Your production value alone is worthy of a million subs.

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

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 ??!!

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.

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.

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.

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

I type in BMPCC 4K and of course it’s a dude wearing a sailor shirt with fog in the air for no reason...I expected nothing different. 😂

Need me a sailor shirt dose for the day ;)

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.

Unless you are making money with your cameras, Viltrox ALL THE WAY. There is absolutely going to be better footage with a $700 adapter vs a $70 adapter. Metabones overcharges to much and if they were in the $300 max range its still overpriced but I would have considered it. I have a Viltrox myself and work has metabones, yes Mete is nicer but for personal use, the price cannot be beat. I expect 10 times better performance for that price and it was better but not at that price. But again, Metabones is meant for those doing this for a living so they will charge high prices, I do like de-clicked on Metabones where Viltrox is clicked. Viltrox is all manual, a BMPCC will not use the cameras functions for Iris. Metabones is like Autodesk, they charge so much because pros use it and can afford it, but their is the cheap version with far less for non-pros.

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

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

DUDE!!! JUST THANKS MAN!! i was thinking about this, about there was another type of adaptor with better glass, saw about metabones and all of the sudden, all this type of question, came to youtube and you gave me all the answer! thx man!! cheers!

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

The production value of this video is STUNNING! This is the first video I’ve seen from you and I’m extremely impressed. Lots of good unbiased information and no time wasted. The graphics were very professional as well. I’m definitely subscribing!

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

hands down the very best video on this topic across the entire youtube. superb production value and presentation. I hope you have a video like this on every gear topic. would literally save me hundreds of hours of research.

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!

I have 2 GH5 and 2 GH5s for my production house, 2 paired up with metabones and two paired up to vitrox. We’ve used them all interchangeably and randomly amongst all 4 cameras. Other the then the perceived quality difference being higher on the metabones there is no difference in the footage. None. On the viltrox you are required to adjust the lens manually to set infinity focus (you can do a quick search on KZfaq for a tutorial on how to do it) it’s really simple though. Cheers

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

This video is sooooo well made. Keep going, love❤️

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

Quite possibly the best tech review video on KZfaq, and most definitely as it relates to focal reducers. This the best video in this category, by far. Thank you for this content.

You, my friend, actually made everything very easy to understand! You are also very accurate! Kudos and more power!

Great video, I've most definitely noticed the edge blurring from my viltrox at 18mm when getting wide shots with a deep DOF. I always wondered if it was the adapter or the lens, now I know. Thank you!

I don’t know how I got you in my recommendation, but I am so glad youtube did it.

you're the best at this you explain it at a level where someone who doesn't know ANYTHING about cameras can understand, thank you!

Thanks for really doing the work to compare these two adaptors. Great production quality on these videos too.

Notifications are definitely on for this channel. I aspire that as I start my KZfaq channel I can attain somewhere near the level of quality and attention to detail you put into every one of your videos so far. Keep up the great work, cheers.

Excellent explanation and a very interesting test. Thanks ;)

Once again, this channels is fucking AMAZING!!! Great job guys, keep it up, so much useful information, you totally bring a whole new level of clarity and production value to KZfaq!

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

Very nice comparison. Thank you!

Great content! I know your Chanel will blow up soon! You got this!

This video appeared in my feed, and thanks for that! I have both Canon and Olympus gear and have seen these adapters from Metaboned and Viltrox. Now, thanks to this excellent explanation/test/review I know I should not be a "cheapo" and buy the Viltrox. 🤪

As always, great and unbiased work here and backed-up with solid visuals. We always look forward to your videos when we're getting new gear. Keep up the great work.

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

Done. Subscribed. Saw your video yesterday and thought, okay... this is good. Was searching today for the viltrox vs metabones and I find you again with an incredibly specific problem I've been searching for online. Amazing work!

Thank you. One of the best and most well done videos I have seen for a long time. I really appreciated the depth of understanding I gained on a topic and your use of visual aids and graphics. That is all very relevant for me right now as I'm about to buy the BMPCC 4k camera and continue my journey of discovery in this fascinating field.

Your videos are insanly great and this one doesn't make a change ! 😍 The image, the editing, the sound, the music, the informations and the clarity of it makes it so good! You're clearly a step upper than all the other tech reviewers.. Bravo! 👏

This by far the most detailed comparison of the speed booster I've seen yet and probably ever will. I actually have viltrox adapter on my Gh4 with sigma 18-35 and for the most part I think the image quality is sharp for enough. It's very good to know the differences between the two. I might get a speed booster by metabones once I get enough money from the Gh4. Despite the shortcomings the viltrox is just an incredible adapter to get started with for the price.

It's really amazing how this channel keeps exceeding prevention, amazing work thank you for this amazing content and visuals!

Bro your videos are always awesome. Entertaining and informative. I never thought I'd get to use a Metabones Speedbooster but I got a kit that came with it. I can't wait to see what it does.

Great as always! Receiving my pocket 4K this weekend so I needed this info, thank you so much!

Tés vidéos sont d'une qualité incomparable ! La musique dans la première, la lumière/fumée dans celle-ci, wow... Continue!

Just felt like I took a whole semester of school in under 9 mins. Thanks :]

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

This is by far the best content i've seen! You deserve a much larger audience!

Wow, thank you very well done and easy to understand. Thank you for taking the time to post this.

Super nice, i didn't spotted the differences between these two speedbosters, thanks to you !

Another great video with quality analysis, engaging footage, and some very nice animations. Thanks again for a great video!

Seriously, this is turning into my favourite youtube channel. I am consistently impressed by the amount of work you put in your videos, and love the fact that the BMPCC4K is featured a lot, since I've recently ordered mine. Great job!

