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Member Since 27 Dec 2012
Offline Last Active Mar 16 2015 08:07 AM

Posts I've Made

In Topic: Wide angle with GH4 and 14-42mm PZ lens

24 February 2015 - 01:47 PM

It is certainly not cheap, together with the SD cage I payed the same as the camera cost. However, the hero4 black I have delivers much better video than my Oly E-PL5,  that's why I went gopro for videos. The system cost is still quite cheaper than e.g an LX100. Later I might put 2 cams together for a 3D system - this is a mission impossible with the larger cameras because of the large interaxial.



The G140 is a very expensive of port, you must be a very dedicated goPro user to invest in that kind of accessories. The 14-42mm PZ can accept wet wide angle lens and up to 110 degree. For the price of goPro and the G140, doesn't it make more sense to pay a bit more to get a 8mm lens instead and it's more future proof?

In Topic: Wide angle with GH4 and 14-42mm PZ lens

21 February 2015 - 02:57 AM

On land it is 140° AFAIK, but the flat port kills it as well as the corner IQ. Actually doing more research I ended up buying the g140, unpacked it yesterday. At first look it appears to have an aspheric element, which is key for good IQ across the entire frame and which is missing from all "cheap" solutions (domes, simple air lenses such as the meikon wide wet lens). I'll come back with tests as soon as I receive the compatible dive housing and can lay my hands on some waterproof iso resolution charts.

In Topic: Wide angle with GH4 and 14-42mm PZ lens

31 January 2015 - 04:58 PM

Underwater the Gopro doesn't have more than ~94° squeezed FOV, flat port issue:(. Actually I am looking for a cheaper alternative of the UFL-G140.

4K video is consider a "premium" right now, except for the LX100. I prefer 4K over 1080p mainly because of the flexibility of cropping, down sampling to reduce noise, but not at $5000 price tag with GH4. I don't know what the FOV of the 8mm fisheye lens would be once it's behind the dome. I haven't encounter manta ray, whale shark or anything that size so I don't even know if the 8mm lens would be enough. But I'm quite happy with the Opteka .4x. for general size like turtle and shark.


I recently just acquire the 72mm version Opteka .3x (http://opteka.com/OPTSCFE.aspx). It could work underwater and if that's the case, I should be able to get more wide field of view.


Another option is use the goPro Hero4 as a supplement, so if you need really wide angle (more than 100degree), use the goPro instead. Since it will be close distance, there may not be the need of white balance as long as the ambient light is sufficient, or there is enough video light.

In Topic: GoPro dome port or wet lenses - any experience?

30 January 2015 - 04:32 AM

Thanks, error corrected + updated the post  :notworthy: