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Geo Cloete

Member Since 15 Aug 2013
Offline Last Active Mar 01 2018 12:34 PM
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Posts I've Made

In Topic: Can't see a thread any more

17 January 2018 - 08:12 PM

Thank for the help Tom, but no it was a different thread.


In Topic: Best wide angle lens for Nikon D850 in Nauticam housing

12 January 2018 - 01:16 AM

This is ongoing issue in all photo forums above or below water, suddenly you have extra resolution and when you look at the corners at 100% in Photoshop you discover that the image does not look as sharp as the lower resolution older model, therefore the new camera causes poor corners.  In fact the corners are the same as they always were and the image will look the same if you downsample to 36 MP or whatever the resolution of the previous model was. 

 

The actual situation is you can't take advantage of that extra resolution in the corners because the lens does not resolve that well in the corners. 

Hi Chris, I am aware of some of these discussions and I am also aware of some debunking them.
We have to keep in mind, that even the old lenses available today were designed for film "resolution" A good quality film photo, still holds more data than the top line of digital full frame cameras. We know that not all lenses are made equal, but I can't recall ever hearing in the film days that soft corners were blamed on film having too much resolution power. 


In Topic: Best wide angle lens for Nikon D850 in Nauticam housing

08 January 2018 - 08:53 PM

I must say I am still a bit baffled as to why the high megapixels of the D850 is considered to be part of the problem when discussing soft corners.
Does the various dome port theories not deal with the curvature of the dome, the way the light rays bends through the dome glass and how wide the lens being used behind the dome are?

To the best of my knowledge, none of the theories state that the light will bend differently depending on the megapixels of the camera. 

Alternatively, if considering that the 14-24mm paired with the D850 delivers beautiful results topside, but not underwater surely we can agree that what has changed in the equation is not the megapixel count going from topside to underwater, but the fact that the 14-24mm is now behind a dome port.


In Topic: New Inon Z330

03 January 2018 - 11:07 AM

Thanks for posting Adam,

I can see that the Z330 has less fall off, but oddly looking at the two photos the one shot with the Z240 looks brighter in the center.
 


In Topic: Subal insolvent

02 January 2018 - 01:57 AM

Sad and confusing news indeed. 

I was also nearing placing an order for an ND850, but would not do so until I have crystal clarity on what all this means for Subal owners. 
It does make sense that the main Subal office should be located at a location easier to access and one wonders why this was not done a long time ago.

Hopefully, another lesson will be learned from all this. In the current market, it's crucial to have great PR and communicate effectively with your market. Sadly from my experience, Subal lacks in this department and I can only hope that they will address it asap.