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Sep 2012
FF sensor and X-mount. Does it really fit?
A reader sent me that image showing the exact Full Frame sensor size within the current X mount. Fuji stated that the X-mount was designed to fit such a sensor. But is it really true? The edges are cut. But maybe the flange distance will allow the rear projection of the lenses to cover the FF area. What do you think?
RR
8 months ago |This is presupposing that any FF camera body (which btw I don’t think will ever exist) is the same flange to sensor length as the X-Pro1. Who is to say that a FF X mount camera would not be a more traditional DSLR size and shape?
jm
8 months ago |What a dumb question! This is a technical question that only Fuji or a camera engineers can answer not someone looking at a photo mockup. This site is getting debsprate to find somwething to say and it is not a good sign,,,
Johnson C.
8 months ago |Possible for wide angle to medium tele lens. Longer tele lens seems like not possible except the lens got big rear elements close to sensor but easily been damaged..
Georgi
8 months ago |X-mount FF coverage was just misinterpreted statement!!!
Fuji officially denied FF coverage by the existing X-mount lenses!
Come on Fuji Rumors!
admin
8 months ago |Georgi. Actually you did a mistake! They said two things: 1) X mount can fit FF sensor 2) Some current X lenses do cover FF sensor. They denied statement 2) not statement 1). Come on Georgi
come on.. brake my heart again
8 months ago |Come on yourself.
‘It would not work – XF lenses could not be used with a full-frame sensor,’ said Hiroshi Kawahara
Renato S.
8 months ago |Exactly. It only says the XF lenses won’t fit a FF sensor, not that the X-Mount can’t be used by a FF sensor and FF lenses. You are also getting it wrong, Admin is right.
Mistral75
8 months ago |The inner diameter of the L39 Leica thread mount (less than 39mm obviously) is smaller than the one of Fujifilm X mount (around 42mm), nevertheless L39 lenses work perfectly with Leica M9 (their focal lengths go from 21mm up to 135mm).
John
8 months ago |They would have to redesign future lenses for it to work. Current lenses will not work with FF because they were specifically designed for a 1.5x. That’s the simple truth.
*this comment is in regard to the comment string above*
Lee
8 months ago |1) There is no point to make a bulky FF mirrorless.
2) It’s difficult to reduce the FF lens size, if the lens is going to be very fast, like f1.4, and with super fast motor.
3) The RX1 lens sticks into the body quite a bit so that the whole camera doesn’t look bulky.
4) FF interchangeable can do the same but that requires a longer flange distance. The 17.7mm of X mount seems too short.
5) And to hide the lens even more in the body, the rear element has to be very close to the sensor which brings IQ problems in the corner, thus has to use the best sensor as they can and also the rear element has to be bigger, but X mount is smaller than E mount which means big element is more likely not welcome.
6) Longer flange means the FF lens can’t be directly used on a APSC body like X-Pro1, so basically that’s a new mount. It’s pointless to make a new mount while being restricted by the size of X mount.
I guess it’s still possible, just very difficult. Or fuji just introduce another mount, another series. My bet is fuji will focus on a FF “X100″ for the moment, but IMO it won’t be X200. It will be a EVF only machine like XE1 meets X100.
