Jump to content


Phil Rudin

Member Since 25 Jan 2005
Offline Last Active Today, 06:11 AM
-----

#350827 Olympus 12-40 F/2.8 and the Zen Underwater DP 170 n85 port

Posted by Phil Rudin on 26 July 2014 - 06:40 AM

No filter required for the 9-18mm zoom and better overall performance than a 4" (100mm) port. The smaller port will obviously work better for confined spaces and at closest focus.


#350766 Olympus 12-40 F/2.8 and the Zen Underwater DP 170 n85 port

Posted by Phil Rudin on 24 July 2014 - 10:52 AM

The 12-40mm F/2.8 gives you a little less magnification in auto focus than it does if you go to manual focus and crank the lens as far out as it will go, same same with all zoom lenses. So in practical terms using auto focus and the Zen DP-170 n85 II dome port you are looking at getting to around 1:1.5 in 35mm terms or about 55mm on the long side by 41.25mm. 




#350711 Olympus 12-40 F/2.8 and the Zen Underwater DP 170 n85 port

Posted by Phil Rudin on 23 July 2014 - 08:27 AM

Hi Tom, Did you not look at the photos above, the starfish tip is full frame at close to maximum magnification and the 100% crop shows the detail at F/2.8. It is quite clear that in some cases the 170mm dome will be harder to get close with than say a 100mm or less flat port but that would not be comparing apples to apples. The lens that should be compared to the Olympus 12-40 is the Panasonic 12-35 zoom which works in the same port. Most will want to compare the 12-40 to the Olympus 12-50 using the flat port. The 12-40 is a much better lens than the 12-35 or the 12-50 in terms of image quality. If you can use the 12-50 with the DP-170 port the 12-40 wins hands down, it will focus much closer than the 50mm end of the 12-50 and has better image quality throughout the zoom and aperture range.

 

Attached are images with the 12-50 at 50mm max. magnification rendering about 1:5 in M43 or 1:2.5 in 35mm terms and the 12-40 at 40mm max. magnification rendering about 1:2.6 in M43 or about 1:1.3 in 35mm terms, Quite a difference in how close they will focus. You can argue the 43mm semi macro behind the Nauticam flat port which gets you to about 1:1 in 35mm terms v. 1:1.3 but then you don't get full use of the wide end of the lens.  

Attached Images

  • P7180011.jpg
  • P7180017.jpg



#349714 GX7 vs OMD series under water

Posted by Phil Rudin on 01 July 2014 - 02:52 PM

My mistake on the GX7 housing, I am sure that the EM-10 will drop in price as well when it has been out a few months.

Agree that the E-M1 system is the best at this time and the GH4 is I am sure the best option for those interested more in video.


#348581 EM-10 Housing?

Posted by Phil Rudin on 03 June 2014 - 07:10 AM

Hi Ted,

The E-M10 and Panasonic 8mm fisheye behind the Nauticam 4.33" dome or the ZEN 100mm dome will give you great CFWA. The lens will focus to the port glass and give the same type of results as with your D70 not withstanding the differences in format, (4:3 v. 3:2).

Small difference in overall image quality due to the greater resolution of the NEX-7 and NEX-7 will have better video quality. For the price of the system the E-M10 is an excellent value to me with excellent image quality.

Attachment is Panasonic 8mm fisheye with ZEN 100mm dome focused within an inch of the dome.

Attached Images

  • P4271113.jpg



#347935 Olympus OM-D E-M5

Posted by Phil Rudin on 20 May 2014 - 07:51 AM

I would try a four pack of these jumbo blocks to start about 1.7 lbs. of flotation, they should fit on your Nauticam arms with no problem. They also have a smaller version.

http://reefphoto.com...roducts_id=2321


#347676 Aquatica for EM1??

Posted by Phil Rudin on 14 May 2014 - 05:17 AM

Several after market gears are out including the one attached. The problem then becomes if you intend to shoot the lens behind a dome without the ability to attach a closeup lens or will you want to shoot behind a flat port so that you can use the closeup lens. I think you should be able to use this lens in the Aquatica port for the 60mm macro lens since both lenses are about the same length. I use the 12-50 in my Nauticam 65 port for my 60mm macro, both ports have the 67mm thread for a flip adapter and/or closeup lens.

http://www.deepshots...s-by-deepshots/

Attached Images

  • P2180353.jpg



#347628 Aquatica for EM1??

