AXIOM Beta

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1 AXIOM Beta Topics

1.1 Active Battery Mount

20140930134156-BETA Zeiss Battery2.jpg

Battery mount for NP-F970/F750/F550 batteries to power the AXIOM Beta. Includes power usage and capacity monitoring to estimate remaining charge and time remaining.

More Thoughts on Power.

1.1.1 InfoLithium Protocol

Proprietary protocol from Sony that exchanges metadata between batteries and devices. Expected data inside the protocol includes: charge cycles, battery ID, remaining total capacity, remaining current capacity, etc. Only official Sony batteries incorporate this protocol, cheap replacement parts don't and some Pro Sony cameras refuse operation with batteries without InfoLithium communication. Decrypting this protocol could give us more insight into the battery but is not essential as we can measure the discharge curve and estimate remaining capacity rather accurately that way.

1.1.1.1 Hacking References

http://randybuildsthings.wordpress.com/2013/02/25/sony-infolithium-m-teardown/

http://www.dpreview.com/forums/post/4296759

1.2 Dictator Remote Controller

Dictator-render-V2-03.jpg

https://apertus.org/dictator

Dictator

1.3 Lens Mounts

Picture of a Nikon F bayonet mount.
Mount Nikon F Canon EF Micro Four Thirds
Type Bayonet
Compatible Lenses Nikkor FX Nikkor DX EF EF-S (optionally)
Image Circle Size Full Frame
ø 43.3 mm
DX
ø 28.4 mm
Full Frame
ø 43.3 mm
Canon APS-C
ø 27.3 mm
"Half Frame"
ø 21.6 mm
Throat 44 mm 54 mm ~38 mm
Flange focal distance 46.5 mm 44 mm 19.25 mm
Axiom Beta
Sensor Compatibility
16mm
Four Thirds
Super35
16mm
Four Thirds

More Details: Lens Mounts

1.3.1 Passive EF Mount

1.3.2 Passive Nikon F-Mount

Measured Bayonet Thickness: 1.3mm

1.3.3 Passive Micro Four Thirds Mount

1.3.4 Active Canon EF Mount

1.4 4K RAW PC recording option

20141007124425-4kraw-pc-based.jpg

1.5 Enclosure Design

Body Design Options

Cooling

Switchable ND Filters not planned currently

1.6 Electronics

1.6.1 AXIOM Beta PCB Stack Concept

PCB-Illustration-01.jpg

Seen from the back side:

Beta pre03 1024x640.png


1.6.2 Image Sensor Frontend

It is planned to incorporate a glass filter slot between lens mount and lens base for placing an IR-cut-off filter or OLPF with IR-cut-off coating in the light path.


for Truesense KAC12040

Dimensions (inches if not stated otherwise):

Kac12040SensorFrontEndDimensions01.jpg

1.6.2.1 Image Sensors

Graphic that compares the different Sensor Sizes and Lens Image Circles of the Axiom Beta
Axiom Beta Model 16mm Four Thirds Super35
Brand CMOSIS ON Semionductor
(prev. Truesense/Kodak)
CMOSIS
Model CMV2000 KAC12040 CMV12000
Type CMOS
Shutter Type Pipelined Global Shutter Global & Rolling Shutter Pipelined Global Shutter
Color filter Array Bayer (Color model)
None (B/W model)
IR filter no
Anti-Aliasing Filter (OLPF) no
Size 10.6 mm × 5.94 mm
ø 12.1 mm
18.8 mm × 14.1 mm
ø 23.5 mm
22.5 mm × 16.9 mm
ø 28.2 mm
Crop Factor Full Frame ∕ 3.56
16mm Film ∕ 1.05
Full Frame ∕ 1.84
Four Thirds ∕ 0.96
Full Frame ∕ 1.54
Super35 ∕ 1.10
Aspect Ratio 16:9 4:3 4:3
Pixel Resolution (h × v) 1920 × 1080 4000 × 3000 4096 × 3072
Pixel Size 5.5 µm 4.7 µm 5.5 µm
Dynamic Range 10 stops
15 stops (HDR mode)
9.3 stops (Gobal Shutter)
12 stops (Rolling Shutter)
10 stops
15 stops (HDR mode)
Sensitivity 200 ISO ~ 400 - 1250 ISO
Max Frame Rate @ Bit Depth 340 fps @ 10 bit
70 fps @ 12 bit
110 fps @ 8 bit
70 fps @ 10 bit
30 fps @ 12 bit
10 fps @ 14 bit
300 fps @ 10 bit
180 fps @ 12 bit
More info

1.6.3 IO Modules (Shields)

1.6.3.1 Left

seen from front of camera

Io shield l.png

Dimensions (inches if not stated otherwise):

PCBModuleLeft01.jpg

1.6.3.2 Right

seen from front of camera

Io shield r.png

Dimensions (inches if not stated otherwise):

PCBModuleRight01.jpg

1.6.4 Dual Micro SD Module

This module adds two micro SD card slots to the AXIOM Beta. The active slot can be switched via the card driver and both cards share a 50MByte/s interface to the Zynq. The external slots can not be used for initial booting of the camera.


1.6.4.1 PCB Top

I2.png

1.6.4.2 PCB Bottom

I.png