Micro Four Thirds Focal Reducer Shootout

Started 10 months ago | Discussions thread
MatsP
Senior MemberPosts: 1,154Gear list
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An honest test - it shows competitors are not too bad
In reply to amtberg, 10 months ago

amtberg wrote:

s_grins wrote:

amtberg wrote:

s_grins wrote:

"50mm f/1.4 Nikon G lens (wide open) attached to: 1) the Light Cannon by Vizelex; 2) the Lens Turbo by Zhongyi; 3) the R.J. Focal Reducer; and 4) the Speed Booster by Metabones."

Why such a simple thing has to be so complex? Did you have a problem with selecting just a equal M43 lens?

I'm still can't fathom the depth of idea behind setup

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Camera in bag tends to stay in bag...

Umm, you seem to have completely missed what these focal reducers do. They are designed to adapt full frame or (some) APS-C lenses to smaller formats by shrinking the image circle, which has the added benefit of reducing the effective aperture of the lens. You couldn't attach an MFT lens to a focal reducer because it would make the image circle smaller than the sensor.

Well, if I understand you right, speed booster is a focal reducer, and it takes from FL and,shrinking an image circle, adds to an F-stop making lens faster.

Am I right? If I'm, than all these

1) the Light Cannon by Vizelex; 2) the Lens Turbo by Zhongyi; 3) the R.J. Focal Reducer; and 4) the Speed Booster by Metabones."

are just different brands of the same FL reducer, and there are 4 different setups. OP wants to compare different brands, which may make a sense.

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Camera in bag tends to stay in bag...

Correct. The OP designed the optics in the Speed Booster adapter which was subsequently copied by the other brands. He just demonstrated -- quite convincingly I think -- that his original design is the best.

Yes the test showed that the original design is the best - but it also showed that at least two of the competitors aren't quite as bad as you could suspect. So if this was a marketing attempt- which some of the posters in this thread seem to believe - it may have the opposite effect. It seems that at least some of the competitors are good enough to be considered, regarding the lower price. So I really think this was an honest test. Thanks to the Op for that.

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