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Posts posted by NeuroJitsu

  1. Adding to my above post, this article is interesting: https://blog.sigmaphoto.com/2021/sigma-fp-l-camera-quick-guide-features-photos-faqs/

    It doesn't major on the sensor being full frame, but rather on the 61 megapixles...

    In CineD's review of the camera, they quote from a conversation with Sigma's product manager for the fp cameras, Wakamatsu-san as follows:

    "For now, please see below the recommended crop factors for EACH scenario: 

    For the best Resolution, x1.3 – 2.48 

    For phase detection AF, x1.0 and x1.53

    For best dynamic range, x1.24"

    This reinforces that the sensor's FF size is not so much the point of this camera as its colour science and the way it uses those 61 MPs... but I'm no expert, just an interested customer and fan of Sigma products!  I'll be waiting to see more footage from the camera before I upgrade my now ancient GH4 LOL!

  2. 13 hours ago, Andrew Reid said:

    I don't get why he went so negative on it.

    Overall, there aren't many RX1 sized cameras with interchangeable lenses and the latest 61MP full frame sensors.

    On the video side, not many full frame cameras do internal Cinema DNG without Magic Lantern's help either.

    I think the tendency of youtuber reviews is to focus on specs and camera comparisons, rather than use cases and who/what the camera is intended for.  I guess it's easier, and controversy always gets the 'click'... I like Gerald's channel but this video missed the mark for me.

    I'm really liking this camera for its compact travel friendly size, modularity, those colours and its focus on great images straight from the camera (rather than leaning on fix it in post).

    It seems to me this suits the photography-schooled shooter who likes the minimalist gear approach, for both stills and video.  But s/he neednt forego the possibility to rig it out... the best of both worlds it seems to me.

    For some people or uses, this modularity and form factor is unique. For me, it beats the cinema box cameras hands down.  That it's not a mainstream film maker's tool is not the point. As any craftsman knows, it's all about "right tool for the right job". 

    Granted, rolling shutter and low light are not its strength. But that's a decision by design. All good design is founded on clear choices... and based on knowledge of the intended user... Gerald Undone wasn't wrong about the camera, but he was wrong IMO to rubbish the camera because it doesn't fit his personal needs and preferences. What's the point knocking a screwdriver for being a bad hammer?

    Finally, there is just plain commercial logic.  Sigma is not trying to be Sony. That would not work: their brand, loyal customers and engineering and marketing heritage and strengths are different. We should celebrate the choice we have...

  3. On 11/3/2020 at 2:37 PM, NeuroJitsu said:

    Many thanks for the comprehensive answer.  My order is now placed!

    a supplementary question to this one, thinking about mounting options on my rigs: what is AFX's  possible mounting radius (assuming the unit is mounted sometimes beside or below the camera, as well as above on a hotshoe) from the lens?

  4. On 10/30/2020 at 2:13 PM, BTM_Pix said:

    Yes and then it stores them in its database for recall as and when you need them.

    For the BM cameras, this recall is automatic as we can read the camera name from the lens as soon as you attach it but for other cameras it will have to be selected from a list.

    When you calibrate the lens for other cameras you select each element from a list so :


    MODEL >> 1,2,3,4 etc

    LENS BRAND >> Canon, Nikon, Sigma etc

    LENS MM >> 18,20,24,28 etc

    LENS F >> 1.4,1.8,2.0 etc

    SUB >> 1,2,3,4

    The reason that the MODEL field is numeric is that an exhaustive list of every model from every manufacturer is to cumbersome to manage, the storage space is better used elsewhere and we would be needing to issue firmware updates every time a new model is released. So if you have an A7Riii, an A7Sii and an A6500 then you are going to have to decide for yourself which one you designate as 1,2,3,4 etc.

    Realistically, if you have two Sony full frame cameras and mount the AFX in the hotshoe then you will likely not need to calibrate for each camera but it takes less than five minutes and is only done once so its not much of a hardship.

    With regard to SUB that is there for if you have multiple lenses that share the same brand, focal length and f stop as a way to differentiate them and again in the interests of overhead the onus is on the user to decide that.

    In terms of capacity, there is one but its set at a level that can accommodate all of the cameras and lenses owned by @Andrew Reid so the rest of us will be barely scratching the surface 😉 

    Many thanks for the comprehensive answer.  My order is now placed!

  5. On 10/28/2020 at 7:22 PM, BTM_Pix said:

    No, as with the the electronic lenses on the P4K/6K, everything is done on the AFX itself with the controller.

    You tape a focus target on a wall (nothing fancy, anything contrasty will do so you can just put a piece of newspaper up if you want), focus the lens at minimum focus with the controller operating the focus movement, mark the point using the A button on the controller and this stores the focus point with its associated distance.

