Architeuthis

MAYBE the 24-50 f2.8 will work together with WWL-C...

Thank you Dave... I am a Nauticam/Sony/A7 user. I guess that the gearwheel part of the Nikon zoomgear will fit also to Nauticam N100 housings for Sony FF? Does anyone know? If yes, it will be easy to use just the gearwheel part and put e.g. a cylinder structure on it via software (e.g. ThinkerCad) to fit the appropriate Sony FE lens... Wolfgang

Here is another table that shows the different extensions (in mm) that I have calculated, tested and proved in practice to work very well with different domes (Nauticam 140mm, Zen 170mm and Zen 100mm, all without buit-in extensions and N120 versions). NT: not tested; Green: calculated optimum extension and tested to work very well; Yellow: calculated optimum in parenthesis, but extension tested and works very well... Wolfgang

I think that the photo series by Chris shows much better the difference and similarity between rectilinear and fisheye than any comparison of angle of views, is it diagonal, horizontal or vertical can do... I was using the Canon 8-15mm fisheye with 140mm dome for several years on EM5II and EM1II and can only second that this is an excellent and versatile combination for WA, CFWA and ultra-WA on MFT. Since I started to use it, I never again used the Oly 8mm fisheye and only very seldom the Pana 7-14mm behind a bigger dome... My wife is still using the Tokina 10-17mm with Zen DP100 (N120 version without extension, with both 1x and 0.71x adapter) on EM1II. I think now that this is the ideal combination for MFT as this combination is even more compact (due to the 100mm dome; the Canon with 140 dome makes a rig the very similar size as now my FF rig is, when I use this lens...) and, depending on adapter used, covers two different, but overlapping focal length ranges (1x adapter, e.g., for shy sharks). I know that it is hard to believe that IQ with this lens, that performs miserably over the water, is UW, more or less, the same as with the Canon L series lens, but it is a fact, proven by many. Certainly the use of 0.71x speedbooster, that makes the image circle smaller, helps to improve IQ, but even with the 1x glassless adpater IQ is very good (maybe one should not use the Tokina with the 1.4x TC)... Here is a table that shows the calculated diagonal angles of view of Panasonic, rectilinear, 7-14mm and the Canon 8-15mm, Tokina 10-17mm and Zuiko 8mm fisheyes in different configurations (1x glassless adapter, 0.71x speedbooster and 1.4x TC): Value for Zuiko 8mm fisheye is from product specifications, while for Canon and Tokina fisheyes it was calculated according to equisolid fisheye. The difference between 170° and 180° is probably very small in practice... Wolfgang .

Here is the link that Chris requested: Adapter for Nauticam focus gears for the Canon 8-15mm and the Tokina 10-17mm fisheyes for use on MFT with 1x glassless adapter (the Nauticam gears are build to work with the 0.71x speedbooster). While the regular versions work as they are, the versions for use with Kenko 1.4x TC may need some shortening by abrasion: https://www.dropbox.com/scl/fo/dzjpn1s8wbfhbkyru8l4j/h?rlkey=u8ne953g3iymcyexmgczbmj9e&dl=0

If seeing it optimistic, it may be similar to the situation between Sony A7R4 and A7R5: same sensor (at the first glance this does not seem to be much of an upgrade), but substantially improved AF performance - in this case it may be well valuable for UW? Wolfgang P.S.: I must say, however, that in my hands, macro AF performance of my last MFT camera, EM1II, was closer to A7R5 than to the previous MFT generation (EM5II). Maybe the need to improve AF perfomance is not so urgent for OM as it was for Sony FF...

