Jump to content


Marsh

Member Since 19 Nov 2011
Offline Last Active Feb 25 2015 02:00 PM
-----

Posts I've Made

In Topic: a6000 lens for underwater + underwater case

25 February 2015 - 02:00 PM

Paul,

 

Thanks for the info. It's always interesting to see how NEX users adjust to the lens situation.

 

Picked up a N7" dome off SB last week for a good price.  When it arrived, I was sort of shocked by how much bigger it is than my 4.33!  Better than those huge 8 & 9" SLR monsters, but still BIG in comparison. At least now, I have both domes to do side by side comparisons for the Z12 and S18-55, especially for corner sharpness. I'm really hoping my Irish luck holds out and I get the same results out of the Z12 and S18-55 in the N4.33; I definitely don't won't to add the N7 to my compact travel rig. Wish I had a Z16-70 to compare with the other lens. 

 

I also wondered how the longer Sony zooms would work, as I know a diver who uses a similar AOV zoom in a Nikon set-up with a diopter and he likes it as a versatile single dive set-up for WA and SM.   While the 18-105 is an internal focus, it's a power zoom, so no way real way to use it and it's width would require a 2 part port set-up. Like you said, the MFD really doesn't work and there's no zoom gears or means to activate such.   

 

Photos released this week by a guy on the web shows the S90FE, side-by side to the C100L, both being almost exactly the same size.  This has increased the odds it might fit in my 2 part Nauticam Canon60 macro port with a 30mm extension.  It's even possible the focus gear will work. Keeping my fingers crossed.

 

Too bad the Z16-70 zoom gear is wider than the mini-port extension ID, as 50mm of extension (which I'll have) is the correct length to put the Z16-70 into my N4.33.  Even if I did get a gear to fit, I have no idea whether this would even work with the dome optics, since the Z16-70 has a pretty long reach.  Sure would be nice to try it though. The S16 works fine with the 4.33, so I'm hoping the Z12 and S18-55 will work better than expected. 

 

I'll be posting some 100% blow-ups of the Z12 and S-18-55 in both domes for comparisons shortly.

 

Cheers,

 

Marshall


In Topic: a6000 lens for underwater + underwater case

08 February 2015 - 09:52 AM

Paul,

 

You might be right on the weight of the lens and MB adapter.  My C60 EF-s port comes with a centering ring that goes on the filter ring to center the lens in the housing and perhaps provide support for the lens length and weight?  As to the Z16-70, I've seen some side by side photo comparisons showing the lowly rated S16-50 being almost or as sharp in the center, even good corners in comparison to the Z16-70. This has sort of slowed me down purchasing it and a larger dome.  Some say the S18-50 is better han 16-50, others say the opposite. Too bad the S16-50 is a motor controlled zoom that collapses each time it's turned off/on.  I might have been able to experiment with it in my 4.33, but no way to use a zoom gear, which I have for my S18-55.  I've been surprised at times how well my S18-55 kit lens renders at times. It seems quite sharp, so maybe I just got a really good copy.  If I can get corner sharpness to work in the 4.33, I'll probably just stick with it, the Z12 and the C60 EF-s until something shakes out on the S90G.

 

Happy diving,

 

Cheers,

 

Marshall


In Topic: a6000 lens for underwater + underwater case

07 February 2015 - 06:34 AM

Hey Pachku,

 

You didn't annoy me in the slightest.  Sometimes these posts don't take or my Mac Safari moves the image to the next page and I lose the text…grrr. I'm learning to C&P more often before posting so I don't have to repeat myself. I love talking about NEX possibilities if you look at the length of my posts. LOL.

 

Hope my Metabones holds up better than yours in my recently obtained C60 EF-s macro port.  The MB adapter I bought with #31 firmware seems to work pretty good, even focuses accurately in AF which I was happy to see. Maybe not very fast, but quicker than I thought it would, at least good enough for slow moving macro subjects.  While I like manual focus, when in current, or the need to stabilize myself using a reef rod, AF is obviously needed to compose and shoot with one hand.   I'd love to have a longer macro like the S90G for APS-C. I like the extra working distance and compositional differences between the lens for the kind of work I do with macro abstractions. I think the S90G will fit the bill nicely and have fast focus, especially compared to the MB set-up. If my Irish luck holds up, it may even miraculously fit into my C60 EF-s 2 part port, perhaps with the addition my 20mm extension, but the odds are a long shot compared to the Zen/S&S, so I'm not holding my breath.  I believe the S90G in a A7 will be the same as using a 60M in APS-C, so no real gain there in working distance, but of course FF is nice, especially if the rumor of Sony's new FE 56MP release to compete with Canon's new 5DS  holds up. 

 

As for the Z16-35, this equates to 24-52 on APS-C. I wouldn't think this would be a very usable range for most UW work; not very wide and not very long for macro using  a diopter.  Then again, we've been using the S30, the S18-55 and now the Z50 for macro so who knows? My guess is Nauticam will make ports for the S90G for both the NEX and FE platforms when it's released. It's just such an important addition to both platforms. 