pigsinspace
8 months ago |absolutely:
http://www.heise.de/imgs/18/3/7/5/3/8/0/4c38d89a338306b6.jpg
julian common
8 months ago |you cant push backwards the sensor since they have to have the same distance from the lens to the sensor else when you fit that lens into the nonFF it wont focus on infinity the only thing you can do is to cut 4 small aprts of the metal ring
Markdphotoguy
8 months ago |FF sensor will mean bigger lenses or higher prices. Lenses could be made small and good but at great expense (think Leica prices). Personally the only IQ difference I saw between my D3S and XP1 was in the degree (notice I didn’t say quality) of the out of focus areas. That being said I’ve never had a problem getting a nicely out of focus background with the XP1. I don’t mind APS-C if it keeps costs and camera sizes low so long as IQ remains high. Personally I’d rather see a organic CMOS sensor with 100MP that averages every 4 photosites (RGBG) into one pixel with full RGB info and the extra green would make for extra luminance info. Making for a 25MP sensor with extremely low noise (averaging effect plus extra luminance value per pixel), with perfect color (full RGB), no moire (averaging effect of full RGB) and sharpness (no need for AA filter or interpolation, per pixel sharpness). I’d take that over full frame any day. Just a pipe dream I know but Canon is doing something similar wrt photosite averaging for full RGB on their C300 and C500 movie cameras and Fuji’s organic CMOS would be a pixel dense sensor with ultra fast readout. I can dream.
shigzeo
8 months ago |As mentioned by Mistral, the inner diameter of L39 lenses is quite small in comparison to SLR style lenses. Mind you, fast 1,4 L39 lenses are rather large, but still less than half the volume of comparable SLR lenses.
How they could project into the camera is another thing, though. Maybe the sensor would have to be curved, or perhaps FUJI are thinking of another definition of “full frame”. Whatever happens, I’m in.
E
8 months ago |The size of the mount does not limit the size of a sensor….look at any 6×9 medium format camera…the fixed mount area is much smaller than the film negative.
Andrew Brown
8 months ago |Who cares? Really?
I’m a former 5D2 user and do not see any difference between X-Pro 1 images and 5D2 images in IQ across all the ranges.
Despite many guesses, I’ve identified very few pictures as being taken by full frame, crop or medium format – and I know of not many people that care.
Now how good a picture is – that gets them going.
If I was that keen to stay full frame I would have got a 5D3 or the new reputed 46.1mp ff beast soon to be announced by Canon!
Karen
8 months ago |I think this mount hardly will became a “FF mount”.
Look at nikon, with its old F-Mount and with all there problems to fit the electronic pins and interfaces in such a small mount.
All the mounts born in the AF era are bigger (Caono EOS, for instance), and less problematic.
Of course Leica has an old and small mount, but the lenses are manual focus and the interface between lens and body is very limited and rather weird.
Probably thre is no room for an AF lens, in an M-mount.
Fuji hardly has made such a mistake, limiting itself so much…
K.
Vladimir
8 months ago |Fuji FF ob Sony-NEX FF, faster and cheaper
Lee
8 months ago |Check this:
http://translate.google.com/translate?sl=ja&tl=en&js=n&prev=_t&hl=en&ie=UTF-8&layout=2&eotf=1&u=http%3A%2F%2Fegami.blog.so-net.ne.jp%2F2012-09-26
Sony curved image sensor patent. This may be useful for future FF interchangeable mirrorless.
Karen
8 months ago |No Lee,
This could be useful only in a fix lens (and fix focal) mirrorless…
With a sensor this shape, you must develop every lens specifically for it, and you can not use a lens developed for a usual, flat sensor.
It means you must have a lens specifically for one single sensor….
Too expensive for a intercheangeable camera, don’t you think?
I see the patent’s application only in some cheap camera, with a very small sensor and a fix, unexpensive lens.
It’s the only camera in which this kind of sensor would make sense.
K.
Cognoscenti
8 months ago |X-mount will never fit a FF sensor. The distance to the metal contacts doesn’t allow it. The corners of the FF sensor are also masked by the mount.
This means of course Fujfilm need to come up with a new lens mount and that won’t happen for a long time.
The only way for Fujifilm to get out a FF mirrorless is do as Sony did with RX1. A fixed lens FF camera.
FuzzyWasHeBear
8 months ago |I use an adapter to put FF lenses on my X-Pro1. If they did make a FF mount then there will be a fuji adapter to fit. Why doesn’t someone with an X-mount lens test this off camera with the sleeve of a changing bag and a torch? then measure the image circle made at X-mount flange distance. I would do it myself but I only use legacy lenses.