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JohnnyQuest

Member Since 14 Jul 2005
Offline Last Active Aug 10 2018 02:05 PM
*****

Posts I've Made

In Topic: De-coding the e-TTL from Canon

21 July 2018 - 05:42 AM

I have this:

https://uwtechnics.c...housings-detail

 

Designed by Pavel who is very active here (and is a great source of information). It works great with my 5D mk4 and my S&S YS-D1 strobes. I believe that Turtle also has a unit available now too, but you don't get Pavel's invaluable help with the Turtle.


In Topic: Nauticam Flash Trigger for Canon (26301)

19 June 2018 - 05:06 PM

Thank. I PMed you back but I didn't see how to post photos there so I put them here:


In Topic: Reflective prism for flash trigger

22 April 2018 - 04:21 PM

Nauticam makes an optical trigger that sits on the hotshot and just fires the flash straight ahead. Since it doesn't have little LEDs that connect right to the optical bulkheads, you need to use the prism to redirect that straight ahead light, upward. The prism reflects the light up into the bulkheads. If you use a trigger that has the little LEDS you need to remove the prism and put the LEDs directly into the bulkheads. I have a Nauticam housing, but I'm using the UWTechnics TTL trigger so I removed the prism.

 

If you download the user's manual here, it will tell you about removing the prism http://uwtechnics.co...housings-detail


In Topic: Fisheye and wide angle advice

08 December 2017 - 10:31 AM

Because the Canon is more expensive!!  :)

 

I read a couple of reviews between the two that say that the Canon is a bit sharper. That may be imaginary, and even if so, it's probably negligible. Actually, since I plan on using it with the 1.4TC, the zoom function of the Canon should come in handy. That's really the only reason.

 

Plus I found my 8-15 used for about the price of the 15 new.


In Topic: Fisheye and wide angle advice

08 December 2017 - 09:25 AM

At any focal length < 14mm, you'll start to see black at the corners. You could shoot there, but you'd have to crop the shot afterwards.

 

This link shows how the image will look at various focal lengths:

https://www.the-digi...sheye-Lens.aspx

 

I believe that with the 1.4TC, you will have a useful range of about 15 - 21 before you'd see the black corners.