New lens patents: Tamron SP 85mm f/1.4 Di VC USD and Sigma 30-300mm f/2.8-3.5 Super 35

Two new patents from Tamron and Sigma:

Tamron SP 85mm f/1.4 Di VC USD full frame DSLR lens
Tamron filed a patent for a SP 85mm f/1.4 Di VC USD full frame DSLR lens.

Sigma 30-300mm f:2.8-3.5 Super35mm lens patent
Sigma filed a patent in Japan for a 30-300mm f/2.8-3.5 Super 35 lens. Maybe Sigma is getting also into the cinema lens segment?

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  • joking

    Tamron is off to a great start at making quality primes. Both the 35 and the 45 they recently released are excellent!

    • fanboy fagz

      that 15-30 VC is even a slightly better performer than the unbeatable 14-24 AFS. and adds more range and VC for $1200.

    • Zos Xavius

      Tamron always had some gems. Their adaptall 28mm is one of my favorite vintage lenses.

    • Other than the Severe color fringing.

      • Zos Xavius

        It depends on the lens. Their macro is superb and does not have severe fringing. Many of their better vintage lenses do not have severe fringing either compared to their first party counterparts. I guess if you dig from the bottom of the tamron barrel yeah.

        • I am referring to the new SP 35mm and 45mm lenses specifically. A few reviews(with samples) showed how “severe” the problem is.
          The 15-30 is pretty good.


    Tamron sure make great optics. HOWEVER, everything else inside the lens that work with the optic are problematic, at best.

    When AF on a far subject it often results to out-of-focus. I went to Tamron’s local office and they could’t solve it, the best they could do is to make the lens work in close distant.(They are super nice BTW, I guess that is a plus?)

    The lens identities, whether the lens is a 90Marco, 70-200vc or 24-70vc are mixed up(according to my test, 15-30 is fine), meaning the AF adjustment you made on one lens will carry to another.

    All these problem were spotted on a D800E with Tamron F mount lenses, however, other users have spotted the same problems on EF mount.(

    • Yes, the Tamron 15-30mm is a pretty amazing lens. I use it on a D5500 for roughly a 24-48mm FF equivalent lens. Positives: Its good for tight spaces like small isles and hallways of convention centers. Focus is fast and accurate(better than the Sigma 24-35). Negatives: The colors are a little flat and even at 2.8 there is no bokeh(some reviews have mentioned this as well). The background just always stays “sharp”, Its weird. It is also large and Heavy but that’s because of the amount of glass and decent build. You can see some examples here… (people photos only. Not the booth photos) Hopefully they will fix the color fringing issues on the 85 1.4 that are very severe in the 35mm and 45mm lenses.

      • Another negative is that it gets soft at 30mm.


        The tele-end softness might be a result of poor AF protocol. The 2470vc I have had the same problem after went to local Tamron office adjusting infinity focus problem. Tamron, if you’re listening, I went to your Beijing office 5times to try fix this lens, this is insanity!

  • fanboy fagz

    WOW! tamron 85 1.4! cant wait!

  • Go Tamron! Maybe the Sigma 85/1.4 will be outta my wishlist if this VC unit is to materialize…

  • Still waiting for DX primes, e.g. 24mm f/2, 16mm f/2.8, 70mm f/1.8. They should be small, light and cheap.

    • Nikon wont make this because they want to force you to buy the expensive(and more importantly overpriced for what it is) FF 24 1.8g Lens. People have been asking for YEARS for a 24 1.8 DX lens with roughly the same performance of the 35 1.8 DX lens. It has fallen on deaf ears.

      • Well, given that no one expected a D300 replacement I think there’s still some hope for DX primes. If not, third party manufacturers should take care of this. The Sigma is 18-35/1.8 is kind of a step in the right direction but is not a solution to the problem.

        • longzoom

          About Sig – why?

        • True, There are other great 24mm out here like the Sigma Art as well but the 35 1.8 DX is small, light, and affordable. You also don’t get all the FF lenses have to offer with an APS-C body as the DX lenses work better with APS-C bodies. Hopefully the D500 release will finally bring a 24mm or 20mm DX lens.

          • EnPassant

            Nikon already make 20 and 24/1.8 FX lenses.
            Wide DSLR DX lenses with high quality optics can’t magically be made much smaller as they use the same mount as the FX lenses.

            The DX 35/1.8 is actually 15g heavier than the close equivalent 50/1.8 G. And the difference between the FX 24/1.8 and 35/1.8 G lenses is just 50g. So don’t expect any miracles.

            The only way comparable wide lenses can be made much smaller is by using a mirrorless mount with much shorter flange distance.

            The market for D500 is such small compared to the DXX00 series of DX cameras that Nikon won’t make lenses just because of that camera.

    • EnPassant

      You prove hope is the last thing to die!

  • Spy Black

    Leave to Tamron and Sigma to take make high quality lenses that people can actually afford.

    • fanboy fagz

      bravo well said. in this hard economy and weak yen vs the dollar, nikon raises prices. I look to sigma and tamron for all my lens needs and 3rd party mfr for flash

  • CaMeRa QuEsT

    Hope Tamron does a budget friendly 85mm f/1.8 first, will be the perfect companion to their 35mm f/1.8.

  • Adam

    The patent covers two 87mm lenses, one 82mm lens, and two 35mm lenses.

    I cannot find in the text of this patent where the back-focus distance or image height is specified. Can someone cite this for me?

  • MonkeySpanner

    For some reason, it is just hard for me to get excited about this. Maybe because Nikon has such an excellent 85/1.8 and I know this Tammy will be more expensive. Better – probably marginally, but the Nikon is really good.

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