How Does a Speedbooster Work ? ( and Metabones vs Viltrox )

Tried to explain as best as I could how a speed booster works relative to crop factor if you're interested. Plus an unsponsored real life comparison between the Viltrox EF-M2 and Metabones Ultra 0.71x speedboosters. Note that this is the MkI version of the Viltrox EF-M2, the viltrox EF-M2 II is better. Please correct me if some things are unclear or if I'm wrong :) Hope you like it !

Many thanks to my friends Claire and Mathieu for their time and help for this video to whom goes the credit for the performance in the comparison shots.

The video was shot with an URSA Mini Pro and a Sigma 18-35mm ART lens, the comparison footage was shot with the same lens and a Blackmagic Pocket 4K Camera (BMPCC 4K). But you can also use a speed booster with the GH5 , GH5S or other micro four thirds based cameras.

[antonybui]

Your production value alone is worthy of a million subs.

[AdamFunk]

This is the third video I've seen by you, and you're quickly becoming my favorite channel...in the world, on any topic.
The production value and accuracy and visuals are just absolutely insanely well-done.
Thank you so much for what you do.

[penumbra]

your channel is going to blow up soon with this level of content, keep up the good work!

[HollywoodweddingfilmsGREECE]

This video contains INCREDIBLE amount of ACCURATE information and amazing way to express it with visuals
Cannot truly say enough to be fair on the AMAZING EFFORT !!!! Congradulations
One question, please : Can i use the Sigma 18-35/F1.8 with the XL0.64 Speedbooster, if i decide to use ONLY the 24mm-35mm Focal Length ??!!

[ViniciusAmano]

dude, your content is as sharp as the corners of the images on the metabones. congrats! hope u get million subs soon! u totally deserve it.

[SakuSuzuran]

Your videos are absolutely amazing. Thank you for this comparaison. 👋🏼

[RudyAyoub]

Need me a sailor shirt dose for the day ;)

[christophershivers]

a lot of people dont want the sharpest lens, so the viltrox would be perfect. Anamorphic lens do the same thing, and I love aberrations. It adds so much more to the camera, instead of an old boring sharp lens lol.

[chiku]

Thank you. This is exactly the video I’ve been looking for. The quality of this channel is amazing. You’ll have 100k subs by the end of the year.

[DanielRodriguez-gmih]

I have never heard of you or seen any of your videos but the quality of this videos it’s amazing!

[comradekirilov]

You and media division are the Kings of European high quality YouTube cinema nerds

[BKCycles]

Excellent explanation and a very interesting test. Thanks ;)

[mikechan]

This is the most informative and valuable source regarding Speedbooster that I’ve ever seen so far. Thumbs up for the detailed explanation.

[Iflexis]

the magnifying glass-explanation was a perfect explanation for this, thank you

[panzobonito]

The best video related to speedbooster a had watch on YouTube. Congrats.

[johnromero]

You have the BEST production value for these videos! Thanks for making!

[khurrammughal]

a great comprehensive video, no more confusion about metabones to BMPCC 4K

[clifftotten]

BEST video on this subject that you can find. Bravo! GR8 job!

[colourandsound]

I don't even need a speed booster and I still watched it all. Great video!

[leslawkaznowski]

it is really a difference in sharpness, but with viltrox the problem is that you have to "tune" it correctly. This glass can be moved closer or further to the sensor. That solves also a lack of sharpness in the infinity problem. Great content! cheers!