Huawei Mate 50 Pro
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Huawei Mate 50 Pro

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  • AnonD-1026644
  • 7Xd
  • 01 Oct 2022

Anonymous, 01 Oct 2022I won't be making further comments on this topic as an... moreI think both of you are referring to different calculations.
A zoom lens basically zooms in or out. It means there is a starting focal length and the maximum focal length. Divided the max focal length to the shorter one and you get the zoom factor. BUT this only refers and applies to ONE lens; not two or more lenses.

On a smartphone, as someone mentioned, the focal length of the telephoto camera is divided to the focal length of the main to get the optical zoom factor. Is it the standard way of doing it? For decades of photography, I think someone just made that up.

It's like having a 7mm fisheye lens on your bag and on the other hand, you also get a 600mm telephoto with a 2x teleconverter. Does it mean you have 1200/12 = 100x zoom?

Ridic.ulous.

    Bionic Chip, 01 Oct 2022I contacted Huawei and confirmed that the 3.5x zoom factor ... moreYou can't trust spec sheets. Manufacturers can always find a way to exaggerate the numbers in order to sell more. This device for example comes with the so-called "Kunlun Glass," but it turns out that only the orange variant has it.

    I just like to add the footnotes from Mate 50 Pro's product page:
    "1. Only the Orange version features Kunlun Glass."
    "2. ...device is protected against harmful ingress of static water at up to 2 metres for the Silver and Black versions, and up to 6 metres for the Orange version, for up to 30 minutes."

    The downsides or negative aspects of the product are hidden in the footnotes; the "amazing" features are emphasized or exaggerated heavily in order to hijack your critical thinking. Just like the false 3.5x zoom of the Mate 50 Pro's telephoto.

      AnonD-1026644, 01 Oct 2022We really need to know what the 90 mm focal length refers t... moreI contacted Huawei and confirmed that the 3.5x zoom factor refers to the wide end of a SEPARATE lens of the main camera module AND the maximum focal length of the SEPARATE telephoto lens. 🤣

      Isn't it a marketing tactic to increase the advertised optical zoom? It's all trickery and marketing.

      Therefore, in a triple-camera setup starting from ultrawide to telephoto, you just have to use a wide lens with the lowest focal length and add a separate telephoto module with a high focal length. Divide the focal length of the telephoto to the wide and there you have a seemingly "large" optical zoom.

      Ex. Wide: 12mm, Tele: 200mm
      Optical zoom for advertising: ~16x (200/12) 🤣

      Looking at the Huawei's Mate 50 Pro's product page, the footnotes confirmed it all. It's more like a sc.am than actual specs.

      None of these are "zoom" lenses. They are all, indeed, fixed or prime lenses.

      Buying a camera lens for your DSLR or mirrorless body is a different story. You would ask for the zoom factor and zoom range. The lens specs are engraved on the lens. That itself, is the proper way of presenting the correct zoom range and focal lengths in all honesty.

        Anonymous, 01 Oct 2022I won't be making further comments on this topic as an... moreI get it. I found it on DXOMARK's testing. Under Zoom tests, all focal lengths are converted to their approximate FF (35mm) equivalent. Reading the iPhone 14 Pro's review, the zoom range is 77-200+mm, which confirms the 3x optical zoom and the zoom range.

        I compared the specs from GSMArena, multiplied it with the published zoom factor, and it's consistent with DXOMARK.

        The published focal length (35mm equivalent) of the telephoto specs here refers to the shortest focal length of that lens. You get the maximum focal length by multiplying that number with the published zoom factor. Hence, we get an approximate 315mm at the longest focal length.

        Taking "that" into account, we get 90-300+mm zoom range for the periscope telephoto lens.
        Huawei Mate 50 can, in fact, zoom in 3.5x from 90mm with its telephoto lens only.

        Reference:
        dxomark. com apple-iphone-14-pro-camera-test-results

          Customer Support, 01 Oct 2022"And again, the periscope telephoto is a zoom lens. Th... moreYes, of course. But please research on this 90mm focal length.
          Is it the actual focal length, or the full frame equivalent, or is it even the shortest or longest focal length? I wonder why Huawei didn't provide specific detail on this telephoto feature.

            Bionic Chip, 01 Oct 2022"I demand you to show evidence form Huawei or any offi... more"And again, the periscope telephoto is a zoom lens. That's why we have a zoom factor of 3.5x. Otherwise, it's just a PRIME lens."

            If you see a lens with a zoom factor, it's a "zoom lens." These are photography basics and can be applied to any lens, big or small.

            Zoom lenses are called as such because their focal lengths "zooms" optically. It means the focal lengths can extend from the widest to longest based on its design.

            Mate 50 Pro can achieve a 3.5x zoom because it has a periscope telephoto zoom lens. That's it.

