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The Canon is known for being a very sharp lens plus I had a chance to buy the $$$ N85-N120 adapter and the 8-15 lens locally second hand and also picked up the Metabones second hand. Plus I wasn't that keen on using the Metabones speed booster that is used with the 10-17 due to the optics involved though it is reported to work well. I would suggest it is much more straight forward to implement this with Isotta housings. Mainly because they use a larger B102 port compared to the small Nauticam N85 port. I haven't tried but I think you could mount the camera/lens from the back rather than needing to remove the port and lens to remove the camera, particularly if you remove the hood. It's quite the assembly task and I bought the USB-C bulkhead to charge the battery and download images when on a trip so I didn’t need to disassemble it all every day. It's also considerably cheaper (approx $2500 less based on Backscatter pricing) Also the 34.7mm N85-N120 adapter I use is discontinued, you could probably use a N85 - N120 50 or 47mm adapter with a 20mm extension, but I suspect the zoom knob would not mate up correctly and you would need to print the zoom gear I use, the design is listed on the forum. This post outlines the parts list for an 8-15 in Isotta:

Thanks, but I'm not a lightroom user.

The close focus of the Pentax lens is 450mm, meaning that it won't perform well and may not even focus UW with a small dome. The adapter with that big bump may also be an issue depedning on how much room is available inside the housing.

Not for the faint of heart 😈 https://en.wikipedia.org/wiki/Pentax_F_17-28mm_lens https://www.pentaxforums.com/reviews/monster-adapter-la-ke1/autofocus.html MonsterAdapterLA-KE1 - Pentax K-mount lenses to Sony E-mount cameras ad...MonsterAdapter LA-KE1 electronic adapter is designed to adapt Pentax K Mount KAF lenses to Sony E Mount mirrorless bodies with the features including auto-focus, aperture control and EXIF recording et

@Luko @Muellema thank you, great tips Lisbon to Manila > Flight to Cebu > Malapascua (5 days ) Return Cebu > ferry from Cebu to Bohol (5 or 6 days ) fly from Bohol > Manila > Lisbon We are scooter fans, we always rent scooter and explore the islands / beaches/ secrets places 😀 We prefer local places, local culture, local food... away from tourist areas.. Im planning 2 dives in early morning.... and sightseeing in the afternoon.. We are pointing june to august, due the school holidays... but its typhoon season 🥶 Lets see..

I do both. My catalog (and hard drive) is organized by date / trip / location, then I have separate collections by genus or theme, e.g. “turtles” or “walls”. I’m too lazy to keyword individual images.

@Chris Ross I've been looking into fisheye options more and the Canon 8-15 is quite intriguing, as well as the Tokina 10-17. Did you also consider the latter and what was your reason for going with the Canon? Thanks!

I was replying to NandoDiver asking for general tips in the Visayas. But to your question about Moalboal, not a specific critter but for me outside of teh sardines school the hightlight would be the coral walls on Pescador island, which is one of my favorite dives in the Philippines. Go the earlier you can in the morning, ther used to be operations that scheduled early morning dives on Pescador for REAL divers, however I don't think anymore as all the dive centers are now waiting for the truckloads of Asian group divers coming from Cebu around 10 AM. = where you can find HUGE spanish dancer nudibranches (I really mean HUGE like 40-50cm large!!!), but you need to go deeper around 35-36m to find them .. or the usual giant frogfish on a sponge in the shallower parts.

Pentax did have a 15-28mm full frame fisheye before the appearance of the Tokina 10-17.

15-30 AF fisheye would be a dream lens underwater. It's a wonder one of the housing manufacturers hasn't had one one made in an easily adaptable format.

