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Tom_Kline

Member Since 07 Nov 2004
Offline Last Active Yesterday, 10:41 PM
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Posts I've Made

In Topic: Any one using the Canon 24-70 f4L? Have questions!

22 August 2016 - 09:38 AM

I have used the Canon 24-70/4  lens under water. I used it for many of the underwater shots taken this year in Hawaii that are on my website. I used a Seacam Compact Port. It may have a radius that is the same as an 8" hemispherical dome but do now know for sure. I used the lens with a Canon 500D achromatic diopter to focus closer than the minimum focus distance. I had to apply lens correction in post to fix a bit of vignetting. The macro feature is useless in a housing.


In Topic: new 28mm macro canon or 60 macro venus or 6o macro canon

11 August 2016 - 11:15 AM

The new Canon 28mm macro lens with the ring flash is an EF-M lens, designed for the EOS-M mirrorless cameras. The 60mm EF-S macro lens is quite popular among Canon APS shooters. Do not have one myself so cannot comment. I would recommend an AF lens over a MF lens like the Venus. You can still MF the Canon lens but will need a focusing gear, also for the Venus lens. I seem to recall that the Venus lens has a manual diaphragm - you should check on this. A manual diaphragm is going to be particularly challenging to use under water if even possible as you will need a control gear for this as well.


In Topic: Pole cams for wary critters

28 July 2016 - 10:17 PM

I have made several postings here. As well you can see a few videos on my website that show my setups in action. I am using Seacam equipment. Main things you will have to figure out for your housing is how to attach the pole and how you will integrate remote control.


In Topic: Taking a Poll.. How many of you Check your Rig vs. Carry On?

22 July 2016 - 06:12 PM

I carry my housing, accessories and camera on board. I took the attached shots while at the Big Island this spring. I used the 1DX camera to take these pix so is not visible inside the housing. I used this f.64 brand bag. It is several years old, has been on several trips and thus shows some wear. The stuff you see on the floor in the open bag shot went into nooks and crannies. No space was wasted - the 100mm macro lens in a soft bag fit inside the stacked port extension tubes. A very short flat port is on the housing. The cover has pockets for small accessories, batteries, and spare O-rings. The external strap with fastex buckle is to make sure it does not blow up. I wore the watch ;->


In Topic: What special about underwater strobes?

22 July 2016 - 05:40 PM

I'm familiar with strobes used on land but wondering if there are any major difference besides being waterproof that I need to take into account for shooting underwater.

 

Basically I'm wondering if I took normal Nikon flashes and put them in a waterproof case and synced them to my SLR, would I still get great photo's? Thanks in advance.

 

Some purpose built underwater strobes have very wide angle coverage such as > 100 degrees.  For example I have been able to use a single strobe with a fisheye lens. Many purpose built underwater strobes also have a warm color temperature. Whereas many of the wide angle underwater strobes are medium to large sized (more recent strobes though are a bit smaller than those from the film era!) those intended mainly for macro use can be quite compact. Another advantage is that adjustments are accessible under water with simplified controls.

 

You should be able to take "great" photos with a housed strobe but you need to be aware of limitations such as output intensity, coverage, color temperature.

Tom