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Phil Rudin

Member Since 25 Jan 2005
Offline Last Active Today, 08:46 AM

Posts I've Made

In Topic: Shooting Experience - Oly 30mm vs. 60mm Macro Lenses

12 November 2017 - 09:49 AM

First of all the topic is shooting experiences with the Olympus 30mm macro V. the 60mm macro lens. The issue with the Olympus 30mm macro is VERY limited working distance and the port you are using. With my Nauticam NA-EM1 II the 45 port is recommended. In that port the front of the lens is about 10mm from the outside of the port glass leaving a working distance of about 10mm between subject and port at 1.25:1 or maximum magnification. Using say a plus 10 closeup lens would reduce the distance to 5mm plus the thickness of the CU lens would leave little to no working distance. In addition the CU lens would be at least 10mm from the front of the lens which would reduce the magnification of the lens because of the distance between the two lenses. Also the Olympus lens is already a 1.25:1 lens which at 1.25:1 is about the same amount of magnification as you would get with your Panasonic lens at 1:1 plus the ULC-165 wet lens. This is assuming that your lens is closer to the port glass on your housing. With the very best placement your lens at 1:1 plus the the Inon UCL-165 would get you to about 1.3:1.   


For subjects the size of a Pigmy the 60mm macro is just the far better choice and at 1:1 you can use about +25 of magnification in front of the lens before the working distance becomes to limited. This would give you magnification of about 5:1 or a subject about 3.5mm on the long side.   

In Topic: Shooting Experience - Oly 30mm vs. 60mm Macro Lenses

10 November 2017 - 01:17 PM

OLYMPUS which has just gone on sale in the US for $199.00 for other readers who may be interested.

In Topic: Mini Flash Trigger Nauticam #26309 for Gh5

10 November 2017 - 10:49 AM

On Olympus you can not over come the 1/250th sync. speed and my flash trigger works fine with single fiber cables. The problem is with the cables not the flash trigger most likely.

In Topic: Shooting Experience - Oly 30mm vs. 60mm Macro Lenses

10 November 2017 - 10:42 AM

This again is a bit like comparing apples to oranges. The 30mm has twice the angle of view and twice the depth of field V. the 60mm at the same F/number. The 30mm does not work with closeup lenses because of the close focusing distance while the 60mm works quite well with +5 to +25 amounts of magnification. 


This is a bit like comparing the 7 mm end to the 14mm end of the Olympus zoom. Both work very well for what they were designed for. I look at the 30mm as a 1:3 or greater size lens while I look at the 60mm as a 1:3 or smaller size animal. If I am looking to do super macro 60mm is my choice Fabio's which are all in the appox .1:3 or larger range the 30mm works great. For an under $300.00US lens the 30mm has excellent image quality and is easer to use because of the wider angel and greater DOF. 


I find the 30mm to be an excellent black water lens because the 60mm is a bit difficult to focus while I and my subject are both moving. 


Bottom line is I would own both if you can afford to do that because they simply don't replace each other.


Photo is from a black water dive and the subject is a little larger that a US quarter, Larval Stage Sea Anemone, 30mm, ISO-200, F/7.1, 1/250th sec, two Inon Z-240 strobes, Nauticam housing and 45 port.

In Topic: Sony/Nauticam FE 16-35mm F/4 zoom and zoom gear

13 September 2017 - 07:00 AM

Carry I have the N100-N120 35.5mm port adapter, the 16/35 zoom gear and the Nauticam 180mm optical glass port. You will also need a 50mm port extension. Contact me at tropicalone@bellsouth.net if you are interested in any of my equipment.