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Thread: Is the CDHK hack not enough to make some serious compacts?

  1. #1
    Super Duper
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    Is the CDHK hack not enough to make some serious compacts?

    I don't know how widely known the CDHK hack is known but I've turned my Canon A710 IS camera into a really serious picture taking machine.

    I shoot RAW, have Auto ISO (as sophisticated feature wise as on Nikon DSLR's, min shutter speed, min/max iso to use), Hyperfocal and Infinity focus settings, Grid Screen and 3:2 overlay, Live readout of subject distance/near and far DOF/hyperfocal distance all calculated from the current aperture and focal length, ISO readout even in Auto ISO, ISO far higher than the nominal 400 and 1.5 second RAW+jpg write times (!).

    And that's just the features I'm using, there are a whole heck of a lot more including sophisticated intervalometer, etc, etc.

    You also get games, text reader, file manager, and other goodies including customisable scripting.

    I don't know any p&s that comes even close to this feature list and I paid 135 for it new. It does of course still have all the usual 'A' camera pluses of Av, Tv, Manual, single point AF, viewfinder, etc.

    I had given up on p&s's for street work, the Ricoh GX100 is nice but expensive and the viewfinder takes it out of the pocket catagory. I had the original CDHK for my Canon but the write time was 5 seconds for RAW and I hated how Canon implemented their Auto ISO, it took the IS/focal length into account which meant that you might be able to handhold it but forget stopping action! There was also the problem that the original CDHK only worked with DigicII not the newer cameras with Digic III.

    However the newer versions are far faster, work with Digic III and are far more sophisticated.

    I think I hear a G7 calling my name! Think of it, a RAW camera without the exaggerated 12 megapixels of the G9, more fully featured and most people say sharper as well. Oh and a fraction of the price. Sounds tasty to me!



    Chassidic children look through the back of the bus on the road from Jerusalem.

    Canon A710 IS, RAW, 1/25 @f3.5 iso 600
    I am not a painter, nor an artist. Therefore I can see straight, and that may be my undoing. - Alfred Stieglitz

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    Re: Is the CDHK hack not enough to make some serious compacts?

    Another thing that really excited me was the ability to use a small accessory viewfinder (on the G7) for a single focal length set to hyperfocal focus. I find the 80% viewfinder too crappy and small to compose with properly when you need to get it right in camera given how fast these tiny pixels fall apart.
    I am not a painter, nor an artist. Therefore I can see straight, and that may be my undoing. - Alfred Stieglitz

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    Re: Is the CDHK hack not enough to make some serious compacts?

    If you use it with the G7 please report back in. That could be really interesting. Once you have it on an SD card, what is the process of loading it? are you always using a card with the software on it. Have to check out used G7 prices.

  4. #4
    asabet
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    Re: Is the CDHK hack not enough to make some serious compacts?

    The CHDK hack turns the Canon A series into some of the most capable value-priced compacts around. An A650 with the CHDK hack has the same lens, sensor, and capabilities as the Canon G9 plus a better grip and a flip/twist (though smaller and lower res) LCD. As for the G7 being sharper and more fully featured than the G9, that is something I haven't heard.

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    Re: Is the CDHK hack not enough to make some serious compacts?

    I read it on DPreview so it must be true!

    p.s. I meant more fully featured with the hack enabled.
    I am not a painter, nor an artist. Therefore I can see straight, and that may be my undoing. - Alfred Stieglitz

    Website: http://www.timelessjewishart.com

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    Re: Is the CDHK hack not enough to make some serious compacts?

    The hack is loaded on the card and is loaded up into the cameras RAM automatically with switch on, soon as you take the card out the camera returns to normal, no sign of it ever being there. It's two tiny files, no big deal about having it on each card.
    I am not a painter, nor an artist. Therefore I can see straight, and that may be my undoing. - Alfred Stieglitz

    Website: http://www.timelessjewishart.com

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    Re: Is the CDHK hack not enough to make some serious compacts?

    Quote Originally Posted by asabet View Post
    The CHDK hack turns the Canon A series into some of the most capable value-priced compacts around. An A650 with the CHDK hack has the same lens, sensor, and capabilities as the Canon G9 plus a better grip and a flip/twist (though smaller and lower res) LCD. As for the G7 being sharper and more fully featured than the G9, that is something I haven't heard.

    My thoughts exactly; tho it sadly lacks the ISO dial

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    Re: Is the CDHK hack not enough to make some serious compacts?

    G7 has an ISO dial!

    To be honest with that level of Auto ISO, I don't need it, I can set the minimum shutter speed before it bumps the ISO up and what the highest and lowest shutter speeds are, with that level of control you don't need to change the ISO (except for flash use when it defaults to iso 100), it will keep the iso as low as possible till you can't handhold at which point it ups it rather than you losing the photo althogether. I would give my eye teeth for that on my 5D!

    Amin, on the DPReview tests the A640 was bested by the G7 for sharpness and noise control, I assume the same is true for the A650 and G9 though I'm going to look it up now. To be honest I didn't want more than 10 megapixels, I want a useable iso 400.
    I am not a painter, nor an artist. Therefore I can see straight, and that may be my undoing. - Alfred Stieglitz

    Website: http://www.timelessjewishart.com

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    Re: Is the CDHK hack not enough to make some serious compacts?