Did I see smoke behind you ? ! Good lord this was a great, informative video!

Superb content as always! Really nice comparison video. Can't wait to see more from you guys

Amazing video, congrats!

A very clear and compact video. Tks

So happy u did another video, looking forward for the next one

This comment is to notify youtube to show me more zebra zone. Also of course i subbed. Thanks for quality videos :)

Great information and production quality. Your channel is sure to blow up.

Really great comparison here. I had both the metabones and the viltrox speedbooster and never noticed I difference in sharpness in the center or edges but your test do show quite a bit of difference in the far corners. Great review

This comparison was really helpful, thanks a lot

you are the best content creator in this theme. Your style is very fresh and new. I feel you know something what i need to know :D Thanks informations!

Wow, you belong on a TV show weekly presentation. Great job. Do more please. Sailor shirt is what probably made it that good. :)

Excited to say that I was here before u got to 6 digit subscribers. 6.4k subs and counting. Crazy visuals and lighting. Ur hairstyle and sailor style shirt is unique too. Got ur own style.

Your channel is very interesting and useful! I rarely subscribe to channels, but I subscribe to yours after the first video. The video was shot and edited at a very high level. Your videos are very informative! Please continue. PS: noticed an mistake at 00:07:08 - mixed height and width of the full-frame matrix) but it is not essential

Thanks for this nice produced explanation! Very helpful informations and perfectly visually expressed! Super inspiring!

I learnt a lot watching this insightful video. Very well put together with a lovely aesthetic . Thanks for spending the time making this.

Great demonstration 👏👏👏🙏🏻

Don’t use white backgrounds at the end of videos. On the Apple TV KZfaq app, the box that indicates which video you are highlighting at the end is white so you can tell what your selector is doing. Very annoying. Any shade of any color but pure white. Pure white is too much anyway. If watching in dark environments it blinds the viewer.

Came here after watching your switching to DR video. Excellent content

You explained it very well and easy to understand. Thank you so much...

Good stuff

Awesome and tightly presented Info. Straight to the point. You answered ALL my questions . Thank you.

thank you my friend. this was the exact thing i was searching for. you explained soooo clearly! you earned a subscriber yar. hope to see more videos. love you.

Thank you for the full frame an not full frame comparison. I was looking for that all day. Instant subscriz

Thank you for the amazing comparison

Clear & precise! Glad I spent the money on my MTB .64 (which I'm very happy with).

GREAT video with actual examples that answer all questions one may have. Liked and subscribed!

Nice info, production and editing. Subscribed!

This lesson was brilliant! Maybe I am slow, because I had to watch this a few times as I was confused about lens compatibility w/GH5, but now I get it. Thank you.

Dude, your channel is fantastic. You deserve far more subs. I'm sure it'll grow over time. Keep it up and thanks for the great content :)

Other comparisons show that the corner sharpness on the viltrox improves significantly once you stop down to 2 or 2.8. Also, the Sigma 18-35 is an apsc lens, so it may be better with full frame lenses. I personally think that it is better to use a full frame stabilized lens like the canon 24-70 f4 on the BMPCC4k/Viltrox setup.

Again, such a great pro-quality video!

very nice video, I remember when the metabones speedbooster was announced many photographers were very confused as to how it was possible for an extra lens to increase the aperture since all they new was teleconverters... some even downright refused to accept it. but actually those closeup lenses for macro stuff do the same thing, except with those you obviously loose the ability to focus on infinity... anyway, thanks for explaining it so well, I hope no everybody has understood how it works...

This was a video a really looked for. Thx a lot

Everything is so well done! Keep it up

amazing work

Thanks for explaining so smooth. Thanks

DUDE... UR VIDEO IS SOOOO GOOD !!!!!! THAAAANK YOU

Thank you for your great content. Just searching up this issue for last 5 days and suddenly you respond my questions :D Thank you...

Excellent video and top notch informations. Merci beaucoup!

I don't have a Metabones Speed Booster to test against my Viltrox EF-Eii Speed Booster. However, I am fairly happy with my Viltrox, using it with Canon EF lenses modified for use on the Sony APSC A6400 and A6500 cameras... I use this almost exclusively for portraits so the unsharp edges do not bother me to any great degree and, perhaps because I am only using the center portion of the frame, I don't notice the unsharp edges too much. I also have an inexpensive M42 to E-mount speed booster which I also use primarily for portrait work. I was able to get the Viltrox EF-Eii Speed Booster for right about $100 (U.S. Dollars) on-line. Since I primarily use native e-mount lenses, except for portraits, the Viltrox provides an economical accessory for my e-mount APSC cameras. I have noticed that my EF 70-200mm f/4L IS and 100-400mm f/4.5-5.6L IS ii lenses auto focus better with the Viltrox than with the Metabones IV and Sigma MC-11 adapters...

At last, a useful video on the subject. Thank you very much!

Man that sailor shirt! 🤣🤣🤣🤣 Great video comparison, thanks a lot.

Brilliant comparison. Thanks.

This is super informative. Thank you. Subbed!

This is weird, maybe viltrox do have a quality control issues because mine is really sharp corner to corner, i have test it since I got it six months ago. The only thing I had to check was to adjust the lens to get infinite focus, but is a really easy thing to do. Maybe doing that will correct the focal plane and help the corners.

This is actually the ONLY video I've seen that shows how the viltrox is NOT competitive with the latest Metabones. I used to to think speedbosters were affordable, lol.

REALLY GOOD VIDEO.SUBSCRIBED SINCE THE FIRST VIDEO RELEASE.