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FORUMS General Gear Talk Flash and Studio Lighting 
Thread started 03 May 2010 (Monday) 12:56
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Genesis 300B

 
dmward
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May 03, 2010 12:56 |  #1

Just picked up a Genesis 300B.
They had quite a few of them on the floor in Chicago.
Got it unpacked and quick test with RF-602.
On AC full power about 2 1/2 recycle
On DC Full power about 3 1/2 recycle

Its an NiMH battery.

The reflector was hard to get onto the light, slight deformation.

Will do some testing tomorrow.


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May 03, 2010 21:06 |  #2

subscribing...


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dmward
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May 03, 2010 21:52 |  #3

Paul,
I used the 300B for some product shots this afternoon.
Seems to work just fine as a mono.
The battery showed almost full charge when I took it out of the box, but the instructions said to charge before useing.
So, I put it on the charger. Green light in about 2 1/2 hours so it was probably between 1/2 and 3/4 charge.

The battery pack is larger than Quantum Turbo pack but lighter.

It will be interesting to see what the flash meter says about output.

One thing I've noticed, the power setting is 60 to 10 i.e. five stops. Its the same for the Genesis 200. Which means that 60 on the 200 means less light than 60 on the 300. It will be interesting to see how well the 1/10 digital scale works.


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c2thew
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May 03, 2010 22:20 |  #4

wow, subscribed too! hopefully elinchrom will follow suit with one that is more universal


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May 03, 2010 22:49 |  #5

will also be following this thread...


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TMR ­ Design
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May 03, 2010 23:05 |  #6

c2thew wrote in post #10116349 (external link)
wow, subscribed too! hopefully elinchrom will follow suit with one that is more universal

One what?


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dmward
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May 04, 2010 18:30 |  #7

For those of you who are interested, I added two pages to my tutorial site related to the Genesis 300B.
One page is a review. Not overly detailed just my observations from testing it this morning.
The other page is examples of various modifiers attached to the light.

My main concern, and I noticed this with a Genesis 200 as well, is that the numeric digital power settings, which are supposed to be in 1/10 stop increments aren't. The result is that the 5 stop range ends up being more like 3 and a half.

I'm going to do some more measuring because there are so many outside influences like wall/ceiling reflection, reflector etc.

After fully charging the battery I got these results; 12 full power pops in 30 seconds on AC; 8 full power pops in 30 seconds on DC.


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May 04, 2010 20:23 |  #8

dmward wrote in post #10121969 (external link)
For those of you who are interested, I added two pages to my tutorial site related to the Genesis 300B.
One page is a review. Not overly detailed just my observations from testing it this morning.
The other page is examples of various modifiers attached to the light.

My main concern, and I noticed this with a Genesis 200 as well, is that the numeric digital power settings, which are supposed to be in 1/10 stop increments aren't. The result is that the 5 stop range ends up being more like 3 and a half.

I'm going to do some more measuring because there are so many outside influences like wall/ceiling reflection, reflector etc.

After fully charging the battery I got these results; 12 full power pops in 30 seconds on AC; 8 full power pops in 30 seconds on DC.

David,

Your results are consistent with other Genesis owners reports. Unlike the D-Lite's (and most other digitally controlled strobes, the precision in the digital controls of the Genesis is just not there and the range is not nearly what is claimed by the manufacturer.


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dmward
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May 04, 2010 21:40 |  #9

Rob,
That was one of the things I was going to check.
Just checking two units is kind of a small sample, but on the other hand they are random so do represent something similar to a QA testing sample.


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tetrode
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May 04, 2010 21:55 as a reply to  @ dmward's post |  #10

Ah, this is such a trip down memory lane:

https://photography-on-the.net …p?p=4979233&pos​tcount=171

Dave F.




  
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dmward
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May 04, 2010 23:34 |  #11

Dave,
That sounds like a relatively accurate description of what I found with the 200s I picked up a couple of weeks ago.
I got the 300B Monday because I wanted to see how it performed with the battery.

Aside from the wierd power setting behavior, its a nice light.

The battery is light and seems to deliver a recycle time that approximates what I've gotten with QFlash at full power. And, amazingly the light and battery are not any heavier feeling, haven't actually weighted them. One big advantage is the ability to go to mains power with the flip of a switch.


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dmward
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May 06, 2010 17:57 |  #12

I just did some Hyper Sync tests with the 300B, and Pocket Wizard ControlTL.
With power set at 30, the 300B delivered good exposure at 1/2000 F2.8 at ISO 200. The 300B had a 36" Octibox attached with both defusion panels. The front panel of the Octi was about 5 feet from the subject.

Given the nature of Hyper Sync, the F stop and shutter speed relationship is nearly linear. F 8 at 1/250 looked nearly identical. Interestingly, the defusion panel I used for a background shows the light fall off toward the left, which is consistent with less light as the flash output tail dims.

The image is SOOC, without any Lightroom manipulation. The white square on the color checker is a bit under exposed, the black square is right on the reference value. The image was import processed with my 5DII custom profile and a strong tone curve with zero black compensation.

If it doesn't rain tomorrow I should have time to do a test outside in real sunlight. The 1/2000 F2.8 at ISO 200 is just about equivalent to sunny 16 and there are two more stops of light available. My test with the 300B delivered F16 6/10 at 60 and F8 6/10 at 30.

And the battery keeps up nicely.


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c2thew
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May 06, 2010 19:35 |  #13

is it just me or is your white balance slightly warm/red?

could be my monitor...


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May 06, 2010 20:03 |  #14

c2thew wrote in post #10135321 (external link)
is it just me or is your white balance slightly warm/red?

could be my monitor...

It's not just you. I'm seeing a bit of magenta.


Robert
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dmward
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May 06, 2010 21:53 |  #15

The white balance was not corrected.
It is the Adobe auto white balance for the camera profile.
Clicking the white balance eye dropper on the second square from left gets it just about perfect.


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Genesis 300B
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