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Member Since 25 Jun 2011
Offline Last Active Yesterday, 12:46 PM

Posts I've Made

In Topic: New Nauticam 29 port for Panasonic 14-42mm PZ could be a blast for 4K video s...

09 February 2016 - 09:24 PM

I worked out the difference. Working distance on land 22cm in water becomes 29cm equivalent diopter power 3.45 plus Inon lens 6.06 total 9.51 working distance from the back 10.5 cm. I think having an Inon 165 is almost necessary otherwise you have nothing to cover working distance between 7.5 and 16.5 cm. Not all fish can be approached as close as the CMC requires to focus. With the 14-42mm lens other than a small chromatic aberration in corners that gets cropped in 4K the CMC additional power compared to two stacked Inon lenses is only 9%

In Topic: New Nauticam 29 port for Panasonic 14-42mm PZ could be a blast for 4K video s...

08 February 2016 - 02:05 PM

The Inon lens is +7 on land but reverts to 6 in water. My tests were in water. The CMC doesn't loose power in water

In Topic: UHD 'Premium' Specifications

08 February 2016 - 03:29 AM

No only one part of the displays will be compliant so not all of the current range. Funny enough plasma tv support HDR better and it is quite hard for LED and LCD!!

In Topic: UHD 'Premium' Specifications

08 February 2016 - 12:18 AM

My view is 4K is not really that great and you need something else to make it appealing. The new colour scheme and HDR will make bluray look great and create a wow factor for 4K however those improvements could have been achieved already with HD. Also UHD premium is designed for displays not for receding devices as far as I know and no consumer camera at the moment can achieve the specifications

In Topic: High CRI video lights for macro work

07 February 2016 - 01:46 AM

You have also to account for the fact that the shutter speed are set according to the frequency of artificial lighting. In Europe 50 Hz in US 60 Hz so if you are in Europe and you are shooting ntsc with 1/60 or 1/125 you may have flickering light. With underwater led this is not an issue at all and unless the shutter speed is too low there is actually not much of an issue unless the shutter speed is really high and you get a stroboscopic effect. When you play clips on s computer it makes no difference at all. Only when you view them on a TV you can see differences. My preference for smooth footage is pal 25p with 1/50 shutter speed. I have tried 50p but my eyes can't see anything smoother at all so have abandoned double frame rate 3 years ago.