kill for a hot pink 40D"
Avatar
2,547 posts
Gallery: 9 photos
Likes: 781
Joined Feb 2008
Location: Austin, Tx
     
Mar 28, 2008 15:57 |  #1

A good friend, mentor, and someone I look up to as a photographer and person, H. Lynn Jones recently sent me some data regarding the Norman Flash heads as I have one at home, and was curious about their power output. Lynn was kind enough to provide me with the info, and I'd thought I'd share with you.


The first table is with the Norman/Lumedyne with the 60 degree reflector attached to the head.

ISO
50
100
200
400
800
1600
3200
400 WS
160
220
320
450
640
900
1280
200 WS
110
160
220
320
450
640
900
100 WS
80
110
160
220
320
450
640
50 WS
56
80
110
160
220
320
450
25 WS
40
56
80
110
160
220
320



The last table is with the flash and NO reflector attached to the head, bare bulb. I rather like this one for outdoors as it creates nice catchlights in the eyes and does a great job of fill flash without being too obtrusive.

ISO
50
100
200
400
800
1600
3200
400 WS
56
80
110
160
220
320
450
200 WS
40
56
80
110
160
220
320
100 WS
28
40
56
80
110
160
220
50 WS
20
28
40
56
80
110
160
25 WS
14
20
28
40
56
80
110



All of this information was courtesy of H. Lynn Jones from Austin Community College's Photographic Technology Department. I've tested them out, and they're quite useful for helping me determine just how far or how much power I need to use to get the desired lighting effects using my Norman. If anyone is curious, a used Norman flash can be had for anywhere around 300-400 with a battery pack - really nice to have for a strobist setup and can also be used with umbrellas. The only drawback is they're not as portable as the flashguns, but they're easier to handle than a full studio setup with power packs.


In case anyone doesn't know, determining how much power/distance you need is a simple matter of doing some math -

Distance = GN divided by Aperture
Aperture = GN divided by Distance

Using that information, you can determine where you want your flash placed and just how much power you need to get the desired effect.

The second table is with a 15 degree Telephoto reflector (used with supplied spacer for the reflector disc)

ISO
50
100
200
400
800
1600
3200
400 WS
450
640
900
1280
1800
2560
3600
200 WS
320
450
640
900
1280
1800
2560
100 WS
220
320
450
640
900
1280
1800
50 WS
160
220
320
450
640
900
1280
25 WS
110
160
220
320
450
640
900


http://www.michaeljsam​aripa.com (external link) creating beautiful images for myself, my clients, and the world. Shooting with a mix of Canon, Fuji, and Sony.

  
  LOG IN TO REPLY
Wilt
Reader's Digest Condensed version of War and Peace [POTN Vol 1]
Avatar
43,186 posts
Gallery: 1 photo
Likes: 3039
Joined Aug 2005
Location: Belmont, CA
     
Mar 28, 2008 16:19 |  #2

If you have Excel, load the data into that; then do a screen capture of the Excel window and paste that into Paint; then output a JPG of that, to retain appearance as a table!


You need to give me OK to edit your image and repost! Keep POTN alive and well with member support https://photography-on-the.net/forum/donate.p​hp
Canon dSLR system, Olympus OM 35mm system, Bronica ETRSi 645 system, Horseman LS 4x5 system, Metz flashes, Dynalite studio lighting, and too many accessories to mention

  
  LOG IN TO REPLY
sponsored links
(this ad will go away when you log in as a registered member)

2,448 views & 0 likes for this thread
Norman/Lumedyne Flash heads Guide Numbers
FORUMS General Gear Talk Flash and Studio Lighting 
AAA
x 1600
y 1600

Jump to forum...   •  Rules   •  Index   •  New posts   •  RTAT   •  'Best of'   •  Gallery   •  Gear   •  Reviews   •  Member list   •  Polls   •  Image rules   •  Search   •  Password reset

Not a member yet?
Register to forums
Registered members may log in to forums and access all the features: full search, image upload, follow forums, own gear list and ratings, likes, more forums, private messaging, thread follow, notifications, own gallery, all settings, view hosted photos, own reviews, see more and do more... and all is free. Don't be a stranger - register now and start posting!


COOKIES DISCLAIMER: This website uses cookies to improve your user experience. By using this site, you agree to our use of cookies and to our privacy policy.
Privacy policy and cookie usage info.


POWERED BY AMASS forum software 2.1forum software
version 2.1 /
code and design
by Pekka Saarinen ©
for photography-on-the.net

Latest registered member is leeloming
843 guests, 253 members online
Simultaneous users record so far is 15144, that happened on Nov 22, 2018

Photography-on-the.net Digital Photography Forums is the website for photographers and all who love great photos, camera and post processing techniques, gear talk, discussion and sharing. Professionals, hobbyists, newbies and those who don't even own a camera -- all are welcome regardless of skill, favourite brand, gear, gender or age. Registering and usage is free.