For me.. The speedbooster is a tool. Before anything, it doubles your lens inventory by reducing the 2x crop down a good deal, so you get two focal lengths from each lens. One with, and one without. Then you have the extra stop of light.. I know, I know... some can get by without that.. but take into consideration most glass is soft at it's lowest aperture... but since a speed booster give you an extra stop... you can stop down a step, have the same light as you did without the speedbooster... but get a stop sharper image. Then, you have something like the $450 Metabones FD-M43 Speedbooster that opens you up to a HUGE selection of relatively inexpensive, quality glass... all of which have a very beautiful Canon look. Lastly, it is likely at some point a change away from M43 will be desired, maybe not today, maybe not next year.. but eventually.... and M43 glass just isn't going to convert. So the speedbooster isn't something you take or leave... it's a valuable tool in your bag to provide flexibility and features to enhance your creative ability.

Superb appraisal of the issues with the speed booster and MFT generally.

You raise some very interesting points on both sides. Thank you

Hey John, i totally agree. The G9 with the 16mm Sigma is one of the perfect combinations. No need to hype the booster cause i´ve got the same results with the sigma. Quick and good focus for stills and videos.

Great point about using a speed booster protecting the sensor!

Thanks for the video, good info!

With regards to the autofocus, often you have to adjust the speed boosters optics to fine tune AF. This usually isn't a big job. It just involves screwing/unscrewing the optics half a turn either way.

Very informative. Excellent stuff.

Good video I am ditching mine soon as well. A lot of great mft lenses to choose from

Thank you for the info.

Thank you, im not buying an adapter, im going MFT.. This is my first camera, I ordered a gimbal as well, and I believe this applies perfectly to the Blackmagic pocket 4k as well...subbed too

KZfaqv suddenly recommend this video to me and i watched. Nice video John!

Thank you for the review. None of the objections here affect what I do in video, so I will continue to use the XL.

Great video Thank You

Thank you.. i’m also considering to get speedbooster for myself but decided to hold that thought. After i went to a camera shop and looked at those fulframe Canon, Sigma and Nikon lenses, i just have a second thought about how small the MFT lenses. I guess i just have to settle down with Sigma prime MFT and Lumix lenses. I have a GH5ii camera. Glad to watch this video and hear about your thoughts about not using speedbooster. I don’t any FF lenses. Thus it is not practical for me. Thank you.

Great video John..... I use an Olympus EM5 mkii and the Metabones speed booster is allow me to use the amazing Olympus OM lenses out there and increases speed and image sharpening, just love using older manual focusing lenses... plus they are cheap

good stuff thanks! what kind of lav mic are you using? is it boya?

I am with you regarding the 16 and 30mm F1.4 sigma MFT lenses. I have both and they are my favourite lenses . The reason I might be going the other way is lens changing time and hassle when you have a Cini Rig with Mat box etc. I am hopping to planning to buy the sigma 18-35 sigma with Metabones Ultra 0.71 Speed booster to overcome this issue. I definitely agree with you on that people need to be more open minded on MFT.I have no problems with Bokeh ( I think some people go way overboard on this issue BTW), no problems with light. I am wondering wether to keep my Primes just in case now lol.

I use focal reducers with Olympus OM Zuiko glass, which is not auto-focus, and which is really tiny and lightweight. So John's reasons for not using a focal reducer don't apply.

This was actually very, very informative. Thank you John! I learned so much today and this helps me in my decision. I was debating buying a speedbooster to use a Canon EF 28-105mm lens we had with full frame image on my E-M5 Mark II, but it does not sound worth it as it's definitely not perfect and there's a few factors in there that is a deal breaker for me. I'll just invest in a good prime lens as I also prefer having the best image quality in all light settings. Cheers and subbed.

Very informative. Thank you for making it a positive look on the speed booster at the same time explaining why you don't want to use it anymore.

I think a much better option is a 4/3 > m4/3 adapter. You have access to a lot of excellent, cheap old 4/3 lenses and focusing is good.

Solid video. You got a sub from me. I'm all about micro four thirds as well

Yo compre el adaptador Viltrox hace poco, no tengo lentes Canon, pero creo que en algunos momentos puedo necesitarlo. La verdad acabo de entrar en el mundo M43 y ninguno de mis lentes tiene resistencia al polvo o el agua. Espero sacar lo mejor del sistema y me deje llevar por las recomendaciones, mi siguiente compra sería el Sigma 18-35, pero creo que tienes razón. Tener los lentes nativos y la protección contra salpicaduras sería lo mejor. Gracias por la información.