I have printed out the snoot for Inon Z330 (small version) according to this file here and it works perfect: https://www.thingiverse.com/thing:4753831 This file and numerous other files for UW-photography can be found on this Webside here, type in e.g. "Z330" or "Zoom gear", but I cannot confirm that everything works (I printed just the snoot): https://www.stlfinder.com/ Wolfgang

There is the new Kraken strobe, that also may be worth considering: Wolfgang

The camera is sold now... Heavily used, but working, Nauticam housing for Olympus EM5II (with vacuum system, shutter release extension & padded travel bag etc.) goes for 200 Euros obo (buyer pays for shipping)... Wolfgang

The lens is sold now... The Nauticam focus gear for Canon 100mm f/2.8 IS is still available: 55 Euro obo (buyer pays porto)... Wolfgang

The new Monster adapter LA-FE2 has just been released: https://www.sonyalpharumors.com/new-product-release-monster-adapter-la-fe2/ We will see how good it will work...

The FCP-1 portchart is now available at the Nauticam homepage: https://www.nauticam.com/pages/copy-of-0-36x-wacp-wide-angle-conversion-port-chart

I previously had Olympus EM1II and now have Sony A7R5. I fully agree that there is not much difference in size and weigth for WA: with EM1II I was using mostly the Canon 8-15mm with Nauticam 140 domeport and occasionally the Zen DP170 with Zuiko 12-40mm or 8-25mm. Now I am using Canon 8-15mm with the 140mm domeport and occasionally the Zen DP170 with Sony 20-70mm and sometimes the Tamron 17-28mm (recently I acquired a WACP-C for WA) - pretty similar riggs in size and weight. A big difference is when making macro photos: The rig with EM1II with 60mm or 45mm macro lens (diopters are only required for special cases, e.g. clownfish eggs) is much, much smaller than A7R5 with Sony 90mm (SMC-1 quite often required, I take it with me on every dive). The macro FF rig is the biggest I ever had... => I do not know the release scedule of Nikon, but sooner or later they will release a mirrorless model that is on par witht the D500, presumably same technology as Z8, but DX. For a Nikon user it may well be worth waiting for such a model (what I hear and read the Sony APS-C cameras are not really outstanding)... Wolfgang

First, I cannot tell whether there is a difference at 15mm between Sigma and Canon 8-15mm, as I only have the Canon, which is excellent... Second, the advantage of Canon 8-15mm is that you can make circular fisheye photos. In addition, you can use the 1.4x TC and zoom in more narrow than the 180° diagonal fisheye, approximately to 124° diagonal, more or less the wide end of WACP (the usable zoomrange is, however, quite narrow (15-21mm) and you loose the option for circular fisheye, when using the 1.4x TC)... Regarding the domes, I use the 140mm domeport, as it already provides very good IQ and it is still small (100mm is regarded too small for high IQ on FF by many, but not all). From my personal experience, I know that IQ with the 170 domeport is at least as good as with the 140, but it is significantly more bulky (not so good for CFWA). On the other hand the 170 domeport works better for split photos (but also 140 works o.k.). Quite many use the 230 domeport for the Canon (and Nikon) 8-15mm - excellent IQ, very bulky, but even better for split photos (and also very well working with rectilinear WA lenses)... Wolfgang

I, personally, am a big fan of the "ultra-wide" angle, I like even the circular fisheye. For this purpose (UWA and circular), I currently use Canon 8-15mm with adapter and 140mm domeport. I still have to become familiar with the WACP-C (first longer occasion with many dives will be diving in the Carribean in March; I guess the WACP-C will be ideal for the carribean reef sharks...😊), but it might well be that later, when I am familiar with both WACP-C and Canon fisheye, I will use the Canon fisheye lens more often than the WACP-C... MAYBE, at a later stage, I will exchange the WACP-C for an FCP. But even if it will be possible to cover the entire range, from circular fisheye up to moderate zoomed-in WA, with FCP and two lenses, as Alex indicated in a previous post (28-60mm and ???), there will remain the need for the Canon fisheye in a domeport for split shots. There is plenty of time to see how the FCP story develops and decide later, presumably I will decide that I do not need a FCP... Wolfgang