 

My modified Z12 came in a couple days ago from Germany. It and the S18-55 fit perfectly in the compact 4.33 dome using a 20mm extension.  I'm not sure how or if the "virtual image" works on the surface, but my initial view through the 4.33 port looked fairly sharp. I won't know how the corners fare until I can do some 100% blow-ups and comparisons UW, but they looked good even wide open on the surface. Maybe because the Z12 is such a close focusing lens at 7" from the sensor. I think it will be a great CFWA lens for this reason. Plus, I figured out a way to mount a Nauticam swing mount onto the dome shade wings to have macro and WA with the S18-55 in the 4.33.  This will be a nice travel single dive set-up when I'm not sure which lens to bring down.  The Z16-70 will be a similar set-up, but need a 170mm/7" dome and trying to mount a macro swing on it's wings will be much more difficult.  My copy of the S18-55 is pretty sharp, it focuses quite close and i got decent stuff out of it using Port 72, except for pretty terrible CA in the corners being a flat port. I'm looking forward to the wider AOV and less CA that a dome delivers. 

 

Wish I could dive next week, but the hot tub or the pool will be where I test 4.33 corner sharpness for the time being here in the desert. LOL.

 

Keep me posted on your progress, especially with the Z16-70.  Should you go to the A7 or any new FE releases, let me know first before listing your stuff on eBay or on SB.  I'm still paying for my 1st SLR Canon system, so I'm sticking with my NEX7 for the foreseeable future. 

 

Cheers,

 

Marsh


In Topic: a6000 lens for underwater + underwater case

05 February 2015 - 02:10 PM

Pachku,

 

Hmm, just noticed my first reply to your question didn't take for some reason?

 

To answer it again:  No, I don't have any concrete information on the use of the upcoming Sony FE 90 macro in Nauticam NEX housings.  It certainly won't fit into the new N85 II dome, as one is limited to new 77mm port entrance width since it's not a 2 part dome like the 1st.  I suspect it's possible because Ryan at Reef said one can mount other S&s extensions and macro ports onto the Nauticam/S&S adapter extension.  

 

Until Sony releases the lens or publishes the actual specifications, no one will know for sure.  We should hear something soon from the CP+ photography show in Japan next week.  Lots of rumors say it and an upgraded NEX7, (now called the A-7000) will be finally announced, but we all know about delays with Sony and Zeiss announcements. I'm not holding my breath! LOL.


In Topic: a6000 lens for underwater + underwater case

28 January 2015 - 10:19 PM

Mark,

 

Apparently the new Zen DP170-N85-II is a glass version of Nauticam's 7" acrylic dome. What I liked most about the original 2 part DP-170/S&S-Mini-port adapter set-up is it's ability to accommodate wider lens (physical diameter, not AOV) such as the Z12 or even the upcoming Sony FE 90 macro, since one can use S&S extensions and macro ports.

 

Zeiss contacted me today and said my modified Z12mm is back from Germany and will be here by weeks end. I'm anxious to see how it works in my 4.33. I also have a 20mm extension, so I may see if I can put a diopter on it somehow for CFWA in the 4.33 or 7". This might help with the corner sharpness problem often encountered with rectilinear WA's in a high curvature compact domes.  As it is, the Z12 has a rather short minimum focusing distance of 7", so it will be interesting to see how it functions with corner sharpness in a compact dome. What I don't know is how a low power +2 diopter affects AOV when used with a WA rectilinear? Can anyone explain that to me.  

 

I'm not all that hopeful to be honest that the 4.33 will work, but no one has really tried it. So, I'll give it a whirl before putting my 4.33 and Sony lens combinations (S16, WA and FE converters) up for sale. It's comforting to know, however, that a step up to a 7" port will work if the 4.33 doesn't fit the bill.  Plus,  I'll use the same method (as my 4.33) to modify my Port 72 swing mount to fit the 7" wings and have a nice versatile single dive scouting lens with WA and macro capability (w/ Aquatica +10) when using the Z16-70.  Good to hear the Z16-70 IQ looks good and sharp underwater. 

 

Should I get the compact 4.33 to work with the Z12, I plan to add my 20mm extension to the 4.33 to use the S18-55 for a single dive lens (it's length fits perfectly, but I haven't tried it out yet to see if it actually functions). I have a pretty good S18-55 copy and am fairly happy with the results in my flat Port 72. I'm hoping the dome will reduce the chromatic distortion, along with a wider AOV. This all is a cost effective approach to my limited budget.  In time, I see myself with the new N/S&S mini-port adapter, a DP-170 and S&S macro port using the Z12, Z16-70 and Sony FE 90-M lenses on my NEX7. Like you said, it'll only be a little larger rig to transport than my current 4.33 set-up.  Maybe even around the same size when I get rid of my Nauticam C-60 macro port, Metabones adapter and Canon 60 EF-S macro. 

 

I guess I'll find out how this all pans out within a week in my hot tub or nearby pool. LOL.  It'll be late spring or maybe even fall before I return to the Philippines with my Filipina wife to dive. 

 

Cheers,

 

Marshall