Sigma 18-50mm f/2 DC DN Mirrorless APS-C Lens Patent Found

A new patent for the Sigma 18-50mm f/2 DC DN APS-C lens has been found, basically a faster version of the current Sigma 18-50mm f/2.8 DC DN which will come for Fujifilm X mount in December 2022.

Asobinet, who spotted the patent, says [google translated]:

Looking at the lens configuration, it is very similar to the 18-50mm f/2.8 DC DN (not 100% match). Perhaps F2 zoom was one of the options during the examination stage of practical use lenses. However, now that F2.8 zoom has appeared, it seems unlikely that F2 zoom will see the light of day.

I love the size (and price) of the current Sigma 18-50mm f/2.8, but an f/2 version would be a nice addition too.

Summary

  • [Public number] P2022038820
  • [Name of invention] Large aperture zoom lens
  • [Dapplication date] 2020-08-27
  • [Applicant] [Identification number] 000131326
    [Name or name] Sigma Corporation
  • [Issue] We provide a small large aperture zoom lens that is suitable for digital cameras and video lenses, with good aberrations and can be used for quick focus operation.
  • [0015] This invention is based on a positive lead zoom lens for the above challenges, suitable for digital cameras and video lenses, with good aberrations, and quick focus movement, small large apertures. The purpose is to provide a lens.

Example 1

  • Focal length: 18.50-48.50
  • F value: 1.94-2.10
  • Angle of view: 77.86-31.58
  • Statue height: 14.20
  • Total length: 115.36-137.89

Sigma X Mount Lenses

via asobinet

Sigma 20mm f/1.4 and 23mm f/1.4 Mirrorless APS-C Patents Published

Sigma has patented the following two lenses for APS-C mirrorless cameras

Sigma 20mm f/1.4

  • Focal length: 20.00
  • F value: 1.46
  • Angle of view: 74.82
  • Statue height: 14.20
  • Total length: 94.00

Sigma 23mm f/1.4

  • Focal length: 23.00
  • F value: 1.46
  • Angle of view: 65.76
  • Statue height: 14.20
  • Total length: 94.00
  • Back focus:

via SonyAlphaRumors via asobinet

Sigma X Mount Lenses Coming February 21 at 7AM New York Time (1 PM Berlin Time)

So, mark this time: Sigma will announce the new Sigma X mount AF lenses February 21 at

  • 7AM New York Time
  • 1PM Berlin Time

This is the time Sigma China gave officially via the Chinese social media Weibo here.

Here is what Sigma will announce:

Sadly this lovely Sigma APS-C mirrorless lens won’t be included in the X mount launch.

We have covered the upcoming Sigma lenses several times over the past few weeks:

For the full specs comparison, you can click the links below:

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MARK THIS DATE: Sigma X Mount Lenses to be Announced on…

Sorry, guys, I am late.

But I’ve received this information right while I was cooking my wife’s favorite dish for a Valentines Day dinner (*quick instructions below).

Anyway, now we are done, my little Fuji lover is going to bed with his mom, and I have time to share it with you.

The rumor is this one: Sigma will launch its first X mount lenses on February 21.

We also confirm that the lenses to be announced will be:

We have covered the upcoming Sigma lenses several times over the past few weeks:

For the full specs comparison, you can click the links below:

Follow FujiRumors on Patreon, Facebook, Instagram, RSS-feed, Youtube, Flipboard and Twitter

40K+ Members in Record Time and Growing Faster than Ever!

Linguine/Spaghetti with shrimp and rocket salad (Rucola) and lemon and tomato

Time to prepare: 15/20 minutes – 2 people

Put the pasta… and let it cook while you prepare the sauce.

Sauce: Fry a bit of garlic and chili for a few minutes (low heat, don’t let the garlic turn brown). Then throw in some nice, fat shrimps (raise the heat). Let them fry 1 or 2 minutes with the garlic. Then put in a bit of decent white wine (about half a wine glass). Cook for 1/2 more minutes with rather hot flame. Then put in some tomato cut in smaller pieces (should be very mature tomato). Let it all cook for a few more minutes at medium heat (4/5minutes).

Drain the spaghetti/linguine and throw them in the sauce (keep a bit of cooking water in a glass, so if the sauce turns to dry, you can use the cooking water to make it more creamy). Then add the juice of half a lemon (for 200/250g of pasta), the skin of half a lemon and the rocket salad to taste (simply ripped in smaller pieces with your hands) and mix it all nicely.

Now you can serve the dish… and if you do so, feel free to send me the images via email at fujirumor@gmail.com. ;)

Mee the Film Simulation Noodles

Sigma vs Viltrox X Mount AF Lens Specs and Price Comparison

When we recently compared the upcoming Sigma X mount lenses to their Fujinon XF counterparts some people wrote me that the comparison is unfair, as the Sigma should be best compared to other third party AF lenses, mainly the Viltrox X mount counterparts.

So shall FujiRumors satisfy your desires.

Hence, once again I used the B&H Photo comparison tool to run over the specs and compare Viltrox to Sigma (I ignore the Tokina X mount trinity as those lenses are identical to the Viltrox lenses, just they cost more).

NOTE: This comparison is based on the rather reasonable assumption that Sigma will re-use the design of the current Sigma DC DN lenses and adapt its mount to Fuji X, rather than designing all new lenses with new optical design and ergonomics (hence add an aperture ring).

Sigma 16mm f/1.4 DC DN vs Viltrox 13mm f/1.4

  • the Sigma is 4,2% more affordable than the Viltrox lens
  • the Sigma is 3,5% lighter than the Viltrox
  • the Viltrox has better close focus distance capability (22cm vs 25cm)
  • the BHphoto Comparison Tool has not yet added the specs for the Viltrox 13mm f/1.4

At that wide range the difference between 16 and 13 is quite substantial, hence this could be called an unfair comparison.

Sigma 30mm f/1.4 DC DN vs Viltrox 33mm f/1.4

  • the Viltrox is 17,6% more affordable than the Sigma lens
  • the Sigma is just 1,8% lighter than the Viltrox
  • the Sigma has better close focus distance capability (30cm vs 40cm)
  • full specs comparison here (filter size, optical design etc)

Sigma 56mm f/1.4 DC DN vs Viltrox 56mm f/1.4

  • the Viltrox is 39% more affordable than the Sigma lens
  • the Sigma is 3,4% lighter than the Viltrox
  • the Sigma has better close focus distance capability (50cm vs 60cm)
  • full specs comparison here (filter size, optical design etc)

Gear Mentioned