Graflex.org Forum Index Graflex.org
Get help with your Graflex questions here
 
 FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   RegisterRegister 
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 

graflite unit

 
Post new topic   Reply to topic    Graflex.org Forum Index -> Flash Help
View previous topic :: View next topic  
Author Message
sobahguy



Joined: 09 Oct 2001
Posts: 173
Location: Massachusetts

PostPosted: Thu Jan 10, 2002 6:16 pm    Post subject: Reply with quote

hi...i have just gotten a graflite 3-cell unit #2773 with 5" & 7" reflectors & have a question about the difference between press 40 & #5 bulbs. i know about the difference with the base & size of the bulbs. my question is more towards practical in-use regarding the strength of the bulbs and if there is anything different required in determining correct aperture & shutter speed. or do i just rely on the guide#'s of the bulbs? in what lighting situations would each of these bulbs be more/less appropriate? i'm assuming the 40's are brighter bulbs for lower-light scenarios. is this correct? any help is appreciated. thanks,george c.

[ This Message was edited by: sobahguy on 2002-01-10 10:19 ]

[ This Message was edited by: sobahguy on 2002-01-10 10:20 ]
Back to top
View user's profile Send private message
jdman



Joined: 13 May 2001
Posts: 302
Location: Midwest

PostPosted: Fri Jan 11, 2002 5:05 am    Post subject: Reply with quote

From info in the main part of this site. The press 40 and #5 have about the same guide number. Example 1/200 sec ASA 100 the press 40 guide number is 160 with a 7 inch reflector. For the #5 same setting using the 5 inch polished reflector the guide # would be 190. The 7 inch reflector will have wider coverage. This means that at 10 feet you would set your Iris to F-16 for the press 40 and stop down just a little more for the #5.Russ
Back to top
View user's profile Send private message Send e-mail
Display posts from previous:   
Post new topic   Reply to topic    Graflex.org Forum Index -> Flash Help All times are GMT
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum


Powered by phpBB © 2001, 2005 phpBB Group