The size and weight of m43 is fantastic... I came from Ursa mini... I don't want to go full frame

Even with Sony’s god camera, A7sIII, I’m not switching. The weight, size of stuff and usability are deal breakers. I’m loving V-log. I would be interested in your auto focus settings. I can’t stop the camera from background pulsing which this video does not seem to do. Is the trick the Sigma 16? The G9 actually works fine while flinging it around walking and vlogging but pulses locked off. Thanks.

Hi John. I just found your video. Great info; thank you, I just subscribed. I have a G9 with the Leica 100-400 lens, brand new to professional grade photography equipment, and I am about a solid 1/2 year into photography and video with my new G9, and still learning how it works with all its features. I am having a ton of fun and getting great birding and wildlife shots. I would like to increase my reach and sharpness for birding photography of birds. It's rare I get very close to birds and I would not mind benefiting with a faster shutter speed that comes from having a sharper focus of light, along with greater reach and cropping ability. Most of my shots are manual focus. Will the speed booster with a rented Canon full frame 600mm lens give me what I am looking for? Also, would you recommend Adobe Lightroom over free editors? I am suspicious if some of what I am looking to improve about my work will come with more practice and better editing skills and tools. Thanks John!

Ping me if you have an Oly Om to m.4.3 you are unloading. I appreciate John's assessment but if I can get a metabones on the cheap it would be fun to play with.

Since this video, Sirui dropped theur anamorphic. I think 2 or 3 of those are all any one would need other than a few select primes

ca i use it with the same lens that com ewith my G7 ??? or I have to use another lens

Super helpful video! I’m just getting into wildlife videography, bought my first camera the gh6, and on the fence between canon ef 100-400 4.5-5.6 with .71 metabones SB, or the Lumix 100-400 4.0-6.3 native tele. Since I’ll be shooting birds and insects in mornings and evenings, which would you recommend?

I want to get as many sensor sizes as I can. Micro 4/3, Medium Format and I already have APSC and Full Frame for different uses.

Do you ship to Australia? I'll buy it! = ) Joking aside really appreciate the thoughts. That sigma 16mm + GH5 + Ronin SC has been invaluable for me. Great to get the auto focus and roll.

I am Leica lumix guy and my G9 only use native pana lens to work out the best of G9^^

There is also a Metabones Speedbooster that adapts old Canon FD lenses, which are significantly smaller and cheaper. Also, you mention several times that the Speedbooster is for adapting full frame lenses, which isn't necessarily the case. The Sigma 18-35 and 50-100 are aps-c lenses and the XL Speedbooster will vignette on the wide end of those lenses. Last point, the determining factor for size and weight for zoom lenses tends to be their max aperture which is why those Sigmas (f/1.8) are so big and heavy. And why the Leica 10-25 f/1.7 you briefly mentioned is similar in size to the Sigma 18-35. It doesn't really have to do with the camera system or sensor size. Anyway, enjoyed the video!

You just saved me $700. Thanks!!

Hi; I saw your videos. you made many nice shots. I love Vietnam too :) What lense did you use for this specific video? It has a great bokeh. Also I was thinking of selling all my Full Frame lenses and the speedboster and getting the Leica 42.5 f1.2 and the Leica 10-25 f1.7 but they are very expensive and not compatible with the S1H and to match cameras it's best also have same lenses. Leica glass is the best for me. It's the closest to Panavision, the Real Big Cinema.

Hi, Great Vid! couple weird things I wonder about..Is there any reason theres no MFT to sony E mount? Like there is every other combo but this one... Wanted to use my Sony E lens on this new MFT camera and expand my options for lenses... Also is there such thing as the opposite of a speedbooster? Like a teleconverter I guess? Lets say I want to use my MFT lenses on my Sony APS-C sized sensor (sony A6500) This setup is the "wrong way" around for a speedbooster to do any good right?(hence needing the opposite effect) With just a simple adapter the lens housing would show or heavy vignetting would occur of course since the sensor size is smaller on MFT than APS-c... Eh any input is appreciated Links to products to check out are nice too :) Again great insight in the vid! ty

My understanding was not only to you have to 2 x the field of view you also have to 2 x the F Stop number when using micro 4/3?

Getting the G9 Friday, I'll stick with my Viltrox and 18-35 initially but you have a very valid point, especially size and weight. Friday ... Friday ... Friday 😂

You tried Voigtlander Mitakons?

I think it's a tool like any other. Like it's good to have a speedbooster with good FF Glass if you can afford it, because you might run into an issue where you're like dang I wish I had that right now.

What I like best about this vid is the sound... what mic are you using?

You may have helped me dodge a bullet here, one I’ve been worried about for a few months since moving from full frame to a GH5! Is the Sigma 16mm still using a Metabones adapter? What’s the current setup?

Best ad for a speedbooster

I use a canon eosm with a sigma 18-35, with metabones for my first time...it's fun!!!

