Davide DB 583 Posted April 3 16 minutes ago, Interceptor121 said: Canon EF - S 35mm has a light ring around the lens Do you work at the patent office? Share this post Link to post Share on other sites
Interceptor121 842 Posted April 3 Do you work at the patent office? That lens has a patent!Sent from my iPhone using Tapatalk Share this post Link to post Share on other sites
Barmaglot 262 Posted April 3 43 minutes ago, Interceptor121 said: Canon EF - S 35mm has a light ring around the lens Can you engage it when the camera in a housing? Doesn't look like that to me. Share this post Link to post Share on other sites
Interceptor121 842 Posted April 3 Can you engage it when the camera in a housing? Doesn't look like that to me.It was a joke. You should not align a lens and light underwater Sent from my iPhone using Tapatalk Share this post Link to post Share on other sites
Davide DB 583 Posted April 3 39 minutes ago, Interceptor121 said: That lens has a patent! Sent from my iPhone using Tapatalk I will close my Kickstarter page Share this post Link to post Share on other sites
Floris Bennema 27 Posted April 4 I have both the 45mm and 60mm and prefer the first one, because it gives beter opportunities when I meet a larger macro subject. When the subject gets really small I flip the CMC-1 in front. I stopped using the CMC-1 with the 60mm, 45mm + CMC1 challenging enough because both DOF and finding the subject. Share this post Link to post Share on other sites
Interceptor121 842 Posted April 5 I have 3 macro lenses for MFT30mm panasonic45mm Panasonic 60mm olympus The best of the three at small apertures is the 30mm which is also the fastest to focus however you are on top of thingsSecond comes the 45mm which focuses a bit slower and really is good up to f/8 for super macro you are really close with cmc1Last the 60mm this gives you 2-3 cm more working distance then the 45mm however this lens is best up to f/5.6 it works well with cmc1 If for supermacro you mean frame smaller than 17.3x13mm olympus 60mm is the way forwardSent from my iPhone using Tapatalk Share this post Link to post Share on other sites
Davide DB 583 Posted April 5 17 minutes ago, Interceptor121 said: The best of the three at small apertures is the 30mm which is also the fastest to focus however you are on top of things I didn't get you. What's the minimum focus distance underwater? Share this post Link to post Share on other sites
Interceptor121 842 Posted April 5 I didn't get you. What's the minimum focus distance underwater?For the 30mm? Around 2-3 cmSent from my iPhone using Tapatalk Share this post Link to post Share on other sites
Interceptor121 842 Posted April 5 To clarify the matter of working distance The working distance is calculated from the sensor which means if a lens is very long the distance from the front element may actually be short Example Panasonic 45mm the lens is 79.4mm the working distance is 15cm from the sensor. However the working distance from the front of the lens is 65.6 mm Olympus 60mm the lens is 98.6mm the working distance is 19cm from the sensor However the working distance form the front of the lens is 87mm Which means that in practical terms the difference between the two lenses is 21.4 mm in water this is 2.8 cm It is not the case that the Olympus 60mm has significantly more working distance than the Panasonic 45mm and even in water this is less than 3cm Those 3 cm become important when you put the CMC in the mix as the wet lens is on its own a few cm thick and therefore it is easier to use with the Olympus I have used the Olympus for many years on the assumption that it would give me much more working distance and then when I finally got the Panasonic 45mm i realised the difference was minimal and I prefer the 90mm angle of view so I do no use the 60mm that much anymore unless I know I need super macro with wet lens Share this post Link to post Share on other sites
Davide DB 583 Posted April 5 Now I'm using CMC-2 with a flip in front of the 14-42mm. This way I can quickly remove the CMC, revert to 14mm and be able to film some fish portrait or larger subjects. But from a pure macro POV I prefer the 45mm, much easier to use. I regret i sold its port while ago. 1 Share this post Link to post Share on other sites
Interceptor121 842 Posted April 5 3 minutes ago, Davide DB said: Now I'm using CMC-2 with a flip in front of the 14-42mm. This way I can quickly remove the CMC, revert to 14mm and be able to film some fish portrait or larger subjects. But from a pure macro POV I prefer the 45mm, much easier to use. I regret i sold its port while ago. For video and 14-42 I use Subsee 5 actually unless I have tripod legs as I can't be as stable if I have too much magnification Share this post Link to post Share on other sites
Davide DB 583 Posted April 5 52 minutes ago, Interceptor121 said: For video and 14-42 I use Subsee 5 actually unless I have tripod legs as I can't be as stable if I have too much magnification Yes, Pietro lent me CMC-1 CMC-2 and Subsee +5. I was very torn between the last two. In the end I chose CMC-2. This was my fisrt test with the CMC-2 on a flip and the 14-42mm. I was still fighting with the tripod. Very flexible combination but Murphy's law is always behind the corner: on the second dive I brought with me only a small snoot light and I met a 1,5m long anlger fish. I could only film its eye 1 Share this post Link to post Share on other sites
Architeuthis 179 Posted April 5 1 hour ago, Interceptor121 said: To clarify the matter of working distance The working distance is calculated from the sensor which means if a lens is very long the distance from the front element may actually be short Example Panasonic 45mm the lens is 79.4mm the working distance is 15cm from the sensor. However the working distance from the front of the lens is 65.6 mm Olympus 60mm the lens is 98.6mm the working distance is 19cm from the sensor However the working distance form the front of the lens is 87mm Which means that in practical terms the difference between the two lenses is 21.4 mm in water this is 2.8 cm It is not the case that the Olympus 60mm has significantly more working distance than the Panasonic 45mm and even in water this is less than 3cm Those 3 cm become important when you put the CMC in the mix as the wet lens is on its own a few cm thick and therefore it is easier to use with the Olympus I have used the Olympus for many years on the assumption that it would give me much more working distance and then when I finally got the Panasonic 45mm i realised the difference was minimal and I prefer the 90mm angle of view so I do no use the 60mm that much anymore unless I know I need super macro with wet lens The increase in working distance (according to your calculation) is +32,6% (from 65,6mm to 87mm) This is in good accordance with the increase in focal length of +33,3% (from 45mm to 60mm) => not worlds inbetween, as you say, but more or less what one could expect... (the increase in lens length is, BTW, +24,2%) Wolfgang Share this post Link to post Share on other sites
Interceptor121 842 Posted April 5 15 minutes ago, Architeuthis said: The increase in working distance (according to your calculation) is +32,6% (from 65,6mm to 87mm) This is in good accordance with the increase in focal length of +33,3% (from 45mm to 60mm) => not worlds inbetween, as you say, but more or less what one could expect... (the increase in lens length is, BTW, +24,2%) Wolfgang In reality the focal lenght is only true at infinity Macro lenses have a lot of focus breathing if they need to be small at 1:1 ratio the panasonic has become a 33mm lens while the olympus is 37mm The Olympus lens has much more focus breathing which is the reason why the lens hunts more than the Panasonic Share this post Link to post Share on other sites
