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Member Since 16 Jan 2003
Offline Last Active Yesterday, 11:53 PM

Posts I've Made

In Topic: Full Frame SLR wide angle corrector port tests

10 July 2015 - 01:23 AM

Another use I have been exploring is informal panoramas. Taken without planning or tripod etc. Simply when faced with a scene to big to shoot, just taking a series of 4+ images and throwing them at the new Pana tool in LR.


The latest LR is much improved in making panoramas, and outputs a new RAW file (DNG), which is very nice. It even works very well with Fisheye shots - but only with large overlaps between the frames - as most of the fisheye frame is actually discarded by the program. 


Using a rectilinear is much more forgiving as much more of the frame can be used (with no corner issues to cause problems). So even when you are a bit sloppy with overlaps, it tends to work really well. I think this is a particularly valuable use of the corrector port. 


This one was 7 verticals - this is just cropped and straight from LR. It needs a few tweaks to Photoshop to be honest (there are some repeated fish!) - but as a 8 click solution (7 underwater and then one click in the software in LR). I think this is a really nice and super easy:


Attached File  RS15_am-16880-Pano.jpg   820.62KB   12 downloads


The original images here were shot with 20mm at f/10.


I did some really extensive ones with up to 58 frames shot - but I have not had time to build them up, yet. 



In Topic: Full Frame SLR wide angle corrector port tests

09 July 2015 - 12:12 AM

Hi Elmer, 


As soon as news is public I will post it here. They are not my secrets to share. Although I have been communicating my test results freely - as this is not a commercial project for me - and I am keen to share what I have been learning. 



In Topic: Full Frame SLR wide angle corrector port tests

08 July 2015 - 08:39 AM

Definitely interest in the concept from major UW manufacturers. Whether they will become a production reality will be confirmed before/at DEMA for sure. 



In Topic: Full Frame SLR wide angle corrector port tests

07 July 2015 - 03:08 AM

I am continuing to use this port on all my shoots and these give the opportunity to use it in more varied conditions and exploit its advantages. 


Here is a shot from the Red Sea. The dolphin encounter was very late in the evening - and shooting without strobes it was a big advantage to be able to shoot at f/4.5 with a rectilinear lens on a full frame camera and still achieve good corner sharpness.  


Attached File  RS15_am-14534.jpg   369.19KB   20 downloads


This was taken at ISO 2000, f/4.5, 1/320th. A fast shutter speed is essential to keep fast moving dolphins sharp. Although I would have preferred to be shooting at about 1/500th, the very low light levels meant compromising a bit. It was therefore beneficial to be able to shoot with an open aperture to maintain corners.



In Topic: Rectilinear wide angle lens on FX & behind Subal glass

17 June 2015 - 11:53 PM

I have been asked to shoot some Photogammetry sections of vehicles in the Thistlegorm next week, that no longer exist on land - for model builders to make more accurate models. 


I am going to use the 20mm Nikon behind my optical corrector port. I realise that is not a big help for the original post - but I think it is the best solution - money/availability no limitation.