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Walt Stearns

Member Since 08 Apr 2005
Offline Last Active Today, 02:52 PM

#400769 Computers for video editing

Posted by Walt Stearns on Yesterday, 02:51 PM

Blackmagic Design has a new Blackmagic eGPU Pro model featuring a Radeon RX Vega 56 graphics processor with 8GB of HBM2 memory coming. The Pro model is intended to be a workstation-class graphics performance enhancer for any Thunderbolt 3–enabled MacBook Pro and iMac as well as the new Mac Mini.

#398541 D500 vs D850?

Posted by Walt Stearns on 21 August 2018 - 05:38 AM

Right on TimG! In world of underwater photography, top shelf camera systems is seldom a case of I got to have it for the work I do, but in all actuality case of I gotta have it because, because I really desire having one. In technical diving, see pretty much the same play out on rebreathers. Very few divers actually need these expensive pieces of equipment, but it hasn’t stopped many from jumping into it. Bottom line, it’s all a matter of what floats your boat. Like you said, if your happy with what you have at the end of the day, then you have what you need.

#398539 D500 vs D850?

Posted by Walt Stearns on 21 August 2018 - 05:07 AM

D500 vs D850, DX vs. FX, the justifications and arguments always play out the same.
The true question is what you need all those pixels for from your camera.

Is it for making prints for the wall?

If truth be known, most of todays digital printers used by facilities that turn the image captured by your digital camera is printed at 90 ppi. Translated, an image from a Nikon D500, which produces a 5568 x 3712 size image at 300 ppi, will render a print (working with the printers full resolution) approximately 61 inches wide by 41 inches tall. For entertainment, even if a printer having a tighter pixel pattern of say 110 ppi will still render a 53.5 x 33.5 inch size print.

If you are in the business of making gallery wall prints larger than 5 feet across, than yes, more pixels are going to be desired.

Image usage in print publications like magazine, catalogs and brochures.

In the golden age of print magazine publication, the gold standard for an image to grace a cover or a two page spread needed to meet 300 dpi (240 dpi) resolving capabilities to work. Having worked directly on the creation (from conceptual layout to press) of multiple print ads for magazine publications, brochures, as well as a few catalogs with more than 80 to 90 pages each, I can tell you no commercial printer I know of is printing with even 240 dpi. More like the same used for creating your wall print, often times less than even that.


Most websites image area is 690 to 1024 pixels wide with a resolution of 72 to 73.58 ppi. For example, this image here (see below) only holds an image space of 600 wide x 400 pixels high with a resolution of 73 ppi.

If I were still shooting more topside commercial photography than I am now, oh yes I would be all over the D850. Namely because I know how art directors think more is better, even if the image itself doesnt really have it in the artistic/composition category.

The truth of the matter is not so much of a question as to what you need, but what you really feel you need to have.

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#395886 Nikon 8-15mm in the house!

Posted by Walt Stearns on 31 May 2018 - 07:11 AM

So far, I have been getting really good results with the Nikon AF-S Fisheye NIKKOR 8-15mm f/3.5-4.5E ED Lens mated with a Kenko 1.4X Pro 300 Teleconverter, which essentially turns it into a 11-21mm fisheye zoom on my D500 body.  In addition to having the sharpness slightly better than the Tokina 10-17, I am seeing far less CA in the images than what I would typically see when using the 10-17.


Currently I favor using it with the Nauticam 180mm dome port with a 30mm extension ring, as well as my newly acquired Nauticam 140mm dome port with a 50mm Nauticam Extension ring. To get the lens to work with the 1.4X Teleconverter I strangely enough found that I could make one of Nauticam’s Focus gears for the Canon EF 100mm f2.8 Macro lens to work – with a slight amount of manipulation to the plastic insert ring for it. 


Here is an image from Cayman Brac shot with the lens zoom out at 11mm, 8mm if you go by the zoom ring marks from behind the Nauticam 180mm dome port with a 30mm extension ring. Exposure values: 1/180 s at f/9.5, ISO 400.


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#392132 air travel with strobes (air pressure effects)

Posted by Walt Stearns on 07 February 2018 - 10:44 AM

I all the years (36+) of air travel, with the highest amount during the 1990’s where I was traveling as often as twice amount for magazines, I never gave a second thought high altitude pressure changes might have on my strobes in the belly of a passenger jet. And I have traveled with a few, Subsea, Oceanic’s, Ikelite’s, Sea&Sea’s, MCD’s, etc. and never have had appear to a affected buy the journey. As for batteries, especially my Seas & Sea’s, my only trouble there was not have airport security on occasion not understanding what they were, to more recently convincing them that they are NiMh and not Lithium.

#379254 FS: Nauticam NA-7DMKII Housing and Canon 7D Mark II Camera Body

Posted by Walt Stearns on 30 November 2016 - 02:44 PM

Sold! Going to Shelly in the land down under.

