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peterbkk

Member Since 25 May 2005
Offline Last Active Yesterday, 12:16 AM
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Posts I've Made

In Topic: Lembeh Straits Extreme Macro

28 September 2014 - 08:50 AM

Surreal!

In Topic: GH4 with 14-42mm lens or LX100?

27 September 2014 - 10:29 AM

Hi all,
 
I'm in a dilemma. The Panasonic LX100 is 24-70mm with Power OIS. It seems comparable to the GH4 with the Lumix G X Vario PZ 14-42mm, which also has Power OIS. The LX100 has faster Leica lens, and half the price of the GH4.
 
I'm concern about if there would be any housing for the LX100 because the hot shoes flash for the LX100 is awkward, and the biggest problem is the LX100 has very long lens barrel, so making a housing for it might not be possible.
 
Anyway, I'm weighting out the price of going with the GH4 solution since it has better housing support like tripod ready, angled handle, vacuum leak test ready etc. If I were to get the 14-42mm lens for the GH4, does that mean I have to get the Nauticam P1442X-pz gear ($220) and the Nauticam Macro Port 35 ($290), so essentially additional cost of $510 just to use the  PZ 14-42mm lens for the GH4?
 
Sorry I never use an interchangeable lens system under water so I don't know what gear is needed for what port, or if some lens even need gear if it has power zoom.
 
Moses


In the end it's always a personal choice involving several trade-offs.

I suggest that you don't get too concerned about OIS. It's designed to reduce typical hand-shake - more important for "above water" photography. Underwater, the movements are different from hand shake. OIS doesn't deal with it well. Shooting WA underwater, OIS is not required - housing balance and technique is more important. For underwater macro, no OIS will overcome camera movement - other forms of stabilization are required, e.g. tripod.

Regards
Peter

In Topic: GH4 with 14-42mm lens or LX100?

27 September 2014 - 10:14 AM

With the 4k crop the GH4 will be useless with the 14-42mm bare port unless you only shoot close ups


"Useless" is a rather wild statement and quite incorrect.

At the wide-end behind a flat port, the 14-45mm makes a good MS lens. For example, recently in Komodo, I was able to get some footage of the whole body of a very large octopus by pulling back to about 1.5 meters away and, from 2 to 3 meters distance, I was able to shoot the octopus sitting on a coral head. So with the flip diopter, one lens was able to give me CU of the octopus eye, a wider CU of its head, its entire body and its environment.

Not what I'd call "useless".

Regards
Peter

In Topic: GH4 - Nauticam Macro Lens/Port Thoughts

04 September 2014 - 05:48 AM

No I mean in practice (not theory) with the 14-42mm PZ, and definitely not stacked.

Oh dear. I'm sorry but I didn't take much notice of distances. I mainly decided which macro lens to use based on size of critter;
- smaller than a nudibranch: use the +10;
- nudibranch or bigger: use the +5;
- establishing MS: no diopter, zoom out to about 15mm and shoot from about a couple of feet away.

(I'm more right brain than left brain)

From memory, with the +10 and the zoom at about 30-35mm, I was shooting from about 2 to 4 inches from the subject.

With the +5, I used a wider range of zoom, using from 20mm to about 35mm, shooting from about 4 to 8 inches, I think.

When I dive Cannibal Rock next week (a great macro site in Komodo), I'lll try to pay more attention to distances....

Regards
Peter

In Topic: GH4 - Nauticam Macro Lens/Port Thoughts

03 September 2014 - 05:57 PM

I just got back from 4 days of excellent diving in Lembeh with the GH4.

I haven't had time to do a proper edit but I know that some of you are interested in how the macro lens combinations worked in the real world. So, I quickly pulled together a few examples. They have not been graded, stabilized or adjusted in anyway.

Here is the equipment that I used.

Panasonic GH4 set to C4K 24fps, 1/50 Shutter Priority, PinPoint Focus-AFL/AEL
Nauticam NA-GH4 Housing
Lens: Panasonic Lumix 14-45mm PZ
Nauticam System 35 Port with Flip Holder
Subsee +5 Macro Diopter
Inon UWL100 +10 Macro Diopter
iTorch 7 - 5000 lumen lights x 2 mainly on 1/4 or 1/2 power

The footage was imported into FCPX, some samples quickly selected, then exported as a 4K Mov file. The 4K file was compressed into 1080P before uploading to Vimeo



On a large monitor, the 4K footage looks great. So, I'm happy with the macro set-up. The Subsee +5 is excellent for larger subjects and the Inon +10 works for little stuff.

The Lembeh Sea Dragon at the start of the sample footage is so tiny that it kept "disappearing" and I had to find it again - like a tiny piece of string with a small knot on the end. I shot that with the +10 Inon.

The red Starry Night Octopus was a big fellow - about the size of a football. The wider whole-body shots were done with just the 14-45mm lens (at the 14mm end of the zoom), but the close-up on the eye was shot with the Subsee +5.

The blue-ring was also the +5 with the 14-45mm zoomed to about 35mm.

What would I change? Not much. It works well. It'd be great if I had a double-flip adapter so I did not need to take off the +5 and put on the +10 for the really little stuff but that's mainly a Lembeh issue and i may find that the +5 works for most stuff elsewhere.

Regards
Peter

PS. Next week I'm off to Komodo to put the 7-14mm / Zen 170mm through its paces.