    Quote Originally Posted by Ben Rubinstein View Post
    G7 has an ISO dial!

    To be honest with that level of Auto ISO, I don't need it, I can set the minimum shutter speed before it bumps the ISO up and what the highest and lowest shutter speeds are, with that level of control you don't need to change the ISO (except for flash use when it defaults to iso 100), it will keep the iso as low as possible till you can't handhold at which point it ups it rather than you losing the photo althogether. I would give my eye teeth for that on my 5D!

    Amin, on the DPReview tests the A640 was bested by the G7 for sharpness and noise control, I assume the same is true for the A650 and G9 though I'm going to look it up now. To be honest I didn't want more than 10 megapixels, I want a useable iso 400.
    Ben,
    I was referring the A650IS, not the G7
    I COMPLETELY agree with you on the "MEgaPiXel MaDNesS"
    My Highest MP camera is my GRD, my K100d and S600fd are both 'only' 6MP and I have no complaints about their IQ!

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    Re: Is the CDHK hack not enough to make some serious compacts?

    Can anyone comment on the longest shutter speed you can achieve with the G7 once the hack is installed?

    Thanks!

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    Re: Is the CDHK hack not enough to make some serious compacts?

    I knew about CDHK for Digic II and have an A630 sitting around my apartment. Does anyone know if the CDHK for the older processing engine got all of the features put together for the Digic III version?

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    Re: Is the CDHK hack not enough to make some serious compacts?

    Yup! the hack is the same whatever the camera.

    Erik, I'm not 100% sure but they say that the Allbest hack will allow up to 64 seconds. Not sure the file will be up to much though due to noise with that long an exposure.

    Have a look at the CDHK wiki for all the details: http://chdk.wikia.com/wiki/Main_Page
    I am not a painter, nor an artist. Therefore I can see straight, and that may be my undoing. - Alfred Stieglitz

    Website: http://www.timelessjewishart.com

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    Re: Is the CDHK hack not enough to make some serious compacts?

    Thnks Ben!!

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    Re: Is the CDHK hack not enough to make some serious compacts?

    Just been doing some more research, the documentation is rather difficult to understand at places, you can replace a specific shutter speed with a multiple of the same (i.e. change the 1 sec speed to 10 sec) but you cannot enable additional shutter speeds. Some cameras can get from 1/64,000 to 64 seconds but unless you use it as a custom setting when loading up the camera (also available with the allbest hack) it's not available there 'on the dial'.

    I'm trying to find out what the implementation is like on the G7, doesn't seem to be that much information.
    I am not a painter, nor an artist. Therefore I can see straight, and that may be my undoing. - Alfred Stieglitz

    Website: http://www.timelessjewishart.com

  15. #15
    asabet
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    Re: Is the CDHK hack not enough to make some serious compacts?

    Quote Originally Posted by Lili View Post
    My thoughts exactly; tho it sadly lacks the ISO dial
    True. Every camera should have an ISO dial! Sadly, none of my current digital cameras have one.

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    Re: Is the CDHK hack not enough to make some serious compacts?

    Ben
    check here
    http://chdk.wikia.com/wiki/Main_Page

    antara

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    Re: Is the CDHK hack not enough to make some serious compacts?

    Antara, I just posted that link, about 4 posts up, as I said, very little information about the implementation on the G7.
    I am not a painter, nor an artist. Therefore I can see straight, and that may be my undoing. - Alfred Stieglitz

    Website: http://www.timelessjewishart.com

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    Re: Is the CDHK hack not enough to make some serious compacts?

    Sorry Ben, didn't notice
    here's another on the G7
    I used this on mine.
    http://forums.dpreview.com/forums/re...ssage=24923757

  19. #19
    Chuck A
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    Re: Is the CDHK hack not enough to make some serious compacts?

    Does anybody know what the RAW write times are for cameras like the A720, A650 and G7 using the hack? I hadn't really paid attention to the hack but now that I have read more about it it looks interesting. Also, what programs work to post process the RAW files. Are they standard RAW files that PS can use or something special?

    Thanks for the info.

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    Re: Is the CDHK hack not enough to make some serious compacts?

    There are programs which convert the CHDK RAW files to .DNG, I find DNG4powershot to be very good, if you process using the jpg metadata then the resulting DNG is very close to perfect, it uses the same WB and colour matrix as the jpg.

    Write times on my A710 are 1.5 seconds, that is blazingly fast for a p&s albeit a 7 megapixel one, they say the G7 in particular due to it's faster engine has a very rapid RAW write time.
    I am not a painter, nor an artist. Therefore I can see straight, and that may be my undoing. - Alfred Stieglitz

    Website: http://www.timelessjewishart.com

  21. #21
    Chuck A
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    Re: Is the CDHK hack not enough to make some serious compacts?

    Quote Originally Posted by Ben Rubinstein View Post
    There are programs which convert the CHDK RAW files to .DNG, I find DNG4powershot to be very good, if you process using the jpg metadata then the resulting DNG is very close to perfect, it uses the same WB and colour matrix as the jpg.

    Write times on my A710 are 1.5 seconds, that is blazingly fast for a p&s albeit a 7 megapixel one, they say the G7 in particular due to it's faster engine has a very rapid RAW write time.
    Thanks Ben. It looks like a winner.

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