    Move back, re-focus, re-mark etc until you reach infinity and thats it done.

    Takes no more than 5-6 minutes per lens and only has to be done once as the calibration is stored on the AFX in its database and re-loaded when you put that lens on.

    In the case of the P4K/6K it is done automatically as it can read the lens name but for motor versions you just select it from a list.

    If you want to re-calibrate for any reason, you can pick the particular lens from the database in the setup menu, delete it and re-do it.

    As above, no app required as everything is mapped to buttons/joystick positions on the controller.

    Left Stick - Toggles between AF-S and AF-C

    Right Stick - Cycles through focus transition times for QuadLock

    Stick Up/Stick Down - Manual Focus (far/near)

    Top Trigger - Record Start/Stop (P4K/P6K Only)

    Bottom Trigger (Short Press) - AF ON/OFF (in AF-S mode re-triggers focus)

    Bottom Trigger (Long Press) - Engage/Disengage QuadLock focus target limiter

    A (Long Press ) Store current focus position in QuadLock Position A

    B (Long Press ) Store current focus position in QuadLock Position B

    C (Long Press ) Store current focus position in QuadLock Position C

    D (Long Press ) Store current focus position in QuadLock Position D

    A (Short Press) Move focus to QuadLock Position A (sets target to A if focus target limiter engaged)

    B (Short Press) Move focus to QuadLock Position B (sets target to B if focus target limiter engaged)

    C (Short Press) Move focus to QuadLock Position C (sets target to C if focus target limiter engaged)

    D (Short Press) Move focus to QuadLock Position D (sets target to A if focus target limiter engaged)

    In addition, the operation mode for buttons A,B,C,D can optionally be set to Command mode for P4K/6K where functions such as Aperture/ISO/WB etc can be mapped to them.



    If you use the AFX on different cameras, I'm assuming you need to calibrate for each camera assuming the AFX mounting point (in relation to the lens) varies across cameras.  Can you simply store different camera presets for each lens?  Is there any limit to the number of stored lens calibration presets?

    I'm close to ordering, this looks fantastic.  Just want to make sure I understand the practicalities of using it across different cameras.  



  6. The other factor I think is under-played in your analysis is the impact of Chinese manufacturers.  The know-how and capability of Chinese manufacturers has piggy-backed on the big Japanese camera companies and American big tech firms that have production plants in China.  And so the economics of the industry has changed, and I would imagine this is a challenge for incumbent brands: how do you get a return on your R&D spend, and sustain that spend, when the Chinese manufacturers are racing ahead now and pricing aggressively?  

    Blackmagic and Atomos have found their ways of doing it.  Interesting times.

  7. I'm a fan of the micro four thirds format, and the access it provides to lots of glass.  Personally, I'm waiting to see what the GH6 looks like before deciding where I go next from my GH4.  Frankly, the GH4 has all the capability I need aside from a bit more dynamic range at times, and better low light capability.  A GH5S might be my next step, rather than the GH6 - but I probably won't be able to resist all the new bells and whistles...

    I'd be more inclined to look at the Sigma FP than this new Sony camera, and be forced to change all my glass.  Lately, I've been finding I'm even enjoying my old BMCC 2.5k and Micro cameras, shooting in lower resolution raw that looks lovely and is a pleasure to work with in post.  My work is not seen on big screens, but on a computer, so as you say the MP race is just irrelevant to me. 

    I used to work in the telecoms industry in the early 2000s before the iPhone spoiled the party for the incumbent phone manufacturers.  Remember how big Nokia used to be then?  I think the camera market is crying out for a step forward in usability, which is what the iPhone did for the phone market.  What Apple have done for creatives is what I think Blackmagic have set out to do for film-makers, and I think they illustrate very well the importance of improving (through innovation) the end to end workflow, and especially software.  

    I'm now more interested in post production software innovation, like Cameralabs AI product for colour grading, than chasing more resolution.  That's something that will make a real impact, day-to-day, on my creative output, productivity and frankly enjoyment - and if the manufarurers improve these things, the industry will find ways to expand.

    I've no doubt you're right that some more camera manufacturers will fall by the wayside.  I hope Panasonic is not one of them, as I think they've done a fantastic job of bringing innovation to market in packages that are designed in a way that puts function first and respects customer choice.  I'm encouraged by Sigma's direction and quality of their products.  And of course Blackmagic.  And then you have Z-cam, DJI and other Chinese brands that have both pushed prices down and produced excellent products.  And even though I'm as astonished at Canon's arrogance as you are (ie throttling the performance of their expensive R5), they do still make fantastic cinema cameras.  So the industry direction overally is not looking so bad IMHO.





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