Posted by Phil Rudin on 13 May 2014 - 05:35 AM

I use the ZEN Underwater 100mm optical glass dome with the Panasonic 8mm fisheye and the Olympus 12mm. Both focus to the glass and give outstanding results with the Nauticam housing for E-M1. ZEN also has an outstanding 170mm dome for the Panasonic 7-14 and 12-35, Olympus 7-14, 9-18, 12-40, 12-50 and more.

Not sure if these ports will be made in an Aquatica mount.

 

Carlos, you are an excellent photographers and put the fisheye and 7-14 to great use so this may not be a big issue for you but some consider the 12-50 zoom to be the holy grail of all purpose lenses for the M43 system. If you intend to use this lens with the macro feature locked at 43mm) you may want to know if Aquatica intend to support its use because it is a quite complicated lens to support with all of its features. To make it zoom from 12 to 50mm is not hard only getting it to lock in the macro mode is a nightmare. 




#341917 Sonys' new A7(r) FX mirrorless

Posted by Phil Rudin on 15 January 2014 - 09:53 AM

A request regarding size differences between housings, from left the Nauticam NA-EM1 housing (Olympus OM-D EM-1) Sony A7/A7r housing and the Nikon D-800 housing. In the rear is the Nauticam RED video housing.

Attached Images

  • P1140016.jpg



#341618 Mirrorless Forum?

Posted by Phil Rudin on 09 January 2014 - 11:13 AM

Since the current crop of mirrorless cameras have every bit as good an image quality and camera features as DSLR's and because many DSLR shooters have moved to or are going to move to mirrorless cameras maybe it would make more sense to change the name of this forum to Digital interchangeable lens cameras/housings.




#341617 OM-D EM-1

Posted by Phil Rudin on 09 January 2014 - 11:00 AM

Auto WB is how I have been shooting since I went digital and Olympus has one of the best auto WB systems made so I don't have much experience doing presets to compare it to. I shoot RAW and convert to JPEG when I need one. What I am seeing on the LCD is a JPEG so I get a good idea of what the finished RAW file will look like anyway.

 

More EM-1 photos from yesterdays dive, 60mm macro, Nauticam NA-EM1 housing, Nauticam 65 macro port, two Inon Z-240 strobes, all with the SAGA +15 C/U lens. ISO-100, 1/320th of a second, F9-F14. Very poor vis day. ALL of these images are about 6mm on the long side or about 3 times the M43 life size of 17.3 mm long side. Very Very little DOF.

Attached Images

  • untitled-1080019.jpg
  • untitled-1080055.jpg
  • untitled-1080069.jpg



#341484 OM-D EM-1

Posted by Phil Rudin on 06 January 2014 - 02:13 PM

Photos from todays dive at the BHB using the new Olympus E-M1 with the 60mm macro lens in the Nauticam NA-EM1 housing, two Inon Z-240 strobes.

 

 

 

Attached Images

  • untitled-1060058.jpg
  • untitled-1060071.jpg
  • untitled-1060097.jpg
  • untitled-1060144.jpg



#339953 Olympus OM-D E-M5

Posted by Phil Rudin on 26 November 2013 - 06:51 AM

It fits the fisheye domes but it has manual focus, manual aperture settings and no electronic contacts so the camera does not recognize the lens as being on the camera. I don't no of any focus or aperture gears for Olympus or Nauticam housings.




#339490 Olympus OM-D E-M5

Posted by Phil Rudin on 15 November 2013 - 06:44 AM

Hi Karen,

 

The gear you have a link to works off the zoom gear in the housing so the Nauticam 12-50, 60mm macro or 45mm with 20mm extension ports will all work with this gear.

 

I use the Nauticam 45 degree viewfinder with my NA-EM5 housing all the time. It is easy to remove and reinstall when you travel and it makes a huge difference if you only use the viewfinder like I do. I agree that you should try the housing without it. Keep in mind that you will also need the replacement rear LCD window that supports the viewfinder, also user installable.

 

Phil Rudin




#337332 Red filter for Panasonic 7-14 lense

Posted by Phil Rudin on 22 September 2013 - 01:52 PM

The Panasonic 8mm fisheye has a filter holder on the rear of the lens and it can be fitted to the Pana 7-14 zoom for magic filters and such.