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First Pentax MF

Maoby
May 23, 2023
chat_bubble_outline 30
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  • link
    DonaldB
    Members 2419 posts
    June 29, 2023, 10:11 p.m. June 29, 2023, 10:11 p.m.
    link
    @JimKasson has written:
    @Maoby has written:

    I was talking about macro photography, and every photographer knows very well the difficulty in obtaining an acceptable depth. and it is easier to obtain a greater depth of chap with a Β΅4/3 than with an FF (The pros and cons go both ways)

    When I do macro work, I stack, either with a Cognisys rail or focus bracketing.

    I agree .larger sensor is much better for stacking extreme macro work. the larger sensor and larger pixels produce less noise than the m43 sensors. when you stack say 40 images using zerene the program stacks the noise into blobs and very hard to remove. i find my sony a6300 stacked images much cleaner and sharper detail and basically no noise removal needed at all at mags of 10x and 4x. havent put my a7iv to the test yet it has even bigger pixels. the a7r2 was basially the same as the a6300. dont get me wrong i have taken some great images with m43 but apsc and FF for macro is better, smaller sensors are easier to shoot macro and get good results ,but for ultimate IQ larger is better.

  • link
    IliahBorg
    Members 976 posts
    June 29, 2023, 10:32 p.m. June 29, 2023, 10:32 p.m.
    link
    @DonaldB has written:

    larger pixels produce less noise

    Pixel size has very little to do with it.

  • link
    DonaldB
    Members 2419 posts
    June 29, 2023, 11:37 p.m. June 29, 2023, 11:37 p.m.
    link
    @IliahBorg has written:
    @DonaldB has written:

    larger pixels produce less noise

    Pixel size has very little to do with it.

    do with what ? stacking a clean image ?

  • link
    IliahBorg
    Members 976 posts
    June 29, 2023, 11:56 p.m. June 29, 2023, 11:56 p.m.
    link
    @DonaldB has written:

    do with what ?

    Start a thread, if interested.

  • link
    DonaldB
    Members 2419 posts
    June 30, 2023, 1:46 a.m. June 30, 2023, 1:46 a.m.
    link
    @IliahBorg has written:
    @DonaldB has written:

    do with what ?

    Start a thread, if interested.

    Not interested just shot a 6x live bug with my A7iv. larger pixels win hands down. the most detail and noise free extreme macro i have shot to date ,and i mean pixel level sharpness 😎😁😜

    quick and dirty test shot.

    moth 1.jpg

    moth 1.jpg

    JPG, 8.1Β MB, uploaded by DonaldB on June 30, 2023.

  • link
    IliahBorg
    Members 976 posts
    June 30, 2023, 1:51 a.m. June 30, 2023, 1:51 a.m.
    link
    @DonaldB has written:

    larger pixels win hands down

    You are wrong again.
    Ciao.

  • link
    DanHasLeftForum
    Members 4254 posts
    June 30, 2023, 2:16 a.m. June 30, 2023, 2:16 a.m.
    link
    @DonaldB has written:

    Not interested just shot a 6x live bug with my A7iv. larger pixels win hands down.

    At best that can be considered just your opinion and nothing more because you haven't posted anything that you compared it to in order to come to that conclusion and secondly because you are a proven liar on these forums.

    Who knows where that image actually came from and what post processing and editing might have been applied to it after the raw data was acquired πŸ˜€

    dprevived.com/media/attachments/27/91/aAr96IpuIEmK63CKAYCYCaqpLs8oOLAs1nVM8qk1s7yLXb5ACDXhT2ugqD3wHvFI/eatingpopcorn2.gif

  • link
    tprevatt
    Members 515 posts
    June 30, 2023, 2:50 a.m. June 30, 2023, 2:50 a.m.
    link

    The beauty of a CCD sensor is all pixels are exposed simultaneously and the exposure is halted and the data is β€œmarched” off sensor for the ADC and follow on digital processing. That is a global shutter. It will be awhile before CMOS sensors have global shutters.

  • link
    DonaldB
    Members 2419 posts
    June 30, 2023, 3:12 a.m. June 30, 2023, 3:12 a.m.
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    @IliahBorg has written:
    @DonaldB has written:

    larger pixels win hands down

    You are wrong again.
    Ciao.

    this technique is above your pay grade.

  • link
    DanHasLeftForum
    Members 4254 posts
    June 30, 2023, 3:15 a.m. June 30, 2023, 3:15 a.m.
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    @DonaldB has written:
    @IliahBorg has written:
    @DonaldB has written:

    larger pixels win hands down

    You are wrong again.
    Ciao.

    this technique is above your pay grade.

    The technique itself is not being questioned.

    It is the quality of its execution and the source of the actual image that is doubtful 😎😎 given your history here and on dpreview.

  • link
    barondla
    Members 331 posts
    June 30, 2023, 5:29 a.m. June 30, 2023, 5:29 a.m.
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    @Maoby I'm not comparing picture quality of a Disc camera to that of a FF EOS. Obviously the EOS wins. What I'm saying is the Canon is bigger than many medium format cameras, but only manages to expose a 24x36mm rectangle. The film/sensor size compared to camera size is inefficient. There may be good reasons for the inefficiency, but it still is a measure of camera design.
    Thanks,
    barondla

  • link
    Maoby
    Members 1600 posts
    June 30, 2023, 2:04 p.m. June 30, 2023, 2:04 p.m.
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    @barondla has written:

    @Maoby I'm not comparing picture quality of a Disc camera to that of a FF EOS. Obviously the EOS wins. What I'm saying is the Canon is bigger than many medium format cameras, but only manages to expose a 24x36mm rectangle. The film/sensor size compared to camera size is inefficient. There may be good reasons for the inefficiency, but it still is a measure of camera design.
    Thanks,
    barondla

    Thank you for your enlightening comment πŸ‘πŸ»

    But all the monoblocs of the time (DSLR) had considerable volume.

    live.staticflickr.com/1582/25738179225_d508a300e1_b.jpg
    Canon EOS-1D (2001) / Nikon D1x (2001)
    by Marc Aubry, sur Flickr

    live.staticflickr.com/65535/33875522998_265624d197_b.jpg
    Canon EOS-1D (2001) / Nikon D1x (2001)
    by Marc Aubry, sur Flickr

    What's more, the Canon EOS-1D is equipped with an APS-H sensor, and the Nikon D1x has an even smaller APS-C sensor.

    And if we go back even further in time, the EOS DCS 5c has a 1" mini sensor with a multiplication factor of 2.6x.

    Here it's the EOS-1D MK IV that looks tiny. πŸ˜„

    live.staticflickr.com/65535/52334680125_f7e4d041ae_b.jpg
    Kodak Canon EOS-1n DCS 5c (1997) / Canon EOS-1D Mark IV (2009)
    by Marc Aubry, sur Flickr

    barondla likes this.

    favorite 1

  • link
    bobn2
    Team 2240 posts
    June 30, 2023, 2:19 p.m. June 30, 2023, 2:19 p.m.
    link
    @barondla has written:

    What I'm saying is the Canon is bigger than many medium format cameras, but only manages to expose a 24x36mm rectangle. The film/sensor size compared to camera size is inefficient. There may be good reasons for the inefficiency, but it still is a measure of camera design.

    Simply, I think that the target market prefers it that way. The canon EOS 1 series was detachable grip until the 1D. Nikon invented the integrated grip in the D5, and carried on with their digital cameras. I think that the main thing is that a digital camera for sports/PJs needs a load of battery.

    barondla likes this.

    favorite 1

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