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Member Since 20 Jan 2004
Offline Last Active Today, 01:31 AM

Posts I've Made

In Topic: Expose to the right?

Yesterday, 02:37 PM


I think that with newer cameras, ISO is another exposure control, and this really opens up the possibilities with ETTR. Reichman et al were using this technique for landscape photography with cameraS on tripods, which are not really a viable option for underwater shooting. The fact that we can get clean images at ISO 1600 and beyond now means that this is now viable.





Exactly my opinion!


I used to shoot underwater at base ISO, let's say ISO 100. Today, I usually shoot with ISO 400 or higher. That let me get a smaller f-stop (f11 or smaller), a faster shutter speed (1/125 sec or faster), lower flash output (1/4 power or less, which means less backscatter) and faster flash recycle.


When I was recently in Cat Island for the close-up action of the oceanic white tip sharks I thus was able to shoot 5 images per second (to select the best image and throw away the others in the same series...)


And funny was  -after 1 day of shooting-  the other photographers did the same from the second day on....


What a wonderful world!

In Topic: Cat Island (Bahamas): seeking advice

06 May 2015 - 02:06 PM

I will take both of them, the 16-35mm and sigma 15mm and 2 dome ports, namely the small 4" and the larger 9". I think using the sigma with the 4" dome for snorkeling and using the large dome when diving with tanks. let's see how it goes...

Btw I have shaved the sigma's lens hood as well as the sun shade of the 4" dome port; still there is a small remain of black edges visible in the left and right corners in the image. I guess I will have to crop slightly to get rid of the curtains...

In Topic: Great hammerheads of Bimini

18 February 2015 - 01:42 AM

what camera and lens combination did you use? what were generally the camera settings?

Some of the pictures when looking greater than just thumbnails are unsharp. I am asking this not as a critique but will go soon to the bahamas for the closup encounters with the Longimanus (Cat island). thanks

In Topic: Float arms.

29 October 2014 - 12:33 AM

I am using Naticams 60x200mm fibre float arms with positive buoyancy of 235g each. I can recommend these. They also have those 250mm lengths with a lift of 350 grams.









In Topic: Am I going soft: Nikkor 16-35mm

14 September 2014 - 11:15 PM

I have a similar setup with a D4s, Subal 90mm extension ring, a +2 diopter but a 9" dome port (DP-230). As you can see in this image the left corner side is still not fully sharp, but acceptable.

shot with 16-35mm @16mm, f9, 1/80sec, ISO 800. I have read somewhere, that this lens is sharper at around 20mm and not so sharp at 16mm.


Attached File  1408_Cocos.jpg   144.42KB   19 downloads