Lens Hi I have seen this although the seller says it will fit my EOS 400d I cant find any compatibil

Discussion in 'Canon EOS Digital SLRs' started by CountryLover, Dec 11, 2025.

  1. CountryLover

    CountryLover New Member

    Joined:
    Nov 26, 2025
    Messages:
    2
    Equipment:
    400D
    Hi I have seen this although the seller says it will fit my EOS 400d I cant find any compatibility in Lensora and all web searches lead to it being shown on Pentax forums
    Sigma DL 75-300mm F4-5.6 Autofocus Zoom Lens Canon EF Front & Rear Lens Cap is he being liberal with the truth
     

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    CountryLover, Dec 11, 2025
    #1

  2. Caladina

    Caladina Well-Known Member

    Joined:
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    Equipment:
    Canon M50
    Canon 18-45mm m, Canon 18-150mm m, Canon 55-200mm m, Canon 22mm m, Canon 28mm m macro,
    Sigma 100-400c ef, Sigma 18-35mm art ef,
    7artisans 7.5mm m, Laowa 100mm macro ef, laowa 9mm zeroD m, Vintage M42 Lenses:
    Ashi Super - Takumar 1.8 / 55mm,
    dont know the lens at all but on searching i think that the DL and APO designations are two different lenses, the APO being the better of the two, the image you show seems to have an APO marking on it,

    from my own experience with other sigma lenses
    the lenses i have which are marked APO are indeed very good but i only go back as far as the EX series

    as for the fitment ask for images of the rear element to make sure its a canon mount or show us them from the sales blurb if you have them
    others here my know of the lens better than i
     
    Caladina, Dec 11, 2025
    #2
  3. johnsey

    johnsey Site Moderator Staff Member Site Supporter

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    Fargo, ND
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    5dMk4, 5dsR, 5dMk2, 20D, 70-200 2.8L IS, 100mm 2.8 Macro USM, 50mm 1.4, 85mm 1.8, 17-40mm 4.0L, TS-E 24mm 3.5L II, Rokinon 14mm 2.8; Pixma Pro-100
    DL is the old Sigmas without the more modern lens coatings.
    It comes in multiple brands and mounts., hence why your probably getting more results on the pentaz K mount version ..(K mount is 50 years and going, EF had a 30 year run having replaced canon FD mount, but now RF is the mirrorless mount..

    If it is indeed EF mount as advertised then it will fit on your 400d. Its a cheap lens I would not pay more than 50 for and you could probably find a better lens under 100 used with similar focal range.
     
    johnsey, Dec 11, 2025
    #3
  4. Marcus Rowland

    Marcus Rowland Member Site Supporter

    Joined:
    Apr 23, 2017
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    Location:
    London, United Kingdom
    Equipment:
    Eos 600D, Canon 18-55mm, Yongnuo 50mm f1.8, lots of adapters for other lenses
    Nikon D7000, Nikon 18-70, Tamron XR 28-300mm, Nikon AF 50mm 1.4, Samyang 8mm f3.8, Sigma EX 50 2.8D macro, Sigma APO 170-500 5-6.3D, etc.
    Panasonic Lumix G1, 14-42 3.5-5.6, lots of adapters
    Pentax K200, Pentax 18-55mm, Pentax 50mm f1.7, Helios-KM 58mm f2
    Sony A230, Sony 18-70 3.5-5.6, Minolta 50mm f1.7
    Sony A7 (full frame e-mount), 18-55, several adapters
    Sony DSC-V1 with infrared kit.
    FLIR One thermal imaging camera for iPhone
    Sorry this is a bit late. A lot of the older Sigmas for Canon will only work properly on film, since they back-engineered the control codes without knowing that more were in the chip but not actually in use on film cameras in real Canon lenses. DSLRs use slightly different control codes, and that looks like it comes from that era. Be very wary. It also looks like the black anti-slip coating is going a bit sticky, which can be horrible to work with.
     
    Marcus Rowland, Feb 28, 2026
    #4

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