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Member Since 20 Feb 2006
Offline Last Active May 07 2016 02:15 AM

Posts I've Made

In Topic: Nauticam NA-A7II w/a port/lens choices

28 November 2015 - 02:25 AM

I have been using the A7RII with a Sigma 15mm + Metabones IV during a two week dive trip and it has worked flawlessly.

I'm specially impressed by the accurate autofocus and i have rarely used the MF, even in low light conditions.

Since I use the Nauticam mini glass dome, I usually stay above f9 to keep a decent corner sharpness and rather turn up the ISO or use a slow shutter speed.



15mm  f16  1/15  ISO200

In Topic: Metabones Smartadapter IV with Sigma 15mm

26 October 2015 - 12:20 PM


Tobbe, what dome/extension ring combination are you using the Metabones IV + Sigma 15mm with, out of curiosity? This may be the route I go if I choose the A7RII.



I have the Nauticam 37303 A7 II Port Adapter + Nauticam 18810 N120 140mm optical glass fisheye port. That is Nauticams recommendation for the Sigma.

In Topic: Metabones Smartadapter IV with Sigma 15mm

25 October 2015 - 02:02 AM

I just got the Sigma and Metabones IV and upgraded to version v0.45

The autofocus is really really fast together with the A7RII, and I have not experienced any problems with the aperture as described in the Backscatter review.

Manual focus using the focus gear may be an issue. I can switch to manual focus on the camera, but I can´t access the mechanical switch on the lens to release the focus motor (will it be harmed if not released?).

However that has nothing todo with the Sony or Metabones and is probably a common issue for the Sigma 15mm.  

Will take it for a test under water behind the dome next week!

In Topic: Metabones Smartadapter IV with Sigma 15mm

16 October 2015 - 05:59 AM

According to Brian Smiths it seems like it should work with the latest firmware of the Metabones. I hope that it's fast enough,





Sigma 15mm f/2.8 EX DG Diagonal Fisheye Lens for Canon EF

Metabones: Good speed and accurate PDAF AF-C and AF-S with Wide, Center and Flexible Spot
Fotodiox: Manual Focus only – but adapter provides electronic aperture control
Viltrox: Manual Focus only – but adapter provides electronic aperture control

In Topic: Advice on Sony A7R2 lens set up

02 September 2015 - 03:12 AM

The 16-35mm FE looks nice if you want to go WA, but I still wait for a fisheye that can match the Sigma 15mm or Nikon 16mm before considering the A7RII