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The Nikon D300 has some limitations, like its megapixel count (12.6), compared to newer Nikon cameras, but it is still a good, solid camera. I have one that I would like to house as a teaching camera for divers who are interested getting into underwater photography. I'm not aware of any...

Ikelite told me the reason they stopped doing lithium batteries was due to inconsistent lithium component supply issues. The company actually exchanged my lithium battery packs for NiCad packs. Other than getting battery packs wiped-down with drug detection wipes by TSA, I've never had a...

Amron International in Vista, California, sells brand new Conshelf XIVs. As noted in my earlier post, a Supreme model goes for less than $530.00. The difference in the new XIVs and the vintage ones is the finish on the second stage. Vintage have a bright, shiny finish while the new ones have a...

Your price seems pretty high when you can buy a brand new Conshelf XIV Supreme regulator setup for under $530.00. The non-supreme model goes for a bit less. Of course, your asking price is really your business, but just saying... Conshelf XIV are great regulators. I paid $10.00 to $15.00 for...

We had lots of mobulas during a Bahia de los Angeles (Baja side of the gulf west of the Midriff Islands) trip during late-July/early-August last year, but they were really skittish. When we would attempt to enter the water with them they would leave. Our efforts to use stealthy entries didn't...

Local news (Channel 4 Phoenix) just reported that the diver's body has been located, but the Maricopa County Sheriff's is having difficulty with recovery due to depth. -AZTinman

Try the Frenzel Maneuver and see if it works better for you. -AZTinman

Congrats on the camera! I've played with ADOX Silvermax 100 on one of my Guadalupe trips. I pushed the film to 400 and got some very usable negatives, but never bothered to print any. The film is interesting because it has a higher silver base than any of the films on your list. At the time, I...

Nice video! Curious nurse sharks or nurse sharks looking for a handout? I watched a dive master/guide feeding a couple of nurse sharks on one of our dives there in December 2017. My dive master knew which operator's people were doing it. -AZTinman

Wow, Ken! Your segment about giant sea bass was really good. You captured the way Trump's thought process works. Nicely done! -AZTinman

It's an eagle ray not a manta. -AZTinman

The soft cooler bag I use has room for my housed camera with the strobe arms and strobes folded. The bag gives some padded protection for the camera rig as well. I just hand the rig up to the crew after I finish a dive and they just set it on top of the bag. Depending on how long I'll be out of...

Keep in mind, I used a Nikonos II with a 28mm Nikonos lens. I used a Sekonic AUTO-LUMI meter to calculate exposure. If you're looking at purchasing a Nikonos V, be careful with tightening the battery compartment cap. Twist too hard and you can break the compartment. It's important with any...

Based on the work I did with photographing wildlife during my employment with the National Park, Velvia 100 gave excellent results and I've just stuck with it. We did use Velvia 50 when it came out and liked it too. I use a lab in San Clemente, CA, for processing. Turn around time is about a...

I don't use strobes with my Nikonos II and V cameras (yet). The cameras are used occasionally in shallow/clear water situations. I shot a few rolls of Velvia 100 during a trip to Guadalupe a couple of years ago. Velvia can be pushed at 200 and 400. I also experimented with a Silver Max B/W film...

Superia 400 and Porta 400 are color negative films. Those films are probably okay, but I still prefer shooting slide film. Prior to going digital, I spent a lot of years shooting slide film when I worked for the National Park Service. Fuji Velvia became our go to film for wildlife photography...

Well Getto, at least the one engine on Gary's boat wasn't on fire. Was it their red boat? A few years ago, we were on a trip out to Isla San Jorge twenty-nine miles south of Puerto Penasco, Sonora. The trip out to the sea lion rookery on the island had been uneventful. About halfway back, my...

No Sam, the book is about California sea lions. My publishing consultant suggested I add a chapter about the predator-prey relationship between sea lions and white sharks after the recent alleged shark attack in December that killed a commercial Hookah fisherman in the northern gulf. I had...

Thanks for the kind words Dr. Miller! I'm not sure Gene is really in retirement mode. He's always busy around the shop every time I'm in there. Some weeks back, I dropped by and picked his brain concerning white sharks in the Gulf of California. I was doing some quick research for a chapter I...

At 100'-130' water temperatures will be cold in early March. If I owned a dry suit, I'd use it for diving around San Carlos during the winter and spring. The underwater topography drops off pretty quickly into deep submarine canyons around Isla San Pedro Nolasco. About the only reason for diving...