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Julian D

Member Since 19 May 2012
Offline Last Active May 28 2015 02:19 PM
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Posts I've Made

In Topic: MV Rena Wreck Dive

28 May 2015 - 01:26 PM

Awesome!  That was a great place to dive before it had a wreck on it and I had been in two minds about whether they should leave it there or make the company take it off, but seeing your video I can see it will be a great to dive on so I'm swing that way again!   What was your depth?

 

Thanks for posting.


In Topic: Poor Knights Islands New Zealand

12 February 2015 - 04:31 PM

Good stuff, great to see some NZ images on here.


In Topic: YS-D1 Cutoff Issue

29 July 2014 - 01:11 AM

Hi.  Here's a couple few things you can try at home (with gear setup)

 

(1) Try increasing your ISO and reducing your flash power and see if this reduces the number of shots with the shutter showing.  Flash strength is proportional to duration so half strength will be roughly twice as fast and therefore allow a bit more latitude for the full flash while the shutter is open. Flash duration is very small but at full power on a small strobe I'm not sure it is as short as the conventional wisdom would lead us to believe.

 

(2) I read on a post here that someone noticed that the frequency of shutter appearing was different between landscape and portrait shots.  As the shutter is mechanical a bit of gravity (in the right direction) may possibly help.

 

(3) I've also read that hard wiring with sync cords gives better sync speeds than FO but I haven't seen anything that really explains why.  And that also doesn't explain the difference between your YS110 and D1.

 

Hope that helps.

 

Cheers


In Topic: Land based flash underwater?

13 July 2014 - 04:41 PM

Not sure if this helps or not but there's a Subal flash housing for an SB800 on e-bay at the moment (nothing to do with me). Cheers


In Topic: Complex DSLR system for scientific video -- thoughts on my plan?

30 June 2014 - 01:26 AM

Hi Troutnut, sounds like you have an interesting project on your hands.

 

I'm not an expert in video, and just a learner in still's I'm afraid but one thing that comes to mind reading your post is that if you are using a very wide lens and the fish is 10 feet away it will probably look tiny and you may not be able to see much detail in the footage.

 

I'm a keen trout fisherman and tried mounting my housing on a pole and taking some photos of trout cruising in a backwater not long after I got my housing.  I was using a tokina 10-17 lens and was surprised by how far away the fish looked even though they seemed very close.  Below is a photo of a trout 3 or 4 feet from my camera taken with natural light only (just a screen grab sorry). The water had a slight bit of turbidity but you can see in this photo that already the colour and detail is dropping off significantly.

 

Also I had a bike cable pulling the shutter lever and I noticed that when the trout were very close either the sound of the shutter or the slight movement of the lever spooked them a bit (not an issue with video I guess but worth considering). 

 

There is a guy on wetpixel who takes awesome photos of spawning salmon (the attached was a wild trout in a back country stream in summer).  I think his name is Tom Kliene (sp?) and I think he is also a salmon researcher so suggest you look him up and pm him.

 

Hope that is of some use and good luck with you project (make sure you post some footage).  It's winter here and I'm hopefully going to try again on some spawning rainbows soon.

 

Cheers