Author Topic: Yasuhara announced a new macro lens for Micro Four Thirds (Read 1663 times)

Em5 Pete · « **on:** May 28, 2011, 10:55:03 AM »

lisandra · « **Reply #1 on:** May 28, 2011, 10:56:34 AM »

That looks cool, and 5:1 macro sounds amazing.

adash · « **Reply #2 on:** May 28, 2011, 11:02:27 AM »

WTF?

That looks extremely difficult to handle, and very limited in its magnification. 0.5x to 2x would be much more useful. BTW, I don't know the power of these LEDs, but they seem totally inadequate for such a magnification. I know that because I use rings of 15 and 24 LEDs respectively and they do <not> provide enough light for convenient shooting with high magnification and a stopped-down lens.

popo · « **Reply #3 on:** May 28, 2011, 01:46:50 PM »

An interesting mix. Certainly the lights will help a lot at those tiny apertures and high magnifications. Even "wide open" at f/11 and minimum magnification 4x, you're look at an effective aperture of f/55! I hope you have a clean sensor as any dust will show up at these levels. The magnification range seems very odd to me. And what sounds like fixed aperture steps wont help.

lisandra · « **Reply #4 on:** May 28, 2011, 07:10:34 PM »

I get something like 4 :1 with the raynox its not easy but its cool as hell. I'd kill for some lights like that...

cosinaphile · « **Reply #5 on:** May 28, 2011, 07:41:31 PM »

its....[.voice of audrey in 'little shop of horrors"]....bizz-arre!

kidding ASIDE THHIS THING LOOKS PRETTY SERIOUS

lisandra · « **Reply #6 on:** May 29, 2011, 04:27:45 PM »

Quote from: popo on May 28, 2011, 01:46:50 PM

An interesting mix. Certainly the lights will help a lot at those tiny apertures and high magnifications. Even "wide open" at f/11 and minimum magnification 4x, you're look at an effective aperture of f/55! I hope you have a clean sensor as any dust will show up at these levels. The magnification range seems very odd to me. And what sounds like fixed aperture steps wont help.

I've found it to be the other way around, the less magnification (wider lens) the more dust specs show on the image.

popo · « **Reply #7 on:** May 30, 2011, 12:54:16 AM »

Magnification is not synonymous with focal length. On sensor dust, that is pretty much dependant on effective aperture. The bad thing is effective aperture shrinks a lot with magnification. It doesn't matter what focal length it is, even using this lens wide open, is still going to show dust on all but the cleanest sensors.

Centauri27 · « **Reply #8 on:** June 02, 2011, 04:29:55 PM »

Yeesh...that's one mean (and ugly) looking lens!

Looks like it's ready to shoot a blast of radiation at you...

(the cutout looks like the radiation symbol)

Em5 Pete · « **Reply #9 on:** June 02, 2011, 04:32:13 PM »

I'm guessing Dental photography as great use.

rparmar · « **Reply #10 on:** June 04, 2011, 01:51:05 PM »

Here is a translation of the Impress article on this lens.

Here is the manufacturer's page on the Nanoha.

Em5 Pete · « **Reply #11 on:** June 04, 2011, 02:52:16 PM »

Wish I could find the 35mm RF they made 1999-2003, looks similar to the Cosina/Voigtlander Bessa series..But better built.

Good find btw,

Yasuhara announced a new macro lens for Micro Four Thirds