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bmorescuba

Member Since 12 Jun 2009
Offline Last Active Yesterday, 08:47 AM
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Posts I've Made

In Topic: YS-D1 Cutoff Issue

28 July 2014 - 12:53 PM

Thank you for the advice and I will test using 1/180 and see if I can prevent this in the future. Looking at the results, it makes a lot of sense to me. You can visualize where the curtain was closing when the strobe fired. Analyzing the situation, it does not make sense - why would it happen only 20% of the time with same shutter speed, and why would it never happen with the older strobe (ys-110a) on the same exact camera, lens, port, fiber cable, and camera settings? But the whole reason I ask the experts is that my analysis has failed me, so I'm glad to have a path to a solution!


In Topic: YS-D1 Cutoff Issue

25 July 2014 - 07:20 AM

Jack,

 

Thanks for your response. This did occur to me, but I guess I assumed that if the shutter speed were to blame, it would manifest on all shots. The problem only showed up on about 20% of the shots using the macro setup described. It didn't manifest at all with my wide shots and 2 strobes (the same ys-d1 + my older ys-110a).

 

All the shots on which the problem occurred were using these settings:

 

M (manual exposure)

1/200 shutter

ISO 100

f8-f16 variable aperture

 

I did not alter the default flash settings in terms of 1st or 2nd curtain firing. The other 80% of the shots where this problem did not occur also used 1/200 shutter speed.


In Topic: Spotted grouper in Komodo

27 February 2014 - 07:01 AM

It reminds me a lot of this:

 

http://www.flickr.co...157638813400454

 

which I had pegged as a V. louti. The violet spots match, and it has the saddle marks as well. But on my image, the tail margin is much more yellow, so I see what JimG is saying.

 

Of course, I could be wrong about mine as well. :) What a beautiful fish!


In Topic: FS: Nocturnal Lights SLX 800

09 February 2014 - 05:21 PM

On Ebay now

 

http://www.ebay.com/...984.m1555.l2649


In Topic: Backscatter? Circles

10 December 2013 - 07:09 AM

Thanks Alex! I suspected it might be something like that, but it makes more sense now that you've explained it.