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jpb

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About jpb

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    : Grenoble
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    Aaton Camera founder

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  1. mirrorless w/Internal 10 bits recording capabilities ? not for a while ! too much heat and battery consumption. At that price this BMD 10bit recorder/monitor really opens up the doors to a color finesse world for mirrorless cameras. For over the shoulder use, switch off the screen, click the box as a recorder to your belt, where you will also attach a cine-belt style battery, a transmitter (if needed) and a tiny permanent DC/DC camera battery charger. (ask Zacuttto to design a quick release hdmi cable/accessory for your camera
  2. MJChristensen wrote: I wish Panasonic would abandon the built-in, pop-up flash in favor of an articulated EVF. +1 ! I guess you are describing the 0/-20°/-30° tilted high-def EVF of the GX8 which makes this camera the most ergonomic filmmaking tool around : the tilt gives relief to the neck and the Leica-M position frees the left eye field of view.
  3. Dreaming for dreaming we should take into account the revolution in sensor technology which is at our door step. Pioneered by Panasonic and Fuji-film four years ago it is called OPF (organic photo sensor). ** The ida is to separate a very thin continuous light-sensitive layer (a compound of carbon, arsenic, and rare earth), from the silicon pixels which only play as electric charge collectors and gates to the output ; no more as light sensors. Panasonic announces a 3 stop increase in DR, twice the sensitivity, global shutter, and last but not the least sensitivity control (like the ISO choices offered by silver halide films). After the ISSCC (International Solid-State Circuit Conference) held in San Francisco Jan 31 - Feb 4 2016, Albert Theuwissen wrote: " Sanshiro Shishido (Panasonic) presented a paper on the global shutter version of the organic photo conductor sensor. The top plate of the photo conductor is made out of ITO and needs to be biased to larger voltages. The overall light sensitivity of the organic photo conductor depends strongly on the exact voltage on the ITO gate. A lower voltage on the gate lowers the light sensitivity and actually 0 V on the gate makes the sensor even blind. In this way one can create a global shutter functionality to the sensor \..\ (and) has the option to modulate the sensitivity during the periods the sensor is sensitive by means of adapting the high voltage set to the ITO gate." This is a real ISO modification which can control the charge accumulation into the silicon pixels to prevent clipping, There is no longer a need for any kind of neutral density filters, ever ! (note that the so called ISO sertting in current CMOS sensors only modify the pixel preamplifier gain but is located much too late in the chain. I would consider the 'Phase AF', '5 axis IBIS' and this 'Physical Sensitivity Control' as the 3 must have features signaling a next gen camera from old timers. Panasonic has an ace in his hand ** InVisage with its Quantum sensor is running in the same race.
  4. jpb

    Lenses

    hold your breath, new Canon BR thechnology will give birth to an achromatic EF 35mm f / 1,4 USM lens, October 2015
  5. Thank you Davide, the beauty of your London and the Thames river lansdscape ala Canaletto will remain in our memories. It's so rare to see so well composed images attached to the tests of a new camera !! Granted, the A7rII with its multilayered Exmor sensor will be a game changer for the film industry, it deserves the first owner's tests be at such a professional level for both the image content and the metadata presentation (perfect tempo btw).
  6. jpb

    DXO-One ergonomics

    that is the reason why the Nikon way of handling an "articulated twin element camera'' by the control screen housing is more natural and fool proof. This said (reading DPReview), the performances of this incredibly light and tiny HD camera are unique http://www.dpreview.com/articles/5778413776/dxo-one-the-world-s-first-truly-connected-camera I can easily believe thet the convolution of the Sony BSI sensor with the DXO color science expertise delivers skin tones of still unseen perfection. ​
  7. jpb

    DXO-One ergonomics

    ​these picts should help you answer my first question. Note: For cinematographers who want to use the DxOne on 'mission critical' jobs, DxO will certainly design an intermediate attachment to positively lock the lens housing to the iPhone.
  8. jpb

    DXO-One ergonomics

    Interesting concept which reminds me of the Nikpn Coolpix 995 On the DXO One you hold the 'camera' by the lens housing then orient the 'swiveling' screen toward your eye (like on all D cameras), whereas on the Nikon you firmly hold the camera by the screen (never loosing eye nor hand contact with the machine), then orient the lens housing. toward the subject; Which method is best for you? One question remains, how sturdy is the USB link between the lens housing and the iPhone?
  9. jpb

    DXO-One ergonomics

    Interesting concept which reminds me of the Nikpn Coolpix 995 On the DXO One you hold the 'camera' by the lens housing then orient the 'swiveling' screen toward your eye (like on all D cameras), whereas on the Nikon you firmly hold the camera by the screen (never loosing eye nor hand contact with the machine), then orient the lens housing. toward the subject; Which method is best for you? One question remains, how sturdy is the USB link between the lens housing and the iPhone?
  10. Is there any figure about the noise level of the Ursa-Mini cooling fan (if any)? this is a problem which still plagues most digital cameras from the latest Epic, Kinemax, ... to the Sony F65 (the still unsurpassed imager)
  11. ​Vista-RED, Alexa 65, Panavision 70, a fierce competition is now opened for big screen origination domination, and the winner will be... the one able to get the highest def, no-monster lenses. Me think it will be Panavision with it's mysterious ultra-light glass technology.
  12. Why not? All interchangeable lens cameras, mirrorless or DSLR -- in full compatibilty with the huge fleet of bayonnat mounted lenses -- should abandon their wiggling bayonet spring loaded ports in favor of the Positive Lock system pionnered by Mitchell in the '30s. Is it more expensive to manufacture? You did it for the Aja Cion and I just discovered that Kinefinity does the same thing: the "positive lock for EF/Nikon F lenses" is in good position in their Kinemax feature list: .http://www.kinefinity.com/kinemax/?lang=en " Lock ring rotation, not lens rotation to make sure EF/Nikon F lens locked firmly and to be contacted well with pogo-pin contact inside of EF mount in any case."
  13. ​but then there is a pesky caveat (à la RED Epic) found in the firmware section of their leaflet : " Fan generates noise. You can choose Record Stop in Fan setting to make FAN stop works temporarily: Fan works when live view; Stops when recording begins so that it is totally quiet when recording. Strongly Recommend fan running when recording Cineform RAW." What is your experience on this topic?
  14. Julian wrote: The XC10 opinion article on dpreview is a joke... Yes, a ridiculous one. Remember : 'editorials are becoming advertorials these days'... The only thing I like on the XC10 is its detachable eyepiece accessory which transforms the rear control screen into an EVF. Unfortunately it seems you can't easily adjust its line of view to the much more confortable -5° to -10° down earth offered by all pro cameras' viewfinders.
  15. ​I see... thanks to that foot you assemble a rock solid group made of your converter, the PL ring, the lens, the head plate, the rods and the follow-focus. The paradox is that the camera itself remains elastically suspended to the rear of the converter... but since in normal use there is no strong torque applied to these tiny cameras, the winggle problem practically disappears. brilliant idea ! I discovered on the web you even replace the Aja Cion front housing by your converter (no more foot in this case). Why not to do the same on E and µ4/3 cameras : unscrew the bayonnet mechanism of the lens port and replace it by a positive lock converter ... no foot either
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