DZA - both RJ and Lens Turbo v1 are very similar in that they both suffer from the issue. Lens Turbo v2, which was released recently, seems to have a much better design and finally solves the dot issue. I'm pretty sure all RJ adapters have this problem, it's just people use different lenses in various lighting conditions and therefore it may not be so apparent to some, but it's always there. When I owned it, I used it ONLY when I needed an extra stop and never in full daylight, otherwise it would ruin my shots. For that it was OK, but sadly it was never good enough to be a substitute for a simple m4/3 adapter. Eventually I sold because I figured it was not worth the money and due to the dot issue I used it scarcely.

@monks19

http://www.personal-view.com/talks/discussion/6753/mitakon-lens-turbo-speed-booster-analog-available#Item_193

We'll have it on deals as all Mitakon lenses

There's a reason metabones adapters cost what they do, and RJ adapters cost what they do.

It is also not optical design, it is internal coating and lens coatings.

As I know for now only some latest Mitakon lenses have top level coating in China.

Japanese companies have huge advantage in this element, as they had 70 years of constant development and improvements. With their latest nano coatings (usually on outside big element) being outstanding.

Ok, but which ones comes from Japan, then ?

Big prices drop

Adapters without tripod mount - $122 $90, with tripod mount - $129 $99

Perfectly fine, especially not for top lenses and indoors.

For more modern and better quality and more expensive adapters see

http://www.personal-view.com/talks/discussion/6753/mitakon-lens-turbo-speed-booster-analog-available

I bought RJ lens turbo canon eos to m43 here...and I can tell you for personal experience STAY AWAY FROM IT...buy MITAKON, Vitaliy has it now on deals....the RJ has the blue cast, which is horrible, I contacted RJ and they were with excuses all the time,no real solutions, NO SUPPORT FROM THEM AT ALL AVOID RJ...GO FOR MITAKON !!

Well Vitaliy let me clarify with more info my statements... I could buy the RJ turbo from ebay but decided to buy it from Personal View in order to support the site for all the great job with the forums, hacks etc....Since I bought it, i got the horrible blue cast but didn't want to make a big deal about it, I thought I can live with the issues, why bother you with that Vitaliy? I belive you are very busy running the whole site, checking every single post in this site, and you don't make the rj turbo, the manufacturer should be behind his product....well then suddenly I needed to use the rj for making a video for my daughter at her school....the resulting video was so bad with the blue cast that I thought was a time to see why I was getting it...It is not my camera I am using a gh4, I did videos with and without the rj turbo for test and that is how I found that blue cast came from the rj...looking for answer online found that I have to use lens hoods , bought rubber ones, different sizes...same issue. Then looking online in one forum found the website for RJ, I sent emails to them, around 3 no answer at all, until the 4th time the owner Ron Jin sent me an email, saying that I have to do the same things I did already, like using the hoods, stop down the lens etc when I said no support from them I mean no technical support, but customer support, stay behind your product...I told Ron that the RJ turbo is a no go for me, maybe I got a lemon? who knows ,but asked him if it will be possible to send the rj turbo to him and get some kind of store credit and I will pay the difference for an RJ turbo v2 that I thought might have corrected the issue.....but like beforne I got no answer anymore from him...sent emails a couple of times...no answer at all. that is why I decided to share my experience at this thread.

@DrDave

Most guys buy Mitakon now

http://www.personal-view.com/deals/adapters/mitakon

http://www.personal-view.com/talks/discussion/6753/mitakon-lens-turbo-speed-booster-analog-available#Item_202

HI guys, has the RJ lens turbo had a new version come out or an update to the optics or something? On their website it says "new version" and/or "new optics design"

http://www.rjcamera.com/ocart/index.php?route=product/category&path=20_65_69

Thanks Vitaliy

This adapter is not bad. If you understand limitations it very good entry point. Works fine with all of my old FD lenses.

@Fifty_81

Are you sure that you need to move elements separately? Normally only all assembly is moved for adjustment of infinity focus.

You best bet is image search.

Hi dear forum,

I just received my Lens Turbo II and tried to mount my FD 50mm 1.4 but I cant make the aperture work. I bring the red dot of the lens to the yellow dot of the adapter and twist it towards the red dot (so red dot of adapter and lens match up). While I do that i can feel that the metal screw of the adapter is moving the aperture hock (dont know how that is called), but when the red dots are lined up so the entire lens should fit into the adapter to move again in the other direction its not possible because where the screw is placed the lens pops out a bit and is not fitting into the adapter. if I lift the lens a bit and put it back it fits but the metal aperture hock is not in place anymore and when i screw the lens on the aperture ring is not functioning. i have looked for solutions online, found one guy that said for him it worked to make the screw of the adapter bigger with some rubber because in his case the screw was not lined up with the aperture hook of the lens (thats not the same in my case). tired this as well, funnily one time i somehow manage to get the lens on the adapter with the aperture working but after that always the same (it pops out a bit so i cant mount the lens on the adapter). I made a video, hope you can see the problem there

please help!