Announcement: AstrHori 28mm F13 Macro 2:1

On October 31, 2022, the AstrHori 28mm F13 Macro 2:1 lens was announced.

AstrHori 28mm F13 Macro 2:1

AstrHori 28mm F13 Macro 2:1

Basic properties

Appearance

AstrHori (RockStar R)

Medium Format FujiFilm GF/GFX:

Full frame:

APS-C:

AstrHori/RockStar lenses can be found on Aliexpress from an authorized dealer.

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Material prepared Arkady Shapoval. Training/Consultations | Youtube | Facebook | Instagram | Twitter | Telegram

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Comments: 13, on the topic: Announcement: AstrHori 28mm F13 Macro 2:1

  • Alexander

    There is an obvious error in “Basic Properties”: Maximum magnification ratio: not 1:2, as it is written, but 2:1, as in the name of the lens ...

    • Arkady Shapoval

      Fixed

  • Igor

    750 dollars and you can take pictures of fish at the aquarium. Tsіkavo, and stink also mayut the version of the periscope yak laov?

  • Alexander Rifeev

    •Relative aperture: 1:13-1:40

    alas, the diffraction limit of CPC matrices is reached much earlier: Canon 6D - at an aperture of about 10,5; for Canon 500D - with an aperture of about 7,5; Nikon D600 - with an aperture of about 10,1; and only Nikon D700 has it with an aperture of about 14,0 ... and it turns out that this lens is not suitable for macro photography?

    • Arkady Shapoval

      It turns out that not so terrible dp as it is drawn. Or with ordinary macros they don’t shoot below f13?

      • Alexander Rifeev

        depending on what format to print photos or on what monitor to watch photos - most monitors - 1,5 -2,0 MP - the phenomenon of diffraction will be noticeable if you start to enlarge images with the PC engine :-))) yes, macro is also shot with “normal” apertures - and the depth of field is as thin as a paper leaf :-)

        • after all

          Aperture 22 and all right with the flu. The price bothers me more. A 2:1 magnification is achieved with ordinary penny lenses with macro rings. But there you have to focus by moving the camera, which is very inconvenient. Well, the main disadvantage is that there is no distance to the object. It’s interesting that this lens can focus in macro mode and how they generally achieved a 2: 1 magnification with a focal length of 28mm at a distance of 48cm.

          • Rodion

            This lens is essentially an endoscope. It differs from a conventional lens in that an intermediate image is built in it several times, that is, one can say that this lens consists of several lenses connected in series. In the plane of intermediate images, there are usually field lenses, which help to combat vignetting and aberrations very effectively. Well, such a scheme allows just to achieve such unusual parameters.

            • after all

              I am not strong in all this, therefore it is not clear. If you connect two lenses, then the focusing distance turns out to be very small, the endoscope also looks back to back, and here it is 45 cm.

              • Konstantin

                45cm from the matrix, not from the front lens.

              • Rodion

                Even from a matrix for such a scale, this is a lot.

    • Igor

      No, I'm not good about Nikon D700. Signing and on F16. On the D3200, knowing on the F16 https://500px.com/photo/1012487800/babochka-polevaya-by-igorь-dmitriv i on D90

      • Alexander Rifeev

        df \u16d 14 practically df \u3200d 16 ... on the DXNUMX with such df \uXNUMXd XNUMX - this is at what magnification to print a photo or view it on a monitor :-)

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