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CheungyDiver

Member Since 26 Nov 2002
Offline Last Active Jun 09 2015 10:19 PM
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Posts I've Made

In Topic: Fish eye or rectilinear for filming?

02 June 2015 - 03:10 AM

Hi Drew

 

Yes correction needed. Epic Dragon is 1.17x relative to full frame 35mm sensor. So for 15mm Zeiss it is almost 18mm (17.55mm) :)

 

And the RS 13mm will be @ 15.21mm  sorry gone off topic again.

 

cheers


In Topic: Locline. Does it always creak?

01 June 2015 - 11:22 PM

If it creaks try some lube :) :) :)

  

 

I am looking at some old world goose neck lamps. Not the lamp but the bendy metal part. I have not found one that could resist sea water. I think the new "metal" Gorilla-pod could be hacked and butchered into video light arms. If I found one that works as well then I will let you know.

 

cheers


In Topic: Fish eye or rectilinear for filming?

01 June 2015 - 11:17 PM

Hi Jon

 

I would agree the 15mm Zeiss is a fantastic wide angle lens. 

I recently just came back from a dive trip using the RS 13mm with an adapter for the Dragon housing. Full mechanical control for focus and aperture. The 13 mm RS is now my new favorite lens. Surprisingly it is not as "fisheye" as one would expect. I think on the S35 sensor (approx. 1.6 crop) its like a 20mm.

 

Some pictures soon when I could grab a hour or two....

 

cheers

David


In Topic: Giant Octopus in East Sea of Korea

29 April 2015 - 11:19 PM

Thats a big O'puss Eunjae!

 

They grow them big in the Korean sea.....One has a white patch on its "head". Why is that? Warning sign or something?


In Topic: Lets talk lumens!

29 April 2015 - 11:13 PM

Yes. You will need less angle of beam in certain situations. Beam should be even in either spot, medium beam or wide beam. To do so correctly in a powerful light would need some sort of lens/ diffuser. 

 

One thing to note is that better powerful light heads do not use array of power LEDs that is spread out in the light because that would produce multiple shadows. 

 

Two cents worth...  :)