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Anmol Mishra

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    List of FAST ultra wide and fisheye lenses < 15mm

    in Russian Gear

    Posted

    I am going to try and catalog FAST Russian ultra wide and fisheye lenses wider than 15mm.

    5.9mm / F1.8 OKS-1-5.9-1

    10 mm /f1.8 OKS-3-10-1

    12.5 mm OKS-1-12.5-1

     

    The reason for this is that any crop sensor can easily choose from a variety of cheap lenses from the SLR world for fast telephoto lenses.

     

    It is next to impossible to find a decent ultra wide lens at f1.8 or faster at a micro 4/3 or 35mm movie sensor size.

    The only one I know of is the Kinoptik Tegea 5.9mm f1.8 which is bloody expensive.

     

    Perhaps some knowledgeable persons can add to this database with more fast lenses.

    Cine Lenses on the GH1

    in Lenses & Lens Accessories

    Posted

    Hi Olex. Which C-mount or 16mm lenses have 35mm coverage ?

    Can the mask at the rear be removed for greater image circle ?

    I subscribe to a Tim opinione.

    Macro 4/3 cameras ( Panasonic G1, GH1, GF1, G2, G10 , Olympus PEN E-P1, E-P2, E-PL1) have sensor with 22.5 mm diagonal.

     

    Normal 16 film gate 10,1 x 7,45 mm, diagonal 12.55mm

    Super 16 film gate 12,35 x 7,45 diagonal 14,42 mm

     

    35 mm

     

    Academy 35 mm, film gate 22x 16 mm, diagonal 27,2 mm,

    Super 35, film gate 24 x 18 mm, diagonal 30 mm.

     

    You can see, the sensor with diagonal 22,5 mm can cover of academy 35 lenses only.

     

    But, As of russian lenses, a some professional cine lenses of 16 mm cine cameras use of optical blocks from 35 mm cine cameras ( from 50 mm ), that's why, theoretically, this is lenses can cover of a Macro 4/3 sensor.

    But, 16 mm lenses with optical blocks from 35 mm cine camera can have special mask at rear side of lens and mask will diminish final diameter of image circle.

    That's why, the lens compatible or not can asnwer optical technician only after special test.

    NEW D&A-1 720p Camera!

    in HD

    Posted

    I am doing a project using a DXC9100P 3-CCD 1/2-inch sensor PAL camera for a DIY cam. I am thinking of mounting a PC board as well. The Analog DXC offers VGa output @ 25fps AND 50 fps which I will ingest using a framegrabber card.

    On the current topic, it should not be a problem integrating a PC board in a housing. The problem is the Center of mass. With the camera and the lens I think it may already be "front heavy"

     

    Just wondering if any of you would think there is a market in making camera mounted PCs. I am thinking of designing a PC with screw mount so it can be mounted on top of the camera.

    This PC will have slots for a battery and a hot shoe mount on top as well to attach a touchscreen.

    There are tons of people trying to build their own..

     

     

    Saulie:

     

    I have thought about all those things that you mentioned.

     

    First, you need a computer to record from this camera. Like I said before, you can carry the laptop and 2 batteries in the backpack.

     

    You don't need to see them or touching them for anything (For now just the on/off switch like I said before)

     

    You can control everything from the 7"LCD monitor. The c-mount lens is a manual one, you control focus and lens aperture with it.

     

    When you set up your camera for sharpness, gamma, saturation, frame rate, AOI pixels etc. You barely will use the monitor, except for record and stop.

     

    The software saves the last used settings, so you wont have to do this every time. Probably White balance only.

     

    But since you record to CineForm Raw directly, you can change that in post also! (In Premier Pro with CineForm Prospect 2K installed).

     

    With a 16GB Sandisk CF card, you can record like an hour of CineForm Raw-12 (12 bit) High Quality video with sound!

     

    If you fill out the CF card, you can remove it easily and put an empty card for more recording.

     

    Soon 32GB and 64GB cards will be available for the consumer market. Imagine how many hours you will be able to record with out removing the CF card (which is easy to do anyways, but then you have to create a new directory in Streampix that will take a few seconds)

     

    Or you can have another card reader and CF card ready (in a USB port) to use right away!

     

     

    The D&A-1 720p camera with the monitor and mic is way to much lighter than a Varicam for sure, that weights 16.8 lbs "in operation".

     

    Actually it weights almost like my DVX-100 camera mounted in the same bracket. I need to weight both to tell you for sure.

     

    The laptop barely weight 5 pounds. Each battery probably 1 lb. I rather have the weight on my back (or chest) than in my arms and shoulder.

     

     

    If i had the resources of Jim Jannard, probably I will built an integrated PC in the camera. It can be done like in the SI-2K camera or in the Red camera BTW.

     

    But such design and manufacture would increase the price significantly. The complete SI-2K camera package is close to 20K isn't?

     

    This is a "poor-men Varicam" style camera. I did not have to design anything (except for some modifications in the shoulder support).

     

    All of the components are "off the shelve" ones. You can buy them almost everywhere in the world.

     

    Yes you can mount the camera in a tripod. Actually the video of my son David was made with the Pike F-145c camera in a tripod by itself.

     

    In the support shown in the pictures on my site, there is a threaded hole in the bottom rail to put a tripod adapter.

     

    That way you can use a tripod in a hurry with out having to take the camera, monitor and LCD screen off the bracket!

     

    I will post more videos (color corrected with Finesse 2 this time) in the near future on my site.

     

    I think that this camera will fill a need of Independent producers like me that don't have fortunes to spend in a camera system...but like the BEST quality their money can buy!

     

    Actually this camera can be used for HD event videography as well!

     

    Try that with a 1/3 HD camcorder....

     

    Can you get a constant f1.2 aperture zoom (6x) lens for $315 for the Varicam camera?

     

    You can get a 2/3" 12.5mm-75mm f1.2 lens for this camera for that incredible price of $315!

     

    Thanks,

    Cesar Rubio.

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