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bvanant

Member Since 01 Apr 2002
Offline Last Active Today, 10:01 AM
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#354429 Zeiss Touit 2.8/50M for Sony E-Mount

Posted by bvanant on 17 November 2014 - 04:16 PM

Yes indeed I did mean the Zeiss 50 (is there a 60?) :lightbulb: In any case, I do have the pre-AF off and it is still quite slow to focus. I would manual focus but then everything would be blurry 

Bill




#354368 60mm VS 100mm DOF

Posted by bvanant on 15 November 2014 - 01:02 PM

For me, my go to lens on DSLR was always the 60 mm with a 1.4 teleconverter.  That being said in u4/3 I now use either the Oly 60 or the Panasonic 45 for macro stuff.

 

Bill




#353857 Missing C-Clip in Nauticam NA-EM5 housing. How to replace?

Posted by bvanant on 29 October 2014 - 10:48 AM

You can get c-clips from McMaster Carr, but I would call Scott at Bluewater and see if he has one or at least tell you what size it should be. On my EM-1 housing, the fn1 shaft is 2 mm diameter and the total width is 3.9 mm suggesting that the correct c-clip is 

98543A070
 

 from mcmaster. You can get 50 for $9, my guess is that it would cost you that much to ship the one from Reef.

Bill




#353681 WTB - Inon Fiber Optic Cable - parts or whole

Posted by bvanant on 24 October 2014 - 05:49 PM

Just buy the adapter from Inon-Sea &sea from Divervision and some optical cable from "thefiberopticsstore.com and you will be good to go.

Bill




#353654 Lens choices for a MFT system

Posted by bvanant on 24 October 2014 - 12:19 AM

The 12-50 is moderately wide and moderately macro. The nauticam port lets you switch;

Bill




#353443 F'n Stop - big rookie mistake

Posted by bvanant on 17 October 2014 - 11:40 PM

On the back of my 7d housing is a label that says "flash up?"
Bill


#352444 People Magazine

Posted by bvanant on 08 September 2014 - 05:06 PM

This week's People Magazine (Sharon Tate on the cover) had a blurb in things to watch that highlighted DiveFilm HD and the Secret World of Sea Slugs in particular. That video is coincidentally by my wife and Wetpixel member Nannette Van Antwerp. You can see it at dive film HD or at

http://www.blueviews...s13_640x360.mov

 

Enjoy

 

Bill




#351767 Help! Nauticam lubricant for blue S&S o-ring?

Posted by bvanant on 19 August 2014 - 08:04 AM

That is why I use Tribolube 71. Christolube in my hands at least stays "wet" for more than 6 months but it does dry out in a year, so far Tribolube hasn't dried in over 15 months.
Bill




#351635 How to shoot like Japanese UW photographer?

Posted by bvanant on 16 August 2014 - 08:49 AM

I think Bokeh is not the appropriate idea here. Bokeh is a characteristic of a lens (not a style). You can shoot shallow depth of field with any lens/camera that will allow it, but as far as I understand it Bokeh means the "pleasingness" of the out of focus areas and has a lot to do with lens design and some magic thrown into it. For a look at how to measure bokeh, take a look at 

http://photo.net/nik...ra-forum/00aDI7

:clapping:

Bill




#350009 TTL, a-TTl, e-TTl, e-TTL II

Posted by bvanant on 08 July 2014 - 07:56 AM

There is a lot of confusion about the whole TTL universe. As far as I understand it (about 2 cm worth) eTTL is Canon's proprietary TTL system that lets Canon cameras talk to Canon strobes. iTTL is Nikon's version of the same. If you are shooting a Canon camera and using a housed Canon strobe then eTTL works fine (if you have the right electrical connections). Same for Nikon.  Neither Canon nor Nikon have published their TTL protocols (they want you to buy their stuff) but several folk have figured out how to emulate Canon and Nikon TTL protocols. If you use electrical sync then there are converters (Weikamp, S&S, Ike) that plug into your cable/hot shoe) and allow you to get TTL functionality from strobes that can speak that version of TTL. If you are using optically fired strobes then you need to emulate TTL (sTTL) for example. This typically works by sending a pre flash from the strobe to the subject then calculating the correct exposure then exposing the scene with the correct strobe duration. 

Hope this helps

Bill


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#346987 Lens for mid-size animal portraits on 5D3

Posted by bvanant on 29 April 2014 - 07:40 AM

Why not the 16-35? It is pricey but a great lens.

Bill




#346623 Ikelite Canon 100D / Rebel SL1 : review ?

Posted by bvanant on 22 April 2014 - 04:01 PM

We are also working on a fiber optic connection. We are waiting for the new ikelite manta strobe so we can design around that item. 

Why wait, the Manta has been pushed back enough times to warrant support for the S&S and Inon folk. I haven't bought one yet (to shoot macro only) only due to the sync cord issue.

Bill




#346606 Best printing techniques

Posted by bvanant on 22 April 2014 - 07:59 AM

what do you mean by very large and what do you mean by printing on glass. At Glasstec there were several companies that make printers for glass but pricing is ridiculous and  mounting can be very problematical. Prints on Aluminum are great, and I can recommend Bay. 40x80 from them are about $700 or so. 

For our use at LAUPS, we print on metallic paper (great look) and frame behind glass. Highlights are indeed an issue but colors are really cool and you can get really big prints if you have the right printer.

Bill




#346604 Super Macro

Posted by bvanant on 22 April 2014 - 07:42 AM

5 mm full frame is quite small.  For the EM-1 camera with a sensor that is 18 mm wide that would mean almost 4 x magnification to get the job done. With the 60 mm lens that would mean with a +10 subsee you have a 2.7 magnification which is still not enough magnification for 5mm full scale. Of course you can crop. 

Bill




#345326 corrosion on Solo lights

Posted by bvanant on 30 March 2014 - 12:34 PM

I think that L&M decided to not put any type of capacitor in the charging circuit at least on the early versions, and both terminals have major corrosion on some of my lights. On the L&M page they say

How to remove contact corrosion:

You can make our own cleaning solution by mixing a few drops of 25% vinegar / 75% water. With a small amount of this mixture and small piece of fine steel wool, you can gently remove corrosion and get these battery contacts shining like new!

What is the best way to dry my Sola?

After you have rinsed thoroughly, it is also extremely helpful to dry the light off. Residual water droplets can lurk inside the small space of the charge contacts and cause corrosion.

 

Bill