dimsak

Hey there! Good to hear! Is that your main setup? which dome do you use, and which extension ring? I d appreciate the file for the zoom gear, yes! A photo or two on either side of the zoom range would also be useful, if you have any readily available! Thanks!

Good idea, I think it works (I saw Phil mention it does on a different post I believe). The extension I would need is only ~50USD, so it is indeed quite cheap overall. Downside is that I would need to make my choice before the dive. Will probably hold o that one, but I ll keep it in mind for sure if I find myself wanting more reach!

Thank you for the detailed viewpoint! This thread (and the others i ve looked at) consistently mention that fisheye or macro is usually the best option. I think I will thus skip the 20-70 (at least for now) and go with the 28-200 for topside (which should be a bit better suited for a all-in-one travel lens) On fish-eye, I was also considering the 8-15 canon too, but went with the 15mm Sigma as a very cheap alternative (got the lens for just 80 USD, and the metabones adapter was 100, but I ll need it for the 8-15 too if I choose to switch). The main appeal of the Canon with the teleconverter is of course the zoom, which I understand you also find very useful. On macro, I am thinking the 90mm from Tamron, but I am not sure if the diopters will work nicely, since the lens is a bit shorter than the Sony 90mm (for which the port I have is designed). May I ask what you are using there? I plan to use the Sigma with the 6 inch, and would probably use the 20-70 with the 8 inch. I have some options (in 20mm increments) in terms of port lengths, which I can use with both domes, so I should be able to get a decent fit (a bit wary of the 20-70, as I am not sure it will be shallow enough to avoid vignetting but long enough to support the 70mm end; but I am getting convinced to skip that lens at least for now as mentioned above!)

Very helpful, thanks! haven't seen a 24-200 for E-mount. Just the 24-240, but that one appears to be much worse than the Tamron optically.

Thank you for your input, good to know! Do you find yourself using the 20-70 much, or do you reach out for your fisheye/WACP more often?

Thanks Tim, Chris. My initial plan was to not buy anything more yet (as you also suggest) What has lead me to these thoughts is the fact that I will also need a "main" topside lens. There I was considering the 28-200 tamron, with the 20-70 sony being a close second. The 20-70 being useful underwater could tip the scales. I am currently optimizing for a trip to the Galapagos, do you think the 20-70 could be useful there (i.e., would you ever pick it over the 15mm fisheye?) Aware that this is a. very specific questions and you may not have a view on the matter :) I am just not familiar at all with what subjects at different distances look like in different focal lengths! Dimi

Hi all, I’m building an underwater rig for my Sony A7RIII and would love some advice from those with experience using different lenses underwater. What I have: Seafrogs case with a macro port and a 6 and 8 inch dome S&S strobes Sigma 15mm f2.8 fisheye (adapted from canon) Planning to get the Tamron 90mm macro later down the line Now I’m looking for a versatile zoom to fill the gap. Based on my research, here are the three I’m considering, along with what I see as their main pros: Tamron 17-50: close focus on the wide end, good zoom range, fixed length, affordable Sony 20-70: useful zoom range, would also be my main lens topside, good magnification on the long end Sony 16-35 PZ: widest of the three, no zoom gear needed, fixed length, sharp Would love to hear from anyone who has used two or more of these, especially underwater. Which would you pick, if any! I would delay this choice until I have a better understanding of what I like to shoot, but it affects my choice of topside lenses too (new to the hobby all together), so looking to form an early opinion Thanks!

Hi everyone! Dimi fro Greece here! Relatively new to the world of diving (~100 dives) and completely new to the world of UW photography (aside from action cams). In the process of building my first rig :) Eager to meet you guys and get insights based on your experience and, ideally, make my own contributions further down the line!