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guyharrisonphoto

Member Since 15 Jun 2011
Offline Last Active Today, 04:50 AM
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Posts I've Made

In Topic: Mounting both Keldan's and strobes

22 March 2017 - 06:09 AM

If you are using Nauticam clamps, they offer a version called a multi-purpose clamp, that has a place to insert a 1" ballt, so as to allow the mounting of a second light next to the strobe, or, if you want to separate them, you can use the multi-purpose clamp with the ball as the middle clamp between the two arms, so the video light will be at the joint between the arms and the strobe at the end of the arms.  Check it out on the Nauticam website.

 

Or, and I did this with my pair of YS-01s and Sola 4000s, you can put a ULCS triple clamp at the end of your arms, and mount both the strobe and light right next to each other.  The length of the ball mount on the strobes/lights allowed plenty of clearance but still placed them right together in an over/under configuration.  I put the video lights on top.  That way, when you are shooting stills and position the strobes, and want to switch to video, the video lights are already in the same position.  Also vice versa.  I found this very easy and fast to use underwater.  Above water, having all that weight at the end of the arms made handling a little tricky, but the clamps could tighten down enough to prevent excessive movement.  By the way, you can also use the triple clamp as the center clamp if you want to have the video light on the center clamp.

 

If you google nauticam multi purpose arms and pick "images" you will see photos of the set-ups with the video lights on the center clamp and strobes at the end, and also images with both on the end clamp.  You can easily visualize the same set up with the ULCS triple clamp.

 

Personally, I found the ULCS triple clamp a more compact, elegant and simple solution.


In Topic: Laowa 7.5mm f2 - Thoughts?

18 March 2017 - 10:47 AM

Then your choice is single focal length fisheye, or rectilinear zoom.  If you are just starting out, I would go with the zoom.  It gives a more natural perspective and is easier to learn with than the fisheye, which is a much more specialized tool.  Also, the zoom would even allow you to get moderate fish portraits and other perspectives that you would not easily get with the fisheye.  The Laowa is rectilinear ultra-wide (weitwinkel), but still not as wide as the zoom would be.


In Topic: Laowa 7.5mm f2 - Thoughts?

17 March 2017 - 08:06 AM

I don't see any reason to choose this lens over the 7-14.  Why give up the versatility of the zoom?  Why give up autofocus?  Why give up auto exposure? (it has a  manual aperture ring).


In Topic: Anilao lens choice

16 March 2017 - 09:33 AM

I went back and saw from my photos that it was 2010 when I was there.  They were a huge swirling tornado.  Spent half of my dive just drifting through them.

 

Too bad . . . 


In Topic: Need help for a decision 5DIV or E-M1II

15 March 2017 - 10:28 AM

I shoot Nikon FF on land for my nature and landscape work.

 

Underwater, I use M43 (Oly EM-5) with Nauticam, and am getting ready to get the EM1 Mk II.  Several reasons for this.  

 

First and foremost, compactness and light weight.  A fraction of the FF set-ups mainly due to the very lightweight lenses for M43 such as the Oly 12-50, Panasonic 7-14, and Oly 60mm macro.  There is absolutely a huge advantage in weight, bulk, drag, and convenience with the smaller rig.  

 

Second, I travel a lot.  Can pack the whole camera rig and lenses, laptop, all filters, batteries, and accessories, in the "personal item" size bag with room left over for dive computers and dive lights, and the entire UW rig (housing with angled viewfinder, dome, macro port, tray, arms, 2x strobes, 2x video lights, all accessories) into a carry-on size roller bag or backpack.  

 

Third, I shoot pretty much equally photo and video.  For this, mirrorless (not necessarily M43) is unequalled and far superior than trying to shoot clunky DSLR video squinting at the small screen, switching back and forth between live view and viewfinder, etc.  The angled viewfinder on my housing (this is an essential accessory well worth the money) gives a huge and sharp view of the LCD viewfinder of the camera for easy photo and video, and switching between photo and video is an instant push of a button with no need to even take my eye off the subject when things are moving fast.

 

 Fourth, the IBIS of the Oly (even the original EM5) is stupendous for macro photos and especially macro video and the new EM1 ii will be even better.  It is hard to overstate how useful this is.

 

Fifth, the lightweight rig makes the perfect travel set-up.  I can add the pany 100-400 zoom (200-800 field of view in full frame terms) and have nature covered on any trip.  That lens is so small it is ridiculous for the magnification delivered.

 

Sixth, no built in flash on the 5DIV, so no  TTL optical flash with strobes and the need for more housing penetrations and o-ring sealed electronic sync cables. This is a disadvantage (but could be offset if you get something with a built in flash).

 

Image quality is excellent, easily printable to 20x30.  ISO is very good up to 1600.  AF is superb if the light is good, either daylight or a focus light for macro, and is still useable even in marginal light.

 

In sum, I don't think you really gain anything with full frame (higher useable ISO, and some more resolution) that comes even close to what you gain with the smaller mirrorless system.