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KarenW

Wide Angle Recommendations for OM-D EM-5 or EM-1

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Great pics! The corners on the 12mm are very soft at f/2.0 behind the 4.33" dome (even at distance). You can use f/8 and get better results, but just buy a $30 B+W 46mm NL5, +5 close-up lens and stick it on the front of the 12mm when you are underwater and the corners will be very sharp even at f/2.0. You won't be able to shoot above water with this setup except at very close distances.

Edited by coroander

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Over-and-unders with the Panasonic 8mm FE behind the Nauticam 4.33" dome:

  • Use manual focus *
  • Pre-focus on something about 50-60cm (1.5-2 ft) away from the front of the dome in the air (like your knee or a fin)
  • Use f/11
  • Take the shot
  • If you are shooting something underwater that is very close, then you can drop the in-air pre-focus down to 35-40cm (1.1-1.3 ft) from the front of the dome and use f/13.
  • In-air pre-focus distances greater than 60cm (2 ft) from the front of the dome have no use.

If you instead focus on something in the water, nothing above water will be in focus unless it's almost touching the dome. And if you focus on something at any distance from the camera above water, nothing underwater will be in focus.

 

* you need to have your camera configured to separate focus from the shutter ( http://wetpixel.com/forums/index.php?showtopic=48625 ), we still use autofocus to focus, but with the camera in manual focus mode and using the back lever on the Nauticam housing to trigger focus.

Edited by coroander
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Hi everyone...

 

Need some expert advise on the use of Nauticam 6" dome port designed for the Panasonic 7-14 mm with an Olympus 9-18 mm. I have read there is no vignetting indicating that there should be no issues, does anyone know of corner sharpness issue of using this larger dome with the 9-18mm lens?

 

Thank you so much for your help.

 

Regards, Vagabond

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