Hi everyone, dear Dave, I am new to 3D printing, but I have access to freshwater diving here at home and can take any housing down to 40 m. If you would like, I can give it a try. I may also be able to print the part, provided it can be printed on a Bambu A1 Mini. However, I do not have an enclosure for the printer, so I am not sure whether a more advanced setup would be required to achieve the desired level of quality. Warm regards Selim

Thanks a lot for your tips, the trip is already organized, and due I only have 2 weeks and I hate rush we will do only Moalboal and Malapascua. I don't care about white sand beaches, big 5 star resorts, sunsets, banana boats...I live in Ibiza, I already have this at home. I'm looking for diving nos stop, 2 dives in the morning, one in the afternoon and a night dive if possible. I don't need big luxuries, a proper bed in a clean room with good beers and friends after diving. I contacted Savedra divers in Moalboal and they have organized everything, accomodation, diving and transfers. We are going to stay in Tipolo resort in Moalboal and in Blue Coral in Malapascua.. So we are finally going to do 4 complete days of diving in Moalboal and 4 complete days of diving in Malapascua. I have one complete day to go from Moalboal to Malapascua and another complete day to go from Malapascua to Cebu where I will sleep for a night and the day after take the flight to come back to Spain. What I don't know is what to expect exactly on each site. I know, and that's the reason I'm going to, is that Moalboal is for Sardines and Turtles, but is there something else easy to find really interesting ? pigmy seahorse, electric clam, seahorses, reef sharks... Also in Malapascua, there is obviously the Thresher shark, and if you are lucky a tiger shark, is there something else really interesting to see ?

Thanks, Alex. I'm considering upgrading my A7RIV to either the RVI or the AI Mark II. Any thoughts on pros/cons between those two cameras? Brett

Hi everyone, Disclosure up front: I work with CYME, a French software company building tools for photographers. We’re currently testing Specio, an offline desktop tool / Lightroom Classic workflow that helps identify species in wildlife and underwater photo collections. I’m posting here because marine identification is exactly where expert feedback matters most. Fish, nudibranchs, crustaceans, corals, juveniles, regional variants — these are the cases where we need real underwater photographers to tell us what works, what fails, and what should never be guessed. What Specio does: analyzes photos locally on your computer, with no cloud upload suggests species identifications across batches of images lets the photographer review or correct results before applying anything adds common names, scientific names and taxonomy as Lightroom keywords helps explore a photo archive through the taxonomic tree The goal is not to replace expert knowledge. It’s to make large underwater photo archives easier to identify, search and reuse, while keeping human validation at the center. We’re looking for a few underwater photographers willing to test the beta on their own images and give honest feedback, especially on marine species accuracy and whether this fits naturally into a Lightroom workflow. If you’re interested, you can tell us a bit about your workflow and apply here : https://survey.zohopublic.eu/zs/U3CA15?Source=Forum&[email protected] I’d also be very interested in hearing opinions directly in this thread: which marine groups or regions do current ID tools struggle with most?

Thanks a lot for your answer ! I'll have a look at this post, if you personally want a software to try now or just help me to get your workflow, you can apply here to try it : https://survey.zohopublic.eu/zs/U3CA15?Source=Forum&[email protected]

Ok, we're working on video features, so I'll come back to you once it's done :) A huge thanks for your commitment !

Hi everyone, I’m curious how underwater photographers handle species identification and keywording after a dive trip, especially when working in Lightroom Classic. After importing, culling and editing, do you manually add species names, scientific names or taxonomy to your photos? Or do you mostly keep images organized by trip/location? We’re testing an offline desktop workflow that helps recognize species in underwater and wildlife photo batches, then lets you review the results before adding common names, scientific names and taxonomy as Lightroom keywords. We’re looking for a few photographers willing to share their workflow and possibly test the beta on their own images. If interested, you can tell us a bit about your workflow here: https://survey.zohopublic.eu/zs/U3CA15?Source=Forum&[email protected]

It seems to me that the Inon lens (and I imagine its AOI cousin as well) literally sucks. IMHO unusable for wide shots. On the other hand, the GoPro without an additional lens does a great job. Did you have dive mode in the last clip too? In these dives a URPro filter or even a Keldan gel would work miracles in post. Interesting that the turtle searches for Cymodocea leaves among the cursed Caulerpa

I merged several topics on this camera