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Focus on “rings” Metabones Speedbooster / Novoflex / DEO TEC etc (edit)

Hello geeks light,

I realize following the various messages I have received lately that there were many who were lost in this small world rings and other optical converters.

The main advantage of hybrid boxes without mirror like Sony A7/A7R/NEX Fuji X and other Panasonic G / Olympus en Micro 4/3 this is their low optical printing that can adapt to mount rings to be about anything you want as an optical.

This sometimes is not possible to make such casings with the FX and Nikon DX, Optical printing is the distance between the lens ass (pardon the expression) the sensor or film plane. The English call it “flange distance”

here is what is said in Wikipediatirage optique - frange distance

The problem with Nikon is that their optical printing is higher than the other boxes with 46.67 mm against such 44 mm on Canon.

On a case Micro 4/3 c’est à peine 19,25 mm et là tout à coup vous voyez la lumière non ? Vous vous dites mais oui mais bien sur c’est pour ça qu’on ne trouve pas de bague pour mettre des optiques Canon sur les boitier Nikon. By against the reverse is possible.

Here is a list of these optical prints based on frames :

 

PENTAX 6X7 = 84,95mm

PENTAX 645 = 70,87mm

MAMYA 645 = 63,30mm

PANAVISION PV = 57.15 mm

ARRI PL = 52mm

SONY B4 = 48mm

LEICA R = 47mm

NIKON F = 46,67mm

OLYMPUS OM = 46mm

PENTAX K = 45,46mm

M42 = 45,46mm

SONY / MINOLTA A = 44,50mm

MINOLTA SR = 43,50mm

CANON EF = 44mm

CANON FD = 42mm

OLYMPUS 4/3 = 38,67mm

CONTAX / YASHIKA RF = 34,85mm

CONTAX G = 29mm

LEICA M = 27,80mm

SAMSUNG NX = 25,50mm

Micro 4/3 = 19,25mm

SONY E mount = 18mm

CANON EF-M = 18mm

FUJIFILM X = 17,7mm

C Mount = 17,52mm

NIKON 1 = 17mm

PENTAX Q = 9,2mm

 

More your case is at the bottom of the list you have more opportunity. Wholesale, all that is above the list of your mount will be consistent theory but beware, must also rely on what the English call “crop factor” thus, must keep in mind that if we take as the reference base is 24×36 (called a full frame twists or full format, but it means nothing) Next you type APS-C case (equivalent to a 35mm cinema hair ready) or Micro 4/3 ou encore une camera type Blackmagic, pocket or 2.5 k there are conversions that are not very happy and it is not marked anywhere in the instructions or on the boxes of these devices. Last thing we need is the ring, I do not think for example that there is any interest in trying to mount a Pentax 6×7 a housing on NIKON 1 for example …

And Blackmagic's specialty does not stipulate that if mounting a Canon EF 50mm on the BMCC in EF mount is as if we had mounted a 125mm multiplier is 2.39 x, it is 2x for Micro 4/3 and 3x for Pocket Cinema Camera !

So if you put a 50mm on BMPCC (BlackMagic Pocket Cinema Camera) you end up with a 150mm which will be a problem to find great angles.

Returning to our rings there are 3 kinds, purely mechanical, mechanical and electronic and mechanical + optical converter.

Novoflex is a German manufacturer who makes rings in every way but without optical conversion. This is particularly at home with their small online tool you know it is possible to marry or not. In the left column you choose your frame right optics you want to adapt … it is simple and effective. In 95% cases, if it is not on the Novoflex website is that the optical wedding / frame is against nature and it does not work. They are more expensive than some rings “No Name” you find on the bay but it's precision engineering and you will not cause you to end up with a jammed in a loose ring optics which can further cut your fingers ! Another thing they are often equipped with a manual ring diaph de-toothed which is quite significant in video shoot. Bref depuis le début de ce blog je préconise NOVOFLEX et je sais pourquoi 😉

novoflex-adaptateur-fuji-x-pro-1-nikon-f

In NOVOFLEX point optical converter, this is big news since last year, METABONES and SpeedBooster comes as a miracle solution. They also make good quality rings, it is well finished and accurate.

