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Spinner

Member Since 19 Mar 2002
Offline Last Active Apr 09 2009 07:01 PM
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Topics I've Started

Anilao or Puerto Galera, Phillipines?

31 January 2005 - 12:22 AM

I'm doing a quick 4 day trip over Easter - from Hong Kong (where I'm based), Anilao and Puerto Galera in the Phillipines come up as quick, easy getaways.

I've been to PG before, and found the divesites pleasant, but nothing terribly memorable other than the pygmy seahorses. Has anyone been to Anilao (or both Anilao and PG)? Any other short trips to recommend from Hong Kong?

Thanks,
Ben

Zoom lenses underwater (Ikelite 20D housing)

18 December 2004 - 09:00 AM

Latest in a series of newbie type questions...I've never used zoom lenses underwater before and am a bit confused now with my new Ikelite housing.

For my Tamron 28-75mm XRLD Di lens, the Ikelite website suggested the 5503.80 dome. But I've found that once it's installed, I can't zoom in all the way to 75mm, because the lens bumps into the dome at about 60mm. Did I order the wrong port? Or is it simply because no port can accomodate the entire focal range?

If I didn't order the wrong one, is this because the nodal point of a zoom lens changes with focal length setting, and thus it's difficult/impossible for any single dome to be compatible with the entire focal range of the zoom lens? I.e., is the recommended dome port simply the best possible compromise for any given zoom lens?

Which leads to the question: At what focal length will I not achieve sharp images? Can I zoom in until the lens hits the dome and still get reasonably sharp images?

Coming from a different angle, what would happen if I house my kit 18-55 lens behind a port that's longer than optimal (i.e. one for a 10-22, the 5503.50)?


It's all a little blurry right now... :D

Thanks!
Ben

+4 diopter - where to get one?

17 December 2004 - 02:20 AM

Stupid question, but where can I get a +4 diopter as recommended on Ikelite's site? This is for a Tamron 28-75 mm XR LD Di (whew!) behind a Ikelite #5503.80 dome port.

"Zoom Lenses usually require addition of a +4 diopter close-up to the lens for full range operation underwater behind a dome port."

I've never used a zoom lens underwater before, so have never even seen or touched a diopter. Does it screw in like a filter? Are they lens diameter specific? Are there differences between different brands? Who the heck makes them anyway?

Any help is appreciated!

Thanks,
Ben

Thanks Ike! New 20D housing has arrived...!

15 December 2004 - 06:50 PM

Christmas has arrived a few weeks early in Hong Kong...many thanks to Ike for rushing a new 20D housing to me in time for my trip to Irian Jaya!!!

As everyone else has ranted and raved about, Ikelite's customer support is fantastic.

The housing has arrived at the dive shop, and I'm picking it up in a few hours. Now when is that 10-22 EF-S going to arrive?!?!? :?


Ben

20D in Ikelite housing + DS125 + Canon 10-22 EFS + Tamron 28-75 XR LD. And a Nik V of course...not giving that yet for a while.

Top notch Nexus/N90s setup for sale (see classified section)...need to raise some cash to pay Ike's bill!

Complete Nexus setup: N90s + 20mm + 60 mm + 2 ports

13 December 2004 - 08:19 PM

Just got married to a Canon shooter, and since she's got more gear than me, I'm selling my Nikon setup. :wink: (Keeping my Nik V though...)

The setup includes:

1) Nexus Master housing for N90s/F90x. Excellent condition, except for a few scratches on the back of the housing.

2) Nexus WP5 dome port for 20mm - Not a scratch, perfect, as new condition.

3) Nexus MP60-5 flat port for 60mm - Not a scratch, perfect, as new condition.

4) N90s body - mechanically perfect, cosmetically a 7/10 as the rubber coating on the back is peeling off (a common, purely cosmetic problem)

5) Nikon 20 mm f 2.8 AF-D - Not a blemish, perfect, as new condition.

6) Nikon 60 mm f 2.8 micro AF-D - Not a blemish, perfect, as new condition.

7) Miscellaneous Nikon lens caps, body cap, Nikon L37C UV/haze filter, Nexus caps for the housing and ports.

All for $2100 - I'm open to offers. A great setup, fantastic condition, less than a year old.

Please email me at ben_kao@yahoo.com. Please see also see the listing under http://www.wetpixel....63-de-144.phtml.