I'm using only prime Olympus pro lenses and autofocus with Olympus OMD EM-1 Mark III... I don't think I need speed booster

In your Dec 4, 2018 video you said the Speed Booster did not add to CA and the images were more sharp with it's use. Was that video in error, did more use of the Speed Booster produce different results or did I miss something? This video seems to be the opposite of that one. I'm inexperienced with no rude intent, just want to clarify.

I just bought a BMPCC the original, and I've been questioning why everyone seems to want to put a speed-booster on it immediately. I've been enjoying the pancake lens I got it with. Thanks for the thoughtful video. It's nice to hear a different perspective.

would you get the native rokinon lenses ?

Iam all MFT lenses "glass" they're amazing quality and size, weight, I travel a lot so I prefer the extra weight to be batteries. There's also better tech now than the old days like dual ISOs so things don't have to be huge. The only downside is small lenses make you look small with some clients you know what I mean

​@UCxfa_SaKmDVFbz6P3ETmX-w Hello, I just bought some Rokinon cine lenses for MFT mount... to use with my GH5. What do you think?

The smaller sensors still have more noise even in the same exposure.

1.3 is f2.6 on mft you can buy a f.095 or f1.1 and get even better light

(24-70mm) 30-90mm f1.8 is too hard to pass up not to use a speedbooster

I don't understand most people. Panasonic made the Micro 4/3rds System so people could get a great image with a small rig. Yet, everyone runs out to get a big clunky full frame system. I have seen enough footage to know that there is not much difference (if any) in image quality between the two systems.

How far were you sitting from the camera in this shot?

Now that the s5 has been announced, I'm debating the s5 instead of getting a g9 and a speedbooster. Pretty pricey for a first timer. I feel like getting the g9 for now and maybe the metabones in the future. I'm just a bit annoyed how pricey the m43 glass is, everyone makes it sound good but when you look at the prices some ef full frame lens are cheaper 😂

Tell me you've purchased the Sigma 56 by now? :)

How do I send you my ditch's address? I can pay for postage! Thanks!

Don't you feel bad knowing that you can't obtain a full frame deep depth of field? that's the only reason that keeps me hesitating about going exclusively in MFT mode.

Also, why not adapt full frame lenses without a speedbooster with just a dumb adaptor? That way you actually crop the lens by two and you keep the best of the older full frame lense, you only use the center of the lens. I used to to use a speedbooster and one day I picked up a 20 bucks adapter and mounted my old Nikkor 50 AIS 1.4 and 28 mm 2.8 on it and WOW! The Nikkor 24mm 2.8 becomes a full manual 48 with a lot of character. Actually because the dumb adaptor takes the lens further away from the sensor you don't really have a crop of 2. I'd say it's close to 1.8.

8:27 any video proof on this?

Sir whats your Instagram account name plzz tell

Autofocus? Tha is not a good reason for me. I shoot manual.

This is the first video I am able to watch at x2 and understand everything. DAMN you speak slow dude.

Kind of echoing what Richard said, we all know that MFT cameras have a 2x crop factor! But, what is rarely talked about if ever, is the proper way to do the conversion. There is an upside if you have a Speed Booster that is x.71! If you have a Panasonic lens such as the 12-35 F2.8 you really have a 24-70 F5.6! We all know this! BUT, if you have a, let's say a canon 50mm F1.4 lens on an ultra .71 speed booster(Metabones or Viltrox) doesn't matter, both of them are good, that Canon is now a 71mm but with an F-stop of 1.0! With a .71 Speedbooster, you multiply the Focal length but divide the F-stop by a factor of 1.42! I have an old Tokina 11-16mm F2.8 and an old Sigma 20mm F1.8 and I never used them on my old Canon 7D! The image on both of those just didn't do it for me and I tried everything. Even getting rid of them but no one wanted them. But NOW, I have a Tokina 16-22 F2.0 and a Sigma 28mm F1.3 on the MFT and they are both AMAZING on the G9 and GH5! My Canon 24-105mm F 4.0 is now a 34-149mm F2.8, My 50mm 1.4 and 85mm 1.8, well, I leave it at, I'm good now!. I am keeping my EF mount glass for VIDEO and using my native MFT for photos! I have a shit load of MFT lens and use them for photography and they work great! I also have the Sigma 16,30 and 56mm trio and they are great lenses! The G9 and GH5 are GREAT cameras and complement each other well but I think you get better results with video when using a speed booster! The Speed Booster will put you were a native MFT lens just can't imo! Love your videos! Keep killin' it!

lift some weights bro. prob .5 lbs more for bigger glass??

Stop saying glass. Say lenses! I'm allergic to jargon!

Oh no the big heavy 18-35 😂 go workout and those lenses will feel like they weigh nothing

Weight! Totally ridiculous. You look like a guy that should be fit and strong enough to lift 1kg.