mb_spnfg-bmcc-bm1_01s

But they bring something to them, is the addition of a lens in the middle of the ring that reduces or completely destroy this famous “crop factor” so if you have a case of the family X FUJI SONY NEX or you can mount via a SpeedBooster optical NIKON, CONTAX, LEICA and I pass by finding the focal origin and in most cases winning 1 diaph see, it is quite magical ! The conversion factors are explained in this table you will find on their site internet

 

BMCC Matrix S-1

 

A noter aussi que Metabones propose aussi des bagues avec des lentilles spéciales pour les capteurs de la 2,5k (BMCC) et la pocket (BMPCC) qui ont des drop factors différents.

Newcomer to this little family is offering MX Camera rings WD TEC dedicated to SONY ALPHA NEX or 7 offering more steering autofocus objectives such as to drive the optical Carl Zeiss Contax G on the SONY A7 and also exist for CANON EF.

contax-g-v2

With these rings can be out of the closet old Grandad objectives and there are nuggets cheap on the net and flea photo. Caution prices rise at an incredible pace, there are still bargains to be found but some goals become rare to find.

Last but these objectives for video use / cinema have rings developed with a much larger than their modern counterparts who have been specified to be used in autofocus race.

https://vine.co/v/hYT1zWeXJrY

My favorite :

Contax series / Yashica signé Zeiss, it's fabulous and it not cost too too expensive and a special mention for the G series NEX and Afa 7

LEICA R, largest world wants, but it is fabulous lenses that are starting to become hard to find in good condition.

Leica M are often unaffordable

PENTAX K et M42 a Super Takumar à vis le 50mm f:1,4, it's just magical flair for they are not treated against it !!!

CANON FD, optical really not expensive and yet there are nuggets including 85 f:1,2 that has little to envy to its declination EF

NIKON AI and AIS also trade cheaply and it's just great even on a RED Epic !

 

SpeedBooster-NOVOFLEX-DEOTEC metabones Speedbooster deotec

J’ai gardé le meilleur pour la fin la grosse problématique aujourd’hui c’est aussi le pilotage des optiques modernes et en particulier les CANON EF. A l’heure ou le M43 rencontre un certain succès suite à la sortie des GH3/GH4 et des nouveautés Blackmagic bon nombre de ceux qui se sont rués sur les boitiers CANON 5D MKII 7D et consorts se demandent comment utiliser leurs objectifs sur un GH4 par exemple. Vous trouverez pléthore de montures qui fonctionnent très bien d’un point de vue mécanique et si vous acceptez de vous assoir sur l’autofocus, il reste un problème de taille c’est celui du pilotage du diaph car contrairement à NIKON ou de nombreux autres fabricants CANON a supprimé le pilotage mécanique du diaph par le boitier, sur les optiques EF ça se fait de façon électronique. Hors pour le moment il semble que ce soit un peu compliqué à gérer. Metabones est sur le coup et on rêve tous d’un speedbooster CANON EF vers Micro 4/3 qui piloterai le diaph et pourquoi pas le point ?

Pour le moment la seule solution très fastidieuse est de conserver un boitier canon, en effet une fois que le diaph est fixé par le boitier quand vous démontez l’objectif il reste à sa position … j’ai vu faire ça par de nombreuses personnes, c’est chiant, mais ça marche !

Pending 2 solutions existent elle sont un peu onéreuses mais totalement fonctionnelles :

MTF systems propose une bague avec une télécommande séparée qui fonctionne très bien, c’est un peu cher mais très efficace.

Front lensadaptor_0 EF to E - website_0

 

 

 

 

 

 

 

 

L’autre solution est proposée par Red Rock Micro c’est un peu le meme principe, on pilote le diaph via un petit boitier mais là il est fixé sur la bague.