#375954 Anyone willing to sell full res photo of game fish from Florida or Bahamas

Posted by Walt Stearns on 10 August 2016 - 03:09 AM

I may have what you are looking for as I do have a very extensive collection of images - goliath groupers, sharks, wrecks, reefs, sea turtles, Tarpon, Permit, etc. from Palm Beach County from Jupiter down to Boca Raton.  It will help if I know some of the specifics like size of the print you are looking to have made, number and subject.

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#370959 Thoughts on the Sony A7ii / A7rii

Posted by Walt Stearns on 29 February 2016 - 04:38 AM

Mark, what is your impression/experience in regards to battery life underwater between the two systems. My understanding the battery in the A7R II tends to peter out halfway through the second dive when shooting stills, even faster when shooting video. 

#356276 Your Favourite/Best Image of 2014

Posted by Walt Stearns on 04 January 2015 - 02:15 PM

Another of mine for the year is this greater hammerhead shot in the same place (different month) as the Blue Fin Tuna.

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#356227 Your Favourite/Best Image of 2014

Posted by Walt Stearns on 03 January 2015 - 08:08 AM

Between what I have shot both here in Palm Beach Florida (sharks, sea turtles and goliath groupers) and the Philippines, picking my favorite was tough. The one I at the top of the list (not for composition or camera technique, but rather for shear luck) is this one in a lifetime encounter with a lone 500 lb. Blue Fin Tuna that made a surprise visit last fall off Jupiter, Florida.


Canon 7D, Tokina 10-17 (@17mm), Subal CD7 housing, two Sea&Sea YS-250 strobes.

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#353713 Bait Balls and Packs of Goliath Groupers

Posted by Walt Stearns on 25 October 2014 - 12:56 PM

The bait formations are due to a couple factors. Basically the small fish (scab or cigar minnows) are there to feed onthe eggs when the goliath spawn, while at the same time other predators, mostly jacks and few rainbow runners will feed on the small fish. To exscape the jacks, the small fish will ball up around the goliaths, and yes the goliahs do eat some of them from time to time.

#341335 Goliath grouper under fire again!

Posted by Walt Stearns on 02 January 2014 - 12:06 PM

Goliath grouper are the subject of strong opinions and divided emotions. Divers love to see these mammoth fish; underwater hunters denounce them as competitors, or covet them as outsized trophies; fishermen are just itching for a policy change that allows harvest; and regulatory bodies seem constantly poised to rescind long-term protection in favor of short-term exploitation.


Opinions abound, and the rhetoric can get heated when interest groups clash. But when cooler heads prevail, the facts emerge, and paint a picture of a species that has come back from the brink, but is still very much in need of our protection. This 7th – 9th members and staff from the Gulf of Mexico Fishery Management Council, the South Atlantic Management Council and the Florida Fish and Wildlife Conservation Commission will meet at the Key Largo Hilton in a open session to consider reopening the Goliath grouper fishery.


I have put together a very detailed feature in the latest issue (UWJ-issue_31) of the Underwater Journal that you should read if you are considering attending this meeting (the big day is the 8th), or act through petitions (http://petitions.mov...fb&r_by=9731813) and Social Media like facebook, it will help to read this story.



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#323133 Favourite Image Of 2012

Posted by Walt Stearns on 22 December 2012 - 03:14 PM

One of my favorites from latest summer's Goliath grouper spawning aggregation off Jupiter Florida.

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#322945 PADI goes solo

Posted by Walt Stearns on 19 December 2012 - 06:02 AM

As a SDI/TDI Instructor, all I have to say is that Self Reliant Diver Course is for better words the appropriate description/title for what the course entails be it SDI/TDI, SSI or now PADI. No matter whether you are in the water alone, with a buddy, or even surrounded by 20 other divers, you are still better off with the knowledge gained through proper training in how to be more self reliant.

Day in, day out, the first person you can rely most on is yourself.

#322799 Near Death Experience - youtube Video

Posted by Walt Stearns on 16 December 2012 - 06:26 AM

I am glad to hear you made it out O.K., but am also shocked about your decision to venture into a cave at Vortex Spring as you did.
This is not a question about solo diving, or that much on carrying the type of redundancy outlined for solo diving. This is an issue of diving in a overhead environment.

The majority of divers who die in the cave systems are not certified cave divers, but recreational divers venturing beyond what they are trained for.

Most recreational divers, as you have I am sure, like to go into the cavern portion of a cave. To clarify, a cavern is typically a larger, more open portion of a cave passage where the exit point is clearly visible - due to ambient light coming in through the entrance. When cavern diving, at no time in the dive should the exit no longer be clearly visible from the diver. Once you reach a penetration point where that is no longer the case, you are now in a cave environment. This same rule very much applies to cavern environments when surface clarity is so badly compromised from silt, mud or tannin in the water that sunlight penetration is blocked out (as I was able to see in your video), meaning you where well beyond a point you should have been.

Count your self very lucky my friend, for doing something very stupid.

I apologize for being coarse in my statement, but want to be sure that my point is understood.