Question on Closeup Lens use with Nex 5

[bvanant]

If the 30 is the only macro lens that will come out (one from Sony and one from Sigma) then I will probably sell my system and housing and look at some other micro 4/3 system. I want a 1:1 macro lens in the 60 mm range. Adding a +10 diopter (subsee) to the 30 macro will only get you to 1.1 to 1 and that is not enough. But then again, Sony is not making cameras for UW guys so I shouldn't complain.

Bill

 

[ScubaMoMo]

The below photo's were taken with 18-55mm lens and a Inon UCL-165 diopter:

Black-spot Jorunna Nudibranch (Jorunna sp) in Hong Kong
Small cleaner shrimp in Hong Kong
Some not yet identified little buggers in Tulamben, Bali
Nudibranch (Chromodoris Coi) in Tulamben, Bali
Unidentified shrimp in Tulamben, Bali
Nudibranch (Nembrotha rutilans) in Tulamben, Bali

Still working on getting my camera under control, so please forgive the focus issues

 

[PHIL RUDIN]

The bigger problem with a 30mm macro lens if it goes to 1:1 is how close the lens will focus to the port glass at life size. Adding a diopter will reduce that distance by up to half which could but your subject within a few mm of the port or even focus inside the port. The 30 macro will be a great fish portrait lens but not so much for sub 1:1 shots. I base this on my use for years of the Olympus 35mm macro at 1:1, a 70mm equiv. in 35mm and how close it focuses to the port glass at 1:1.

Phil Rudin

 

[thkhoo]

Apparently the e-mount 30mm (f/3.5) macro (equivalent to 45mm on NEX-5) will be 1:1 with a minimum working distance of around 24mm. With a diopter, I expect the subject will be touching the port. Shame really... a 60mm macro would've been nice.

 

[PHIL RUDIN]

Trying to light a subject which is an inch or less from the port glass is a real challenge and the addition of a close-up lens would be even more difficult. Again this should be a great close-up lens for fish portraits and small subjects, but as a macro (1:1 lifesize) lens it will be hard enough to use out of the water.

I still think the 18-55 zoom and in this case the ReefNet SubSee +10 close-up lens are the better choice for getting smaller subjects.

Phil

 

[Plotek]

I will refresh this topic.
I have 30mm lens, and when I added UCL165 and UCL330 there was no additional magnification, because of short focusing distance (I think) so do You think that I can obtain higher magnification with 16-50 mm lens and ucl165+330 stacked together?

 

[Interceptor121]

I will refresh this topic.
I have 30mm lens, and when I added UCL165 and UCL330 there was no additional magnification, because of short focusing distance (I think) so do You think that I can obtain higher magnification with 16-50 mm lens and ucl165+330 stacked together?

Those two diopters have a working distance under 10cm. If the lens by itself can focus already at the same or less distance you will achieve nothing with a diopter.
A diopter only influences the working distance it does not provide any magnification by itself so you need to choose something that gets you closer than your lens and at that point is the distance doing the magnification

 

[Plotek]

Interceptor121 THX I will do some test and try to compare it. Do You know what is the difference between UCL165 and 330 and typical Dyron +10 lens?

---------- Post added March 9th, 2014 at 07:19 AM ----------

Did You ever try to take underwater the tele converter for land use, like that one
67mm Professional Titanium Series 2X Super Telephoto Lens - at - AccessoryCircut.com

 

[Interceptor121]

Interceptor121 THX I will do some test and try to compare it. Do You know what is the difference between UCL165 and 330 and typical Dyron +10 lens?

---------- Post added March 9th, 2014 at 07:19 AM ----------

Did You ever try to take underwater the tele converter for land use, like that one
67mm Professional Titanium Series 2X Super Telephoto Lens - at - AccessoryCircut.com

I have never used teleconverters

Inon lenses total power 6.06+3.03=9.09 Focal Length 100/9.09=11.11 cm
10 diopter (assuming it is really 10 in water as sometimes the specification are in air) Focal length 100/10=10 cm
Dyron reports power in air Inon in water so Dyron +7 = Inon +6 same power

 

[Plotek]

I did dry test. When I attached UCL165 and UCL330 and Dyron+10 on the 16-50mm lens then I got bigger magnification than 30mm macro lens from the distance about 20mm.