calumet genesis question for tetrode and slivr

[seanmsulli]

I think it was one of you guys was the one who did all the testing on the Genesis lights. I know you guys found that the light controls are not linear. However, as you also found that they were very consistant, could you safely give numbers for the stops. For example if 60 is full power, what is one stop down (47? 48?) 2 stops etc etc. Thanks.

-Sean

[tetrode]

I think it was one of you guys was the one who did all the testing on the Genesis lights. I know you guys found that the light controls are not linear. However, as you also found that they were very consistant, could you safely give numbers for the stops. For example if 60 is full power, what is one stop down (47? 48?) 2 stops etc etc. Thanks.

-Sean

Hi, Sean;

I think this is the post you're remembering:

http://photography-on-the.net/forum/showpost.php?p=4979233&postcount=171

Dave F.

[seanmsulli]

That's the one. Thanks.

[seanmsulli]

One more question: you had found the problem of the uneven light spread of the reflectors and thought that maybe texturizing them as some had done with the PCB reflectors might help fix it. Has anyone tried this and did it help? Also is it only a problem when using the umbrellas as shoot through or does it effect it bounced as well?

Thanks again

[tetrode]

One more question: you had found the problem of the uneven light spread of the reflectors and thought that maybe texturizing them as some had done with the PCB reflectors might help fix it. Has anyone tried this and did it help? Also is it only a problem when using the umbrellas as shoot through or does it effect it bounced as well?

Thanks again

I only have a second, Sean so I'll type fast: It was Robert (TMR Design) who texturized a Buff reflector to good effect. I never tried that.

Here's the pattern thrown by the stock Genesis reflector:

http://farm4.static.flickr.com/3191/2556754634_0f39e3811a.jpg

It's ugly, no doubt about it. I had posted a follow-up photo showing the nice even coverage of an 8-1/4" Elinchrom reflector on the Genesis light.

Bottom line: Get a genuine Elinchrom reflector (6-1/4" if you're using umbrellas) and be happy. The difference is amazing.

Dave F.

[andy2605]

The Interfit EXD200 is very similar to the Genesis 200. Interfit have produced a chart for f/stop to digital read out .

http://www.interfitphotographic.com/Lighitng/Pop%20up%20pages/EXD200%20display%20readout%20pop%20up.html

Might be of some help. The scale is definately not linear!!!

[seanmsulli]

Thanks for the response. Purchasing to Elinchrom reflectors seems like it would eat up the cost savings over the similar level Alien Bees. I was hoping someone had tried TMR Design's texturizing trick on the Genesis to see if it helped. Maybe I should post this one to the whole forum. Thanks again. You guys have been a tremendous source of information.

-Sean

I only have a second, Sean so I'll type fast: It was Robert (TMR Design) who texturized a Buff reflector to good effect. I never tried that.

Here's the pattern thrown by the stock Genesis reflector:

http://farm4.static.flickr.com/3191/2556754634_0f39e3811a.jpg

It's ugly, no doubt about it. I had posted a follow-up photo showing the nice even coverage of an 8-1/4" Elinchrom reflector on the Genesis light.

Bottom line: Get a genuine Elinchrom reflector (6-1/4" if you're using umbrellas) and be happy. The difference is amazing.

Dave F.