According to the WACP-C port chart and Alex's post above the difference at the long end is even smaller (5° difference at 60mm and 3° difference at 70mm): 28-60mm: WACP-C: 130° - 69° FCP: 170° - 74° 28-70mm: WACP-C: 130° - 59° FCP: 170° - 62° Consider an error marge of +/- 3% for the FCP specifications and the AOV at the long end is very comparable, if not almost identical. The difference is mostly at the wide end (for >2x the cost and approx. 1kg more one gets 170° instead of 130° at the wide end)... By using the 28-70mm with FCP one can even get a more narrow AOV (62°) compared to WACP-C with 28-60mm (69°) at the long end... At the moment, however, the FCP is not for me: I have a brand new WACP-C here and am waiting for the 28-60mm to bring it UW...😋 Wolfgang

Great information, thanks! Here the relation focal length/AOV is shown graphical (WWL/WACP values are taken from the WACP-C port chart): This shows that the new FCP practically repaces the WWL/WACP as it offers very similar AOVs zoomed in to 60mm or 70mm, but it offers 170° instead of 130° at 28mm...

Jim Decker from Backscatter wrote that also with A7R4 the Canon 100mm IS macro with adapter performs better than the Sony 90mm: https://www.backscatter.com/reviews/post/Sony-a7R-IV-Underwater-Camera-Review Not everybody agreed: I remember Phil Rudin posted that in his hands the opposite is the case, it may vary how one uses the camera... I have used both Canon 100mm IS (for sale in classified and eBay) with Metabones V adapter and the Sony 90mm macro with A7R5 and can say that AF performance of the native Sony lens is much better compared to the adapted Canon lens on this body. Also sharpness of the Sony lens is excellent... => I am very glad that, after Alex's post above, I changed my plan from acquiring a used A7R4 housing to getting A7R5 camera&housing new (of course only available new at this time). I highly appreciate such forums, as they are a very good place to get information before investing thousands of $$$..... Wolfgang

I use A7R5, but cannot compare to older Sony models. I think this tread in the old forum answers the question, at least partially: https://wetpixel.com/forums/index.php?/topic/70196-sony-a7r-v/page/3/ On page 3 of this tread Alex Mustard says that AF using the Sony 90mm macro with A7R5 is much better than A7R4 and even better compared to Nikon D850... I am not sure whether macro AF of A74 is closer to A7R5 or A7R4, but the newer models A7cII and A7cR are likely on par with A7R5 (and A1)... Wolfgang

I think that at this level one cannot say a book is outdated. It lacks photos, so the entertainment value may be smaller compared to modern books, but the >3000 drawings work out differences between species more striking than photos ever can. With > 2000 species it is the most comprehensive single book that I know (the Italian Atlas covers 1300 species with >2200 photos)... Good that you mention the lack of photos, then nobody will be disappointed upon ordering... Wolfgang

Gold standard for Mediterranian, especially Adria, at scientific level. Unfortunately German only (Italian and Spanish translations exist): Riedl R., ed. (1983) Fauna und Flora des Mittelmeeres. Paul Parey, Hamburg/Berlin. (2011 new edition by Seifert) Spanish: Riedl R. (1986) Fauna y flora del mar mediterráneo: Una guía sistemática para biólogos y naturalistas. Ediciones Omega, Barcelona. Italian: Riedl R. (1991) Fauna e flora del Mediterraneo – dalle alghe ai mammiferi: una guida sistematica alle specie che vivono nel mar Mediterraneo. Muzzio, Padova.

For sale is a hardly used Nauticam N120 60mm macroport (SKU # 18701)... asking: 250 Euro plus shipping (located in Austria/Europe)

Here are some pictures. I must say on the pictures the difference looks smaller as it is in real life, when holding the gear in the hand: N120 and N100 30mm extensions (according to the kitchen scale, the weight is 203 g and 140 g, respectively) And here WACP-C (2249 g) compared to Zen DP170/N120 (912 g):

The MF/AF behaviour seems to depend on the camera body: I can MF with the focus gear and , at the same time, use the AF with A7R5... Wolfgang

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