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coroander

Member Since 10 Jun 2012
Offline Last Active Apr 16 2014 02:11 AM
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Posts I've Made

In Topic: "Best of" mirrorless topics before the forum was created

20 March 2014 - 10:44 PM

Maybe we can just move these topics into this forum? It seems strange to leave them in the DSLR forum now that there's a new mirrorless forum. Same for all the mirrorless topics in the first page of the DSLR forum. Cheers.


In Topic: OM-D EM-5 Nauticam with 9-18 zuiko?

17 March 2014 - 08:31 PM

The 8mm test is representative of my real world images underwater in the 4.33" dome. I was somewhat surprised by the test results, but when i went back and checked my real images, they were very similar.


In Topic: OM-D EM-5 Nauticam with 9-18 zuiko?

07 March 2014 - 11:12 AM

Panasonic 8mm FE behind Nauticam 4.33" dome centre 100% crop at f/3.5:

8mmFE-4.33-centre-1.jpg

 

And the corners (100% crop, click image for full-size); note that the corner target was about equal distance from the camera as the centre (focus) target:

8mmFE-4.33-corners.jpg


In Topic: OM-D EM-5 Nauticam with 9-18 zuiko?

06 March 2014 - 03:11 PM

Thanks nudibranco for trying out the 9-18mm in the 3.5 and 4.33" domes. These have much tighter optical radiuses and so results will never be near as good as with the 4" semi-dome.

 

Keep meaning to ask, nudibranco, if you could post results with the 8mm FE inside the 3.5" and 4.33" domes, particularly with regard to corner sharpness. I find that below f/8 with the 8mm FE in the 4.33" dome, that the corners get soft quite quickly. I'm wondering how the corner sharpness holds up with the 3.5" compared to the 4.33"??? Easiest to use the corner of the pool and use the tiles or place targets on two walls since the 8mm FE is so wide.


In Topic: Olympus OM-D E-M5

02 March 2014 - 12:53 PM

You can use the focus gear for the 60mm macro in the 12-50mm port.