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Larry C

Member Since 10 Dec 2005
Offline Last Active Jan 30 2015 07:18 PM
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Posts I've Made

In Topic: Full Frame SLR wide angle corrector port tests

18 January 2015 - 12:07 PM

Looks like everything above f5.6 is brilliant.  Love the Gorgonian with the sunburst.  Not fond of the background blur with the 20mm, but I imagine that's the lens.


In Topic: Land based flash underwater?

12 January 2015 - 02:49 PM

Until recently, all of the Olympus strobes were housed.  I had the little strobe they sold for my SP-350, and it worked beautifully in ttl or manual mode.  As someone else said, great for macro, but too narrow and too weak for wide angle.  I've also seen a bunch of DIY posts for Vivitar strobes, which are a dime a dozen.

 

Here's a DIY example:  http://eocean.free.f...be/indexstr.htm

 

Others have used pipe, but it's awfully big that way.


In Topic: Sigma EX 17-35 F2.8-4.0 for full frame?

12 January 2015 - 02:13 PM

Terrific.  Thanks for the help.  I got the non HSM version, which is a bit smaller and fits fine in my dome.  It looks like the Sigma 10-20 gear might be close.  Otherwise, I have a spare Sea & Sea 60mm gear that I could alter or make a mold and build one out of resin.  I'm looking forward to trying it on my F100 as the widest lens I had for full frame was my 35mm f2.0.  One thing I really like about the lens is that it zooms inward for both ends of the range and the center area is only about 1/4" different.  In reading reviews, people complained a bit about sharpness and contrast so we'll have to see.


In Topic: Venus Optics 60mm f/2.8 2:1 macro lens

06 January 2015 - 03:05 PM

2-1 macro @ 18cm (about 6") sounds interesting.  It should allow some working distance compared to a Nikon 60mm.  You'd have to measure the body and compare to other lenses to find a focus gear that will work.


In Topic: Sigma EX 17-35 F2.8-4.0 for full frame?

05 January 2015 - 01:07 PM

Thanks Juergen.  Just got a good deal on one on E-Bay, and I plan to try it on my D300 and my F100.  What extension length do you use with your smaller dome?