3-090-0001_med

 

Il existe une bague de chez Kipon qui a rajouté un diaph dans la bague, mais je ne suis pas super satifait du résultat, beaucoup de diffraction, ça fait des trucs bizarres dans l’image.

un dernier truc qui lui semble intéressant mais pas 100% satisfaisant car il ne propose pas de lentille de conversion comme les speedbooster c’est le système holymanta … le principe est simple on cherche souvent à utiliser son objectif à pleine ouverture (ce qui est assez simpliste comme approche mais c’est la mode) pour obtenir des arrières plans flous. Holymanta cumule une bague adaptatrice mécanique avec un filtre neutre à densité variable. C’est plutôt malin et assez efficace d’après l’ami Sylvain du Laboscope.

A noter que ces 2 solutions ne proposent pas de convertisseurs optique, il faudra donc faire avec le “crop factor” du Micro 4/3 qui est de X2 je le rappelle à part pour quelques bizarreries comme la Pocket de chez Blackmagic et le GH4 qui en mode 4K est plus proche de 2,2 …

 

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DEO TEC Bagua adaptatrice Contax G Optique sur Sony Alpha 7 avec AF !

Sony Alpha 7 + Contax G / Zeiss et Bague Deo Tec

One of the problems of Sony Alpha 7 et 7R which are nevertheless excellent hybrid boxes is the lack of targets available at the manufacturer's catalog. Apart 50mm and 35mm zoom astronomical prices and not bad 28/70 there is nothing else. Les 50mm f:1,8 and signed 35mm Zeiss are excellent but totally overpriced. A big advantage of this Sony and A7 which is common to all hybrids boxes I'm talking about for years is the low optical printing (distance between the mount and the sensor) thereby fix many adapters. But then as the optical vintage we can say OK I passed on autofocus, as if these lenses are AF it is a shame to pass

DeoTec produces quite nice rings for Sony NEX and Alpha now 7 et 7R
https://vine.co/v/hYhEaQaY5OK

https://vine.co/v/hYMuMeTMEMK

What is amazing is that they have installed a small device that can control the development of optical Contax G (fabulous signed Carl Zeiss optics passage). Another adapter for optical CANON EF is also available.

How it works ?

In this case pure objectives Contax G, Ring stein information on electronic contactors E-mount Alpha 7 (it also works on the 7R and NEX) and a small motor drives the development of AF. You should know that the era of the Contax G1 and G2 the ultrasonic motors that are integrated into modern optical AF does not exist … it's not super fast, it does not suit the sports photo, but it is effective and it allows lower cost to equip the A7 or A7R superb quality objectives. For CANON EF is not so complex as the engine is in the objective. A small knob to adjust the focus manually as.

Anyway I'm pretty excited by these new rings whether or WD Metabones TEC or Novoflex there is good to be able to go antiquing optical old and be able to fully exploit these modern cameras either photo or video. Note for example that the old Leica R are also great stones that are quite sublime images on this same box.Carl Zeiss Sonnar 90 mm f:2,8

a small example of my photo model most docile of time with Sonnar 90mm f:2,8 Carl Zeiss

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My eyes, Follow Focus on USB for Canon EOS !

Everything is in the title or almost, it is society that runs Product Okiya. The wheel drives the engines of the autofocus optical Canon (and surely as the compatible Sigma / Tamron etc.)

The housings are compatible : EOS 5D Mark II, EOS 1D Mark IV, EOS 7D, EOS 60D 550D but also small and surely the new 600D

It is available for 400$ from April and pre-order here : http://www.okii.net/ProductDetails.asp?ProductCode=FF-001

It seems that the control protocol engines Canon optics are a bit more accessible. Between the Birger mount for RED One and AF101 and next RED Epic appear to directly cause these stones … in any case it's good for users.

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Kipon Canon EF lenses on Micro 4/3 with the control diaph !

Birger will not be alone on this land, c’est l’ami Philippo Church friendly Italian cinematographer encountered during the trip to Osaka, which gave me the info. Kipon therefore proposes adapter rings that are a bit all over the box <=> view but one that particularly interests me is the one that allows you to mount Canon EF lenses on micro enclosures 4/3.

