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Member Since 13 Jan 2010
Offline Last Active Yesterday, 06:48 AM

Posts I've Made

In Topic: 4K: Current Pro- and Semi-Pro Underwater Filming Options

31 May 2015 - 06:36 AM

Canon 1dc, has a nauticam option.

In Topic: Fish eye or rectilinear for filming?

25 May 2015 - 07:50 AM

I will echo what others are saying....the 17-40mm in my opinion is horrible behind a dome.  I have one, and only used it a few times, as I would get angry at how bad the image looked after I was done filming.  So that lead me to use the 15mm fisheye.  This lens on the other hand is very sharp, and focuses close.  Really the only negative is warped look, which in most cases I don't mind.  If you are doing reefs, mantas, sharks open water etc...I think it works fine and the warping isn't a big deal.  Again, this is personal preference.  


Here is an example of the same camara (canon 5dII) you are using and what the 15mm fisheye looks like.



Now for the Rectilinear, seriously, don't buy the 17-40mm.  It is an old lens, and for on a couple hundred more you can have, as Drew pointed out the new 16-35mm with IS.  I recently purchased it because I was going to Truk for wreck diving, and knew the fisheye wouldn't look good there.  And boy am I glad I got it!  It looks really good imo.  The corners aren't perfect but 1000% better than the 17-40mm.  And just the color you get out of it seems to be better.


Here is an example of the 16-35mm f4L with the Canon 5dII..


I also found the IS to be helpful with the lens...


Hope that helps.


In Topic: Locline. Does it always creak?

20 May 2015 - 09:39 PM

That's useful info Dustin.
Where did you get that Locline that didn't creak much? I have a feeling that new Locline might be a little quieter as it may still be a little slippery from the manufacturing process (injection mould release agent etc.).
And what brand of clamps are you using? Mine are Nauticam. Perhaps some are smoother than others. I wish manufacturers would offer them with a finer thread for finer control over the tension. However that would make them slower to assemble.


I got them from backscatter. They creak more out of the water than in. I really think it's the ikelite to locline adaptor that made the movement. And I also agree, that the newness of it may have made it quieter. I also only did the small solas on them, I wouldn't do the 4000's on them.

As for clamps, I use the Ulcs clamps and arms. To be honest I kind of man handle them underwater, I don't have a ton of patience so I keep all connections stiff, and then muscle it into place when I see a subject. This also creaks because it is tighter.
I also force my tripod legs, and have had to but new ball for the base of my tripod because I tweak them hard underwater without loosening much. Movement is nice, but the stability I think wins out for me on the arms. However, I think a lot depends on what you are used to.


In Topic: Locline. Does it always creak?

19 May 2015 - 06:30 AM

Hey Nick, I thought I would try locline in PNG, but after a few days I noticed that on my tripod shots, it took a while for them to stop shaking. It was a good 8 seconds before they would stop moving the camera after I hit the record button and took my hands off. Not sure if that has to do with the connection to the ikelite handle or what, but it was very disappointing because the movement was nice. Mine didn't creak as much as I was expecting, at least not more than my regular arms.

So after all that I went back to normal arms, which is fine. They work better in current and above water too. I just have to take the time at the beginning of the dive to losses the clamp just enough to to where I can easily move the arms. I use an 8 and 4 inch arm. Although might try and 8 and 12 next time.


In Topic: Giant Octopus in East Sea of Korea

29 April 2015 - 11:52 AM

Very Nice Eunjae!