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Author Topic: Underwater Wet Lens Test  (Read 14798 times)

Alvin Ho

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Re: Underwater Wet Lens Test
« Reply #20 on: 05 Aug 11, 16:39 »
yes i used AI Servo.. but cant even get AF confirm. haha so i gave up. MF! faster too. dont have to deal with the lens hunting back and forth

Hmmmm ok leh all along i used it. just a matter of getting used to the sweet spot, rock a bit back and forth no issues.

Canon 5D MK III
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Sony A7R2, A6300 Sony 90mm Macro, Nauticam Housing
Inon Z-240 Strobes, Weefine Video lights, FIT Focus lights

Alvin Ho

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Re: Underwater Wet Lens Test
« Reply #21 on: 05 Aug 11, 16:40 »
Canon 5D MK III
Canon 100mm L Macro, Canon 16-35mm L, Canon 8-15mm FE, Nexus Housing
Sony A7R2, A6300 Sony 90mm Macro, Nauticam Housing
Inon Z-240 Strobes, Weefine Video lights, FIT Focus lights

antacid

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Re: Underwater Wet Lens Test
« Reply #22 on: 09 Aug 11, 23:03 »
think the subsee +10 still more powderful. not much magnification from the FIT.

Alvin Ho

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Re: Underwater Wet Lens Test
« Reply #23 on: 09 Aug 11, 23:41 »
think the subsee +10 still more powderful. not much magnification from the FIT.

but cannot stack except with those blardy expensive 3rd party adaptors. oh well maybe will stack the +5's behind the subsee this weekend and see how it goes.
Canon 5D MK III
Canon 100mm L Macro, Canon 16-35mm L, Canon 8-15mm FE, Nexus Housing
Sony A7R2, A6300 Sony 90mm Macro, Nauticam Housing
Inon Z-240 Strobes, Weefine Video lights, FIT Focus lights

antacid

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Re: Underwater Wet Lens Test
« Reply #24 on: 10 Aug 11, 22:05 »

Wodepigu

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Re: Underwater Wet Lens Test
« Reply #25 on: 10 Aug 11, 22:21 »
There was a comment that says that the  +16 is only in air and when in water it becomes more a +5.... anybody here know what Slipperydick as talking about?

Alvin Ho

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Re: Underwater Wet Lens Test
« Reply #26 on: 10 Aug 11, 22:34 »
There was a comment that says that the  +16 is only in air and when in water it becomes more a +5.... anybody here know what Slipperydick as talking about?

it's the different refraction properties of air and water. the +16 is rated in air and loses it's 'power' when in water. the +16 and other similarly constructed lens have 2 elements with air sealed in between. A 'true' underwater +10 or +5 like the subsee and macromate have 4 elements i believe which means the lens does not lose it's power underwater. It's the same power on land and underwater.

Slipperdick aka keri wilk's explanation is pretty clear. why not post there for further explanation if you need?
Canon 5D MK III
Canon 100mm L Macro, Canon 16-35mm L, Canon 8-15mm FE, Nexus Housing
Sony A7R2, A6300 Sony 90mm Macro, Nauticam Housing
Inon Z-240 Strobes, Weefine Video lights, FIT Focus lights

antacid

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Re: Underwater Wet Lens Test
« Reply #27 on: 10 Aug 11, 23:54 »
the main difference is that the subsee is a sealed lens, where the curved surfaces of the lens do not come into contact with water.

the other diopters are not sealed, hence the actual refracting lenses  are in contact with the water.

OK, i just realised that my pic wouldn't be a fair comparison because i was using a 100mm lens where the comparison pic in the article was with a 60mm.

Ahken

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Re: Underwater Wet Lens Test
« Reply #28 on: 26 Aug 11, 19:02 »
Hi Antacid,
Can i use the subsee +10 on a 60mm lens?Im using sea gadget +5 but no satisfy with the result
Understand that with 60mm,the working distance is very close.Please advise,thanks

antacid

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Re: Underwater Wet Lens Test
« Reply #29 on: 28 Aug 11, 22:23 »
yes you can. i just used it with the 60mm. the downside is that you get a little less magnification compared to using the 100mm. with the subsee you have to be really close to get max magnification. probably almost touching the subject