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Member Since 23 Jul 2010
Offline Last Active Today, 03:14 AM

Posts I've Made

In Topic: Potentially a new Sony A6000 setup - macro capabilities? FE 50mm F2.8 Macro L...

23 October 2016 - 07:46 PM

I find it important to think about the type of macro shots desired while deciding on the lens. I'm after greater than 1:1 so a 50mm lens would not do it for me, or would be too close. I use the Olympus 60mm lens on m4/3 so that's 120mm equivalent. Then with a +5 diopter i get better than 2:1 and still maintain enough working distance to get light on the subject. Essential for pygmy seahorses, xenia crabs, anemone shrimp, etc.

Minimum focus distance is usually measured from the sensor focal plane. For example, my lens has a minimum of 18 cm, but that means it will focus within 7 cm of the port glass at 1:1.

In Topic: Anemonefish eggs - help me do this better

22 October 2016 - 03:50 PM

Those shots were taken with an Olympus E-M5, 60mm macro lens, and a Subsee +5 diopter for the first two.  I've only just started trying out WA with a 7-14mm lens but no way will it focus close enough to even see something as small as those eggs.  Actually that lens is not very good for CFWA (and yeah I was warned but wanted a rectilinear lens for topside).  I haven't tried the 8mm FE lens, that should be a bit better for this scenario.  

In Topic: Anemonefish eggs - help me do this better

22 October 2016 - 04:05 AM

interesting idea, for sure.   i can readily imagine that third shot as you describe, but I'd have to be damn lucky to find the right scenario with eggs in the foreground and the fish behind them without an encumbering bit of reef limiting the depth of the scene.  That would be well worth pursuing. Especiaily if there was an upward aspect with a purple/green anemone in the foreground, blue water behind, and a sun ball in the middle distance!  A guy can dream . . . 


I'm just not sure how to execute it such a shot.  I'd love to know what lens/port combination could achieve a (+/-) 2:1 magnification ratio and a (+/-) 100 degree FOV simultaneously.  Given my usual opportunities I'd be all over such a set up.

In Topic: What did I find - conch / cowrie eggs?

21 October 2016 - 03:22 PM

Can anyone help out with these questions?

In Topic: Downsizing

20 October 2016 - 05:35 PM

I'm very happy with my Olympus E-M5 and looking forward very much to the E-M1 Mk II as soon as it is available.  The size and weight are perfect for my purposes and the IQ from m4/3 can be very good indeed.  I don't shoot video.


A couple of corrections.  Olympus housings can indeed interchange ports, but I find the Nauticam housings so good I would not want anything else.  The Olympus 12-50 kit lens is a very good all-rounder with decent macro performance, although the port and gear are expensive. The Olympus 60 mm macro is a fantastic lens. The Panasonic 7-14 mm lens has no compatibility issue and works very well on the Olympus body with a 6" port (though topside it is prone to some colour fringnig when shot into the sun).