For now you can buy them on the bay

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=250739038304

How have they managed this feat since unlike other brands, Canon lenses have no mechanical control of the diaphragm ?

Simple, had to think looks like the other, f-stop is the default open 100% they just had to add one in the ring !

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Repaire.net : The interview “Tester13” the hacker firmware GH1 / GF1 translated into French.

I must commend the initiative, Lair of the guys have released a few days ago the translation of an interview originally published on the site mirorlessrumors

I invite you to read all of this is quite interesting and relevant. I joined the rest of the view that Vitaly Kiselev on the fact that these industry leaders are ultimately too little listening to users like us. I just put a damper on this, les utilisateurs éclairés et exigeants que nous sommes ne représentent pas forcément la plus grosse partie des ventes de ces appareils. what's on :

http://www.repaire.net/news_tests_tutos/news/interview_du_hacker_du_gh1_201008232323/

Alternative Firmware GH1, 1080p Mjpeg 50 mb / s !

I could not not talk about, zazou a name TESTER13, designed a tool to go tickle the firmware of the GH1.

pour aller modifier le firmware du GH1

Proof is that the quality of the embedded component can do far better, the talented hacker has managed to circumvent the limitations of speed and MJPEG codec AVCHD.

You can find more information about the thing on the site EOSHD but also a complete tutorial on their wiki page here http://wiki.eoshd.com/index.php/Beginners_GH1_Custom_Firmware_Guide

J’ai un peu attendu avant d’en causer mais ça fait plusieurs semaines que le petit monde des utilisateurs de Photocam est en ébullition. The first videos posted from the famous firmware are quite promising. http://vimeo.com/12472000

[EDIT] I made a discovery, can also manipulate the firmware of GF1. I am currently a full discovery of the thing. I'll keep you posted but I can tell you that it works … attention is not an alternative to download FW, must have the soul of an adventurer geek told to go fiddling with the settings that we make available Mr. TESTER13 but it works. Y compris sur mac avec Wyne.

Manque plus qu’ils nous libère la sortie HDMI et on aura un outil de dingue. Car comme le souligne l’inénarrable P. Bloom dans son article sur le sujet le GH1 avec son processeur Venus Engine traite l’intégralité des données issues du capteur et ne fait pas de décimation comme les EOS le font. Les Canon ne traitent au final que 2 lines 5 ce qui entraine parfois des effets de moirage, ondulation et autre arc en ciel.

Au final ce firmware alimente des débats sur le constructeur Panasonic. Certains n’hésitant pas à maltraiter les ingénieurs. Mon point de vue là dessus est le suivant : Quant on s’appelle Panasonic et qu’on est un constructeur de cette ampleur, certainement le numéro un mondial de l’électronique grand public (ou n°2 je ne sais pas) on a des contraintes imposée par la multiplicité des produits que l’on sort. Si demain un tel constructeur sort l’outil génial qui remplira 100% de nos attentes, non seulement il aura du mal à vendre des évolutions de ce produit. D’autre part il va cannibaliser les ventes dans sa propre marque de produits positionné plus haut de game et plus professionnels. Ca n’excuse rien, pour nous les rêveurs que nous sommes, mais malheureusement je ne pense pas que le Photocam de nos rêves sorte un jour des usines Panasonic, ni de chez Canon, ni de chez Nikon, ni de chez Sony, pas non plus de chez Pentax …

Les seuls qui ont la capacité de nous satisfaire sont ceux qui ne font que ça. Pardon mais meme si les prochaines Camera RED sont pour la plupart d’entre nous de véritables arlésiennes … elles arriveront un jour et c’est les seuls à pouvoir se permettre de sortir des outils correspondant à notre cahier des charges rêvé. Ils n’ont pas de game pro ou pas pro, de consumer, de prossumer ou de broadcast, une seule ligne de produit avec des fonctionnalités et des performances différentes.

A moins que l’un des autres constructeurs ne décide de briser les lois qui gouvernent leurs choix stratégiques et frustrent les clients que nous sommes … Messieurs, la balle est dans votre camp !