              Anonymous, 01 Oct 2022I won't be making further comments on this topic as an... moreI own the lenses I used in my examples. Don't try to bully you but I know what I am talking about zoom factors, otherwise I won't buy these lenses if in the first place, I can't determine how long the zooms are going to be.

              Either it's a camera lens or phone lens, the zoom factors are the same. You simply convert the focal lengths based on crop factor.

              But you know what, I find it interesting to know the MAXIMUM focal length that the Mate 50 Pro can achieve. I might even contact Huawei support to figure this out as I am curious about this periscope technology and how the lenses work.

              Not to mention the variable aperture.

              Anyway, if this phone becomes available in my country, I'll buy it.
              But based on experience, a 90mm is not enough to zoom in enough to take moon shots.

              "If you are shooting the moon alone, you can get pretty good results with a 200mm or 300mm lens" — BHPhotoVideo

              Therefore, my 315mm estimate (90mm * 3.5x) as max focal length makes sense here.
              I'll contact Huawei to make sure.

                • ?
                • Anonymous
                • pLi
                • 01 Oct 2022

                Anonymous, 01 Oct 2022Exactly, and in smartphone, the longest focal length is the... moreI won't be making further comments on this topic as anyone who reads and understands will know who's right.

                  • ?
                  • Anonymous
                  • pLi
                  • 01 Oct 2022

                  Bionic Chip, 01 Oct 2022Who said to multiply the longest focal to the zoom factor? ... moreExactly, and in smartphone, the longest focal length is the telephoto camera's focal length. Which is 90mm for mate50pro.
                  My friend, SELP1650 isn't a smartphone camera lens, it's a zoom lens with variable focal length. Mate50pro's camera DOESN'T have this feature (only few Sony phones do on a very limited level).
                  So here, we can only take main camera as the base and telephoto's 90mm focal length as the limit. The 315mm lens simply doesn't exist in mate50pro. In fact, s22u's 10x telephoto has 230mm focal length, so it would be a record breaking 315/24=~13x optical zoom, and I wouldn't be asking it's only 3.5x, lol. Hope it's clesr

                    Anonymous, 01 Oct 20223.5x isn't significant at all with periscope setup. Y... moreYou don't get it.

                    Even a 10x zoom factor is nothing when the focal length starts at a small number.

                    Take this lens from SONY:
                    SEL1650

                    That is a ZOOM lens with zoom factor of 3.1x. Since the max focal length is just 50mm, it can be beaten by a lens with 2x zoom but with max focal length of anything above 50mm.

                      Anonymous, 01 Oct 2022And may I also ask where did you get this idea of multiplyi... more"I demand you to show evidence form Huawei or any official source about 315mm focal length. Your claim hence your responsibility of showing evidence."

                      Here we go again. I'm researching for you for free, to answer your questions. And again, you should contact Huawei since they keep patents and designs for their camera systems.

                      And again, the periscope telephoto is a zoom lens. That's why we have a zoom factor of 3.5x. Otherwise, it's just a PRIME lens.

                      ZOOM lens and PRIME lenses are different. You don't want to divide the max or minimum focal lengths of lenses of two different camera modules and get the zoom factor.

                      I'm out of here since it's clear that you don't know how zoom lenses work. I happen to have three zoom lenses. The principles are the same: they zoom in and out. They have the shortest and longest focal lengths.

                      Longest focal length/shortest focal length equals the zoom factor:

                      Reference:
                      "To determine the overall zoom ratio of the lens, simply divide the longest focal length by the shortest."—Sigma Photo, a lens manufacturer

                        • ?
                        • Anonymous
                        • pLi
                        • 01 Oct 2022

                        Bionic Chip, 01 Oct 2022It doesn't matter if it's the full frame equivale... more3.5x isn't significant at all with periscope setup. Yes I know quite well that crop factor. The point I was making is that some may mistake the equivalent focal length for original one, but in fact actual focal lengths in phones are much smaller due to small sensors. Which means it's not as much of a struggle to fit in a longer focal length for more zoom. That's why 5x periscope is common, even 10x is achieved on s22u, which even has another telephoto lens.

                          Anonymous, 01 Oct 2022And may I also ask where did you get this idea of multiplyi... moreWho said to multiply the longest focal to the zoom factor? That's illogical. You are dividing the focal length of the separate telephoto to the main camera's focal length. That's incorrect.

                          "Zoom lenses are often described by the ratio of their longest to shortest focal lengths. For example, a zoom lens with focal lengths ranging from 100 mm to 400 mm may be described as a 4:1 or "4×" zoom." —Wikipedia

                          To be clear, it is as simple as shortest focal length of a ZOOM lens multiplied by zoom factor.

                          Example zoom lens: Sony SELP1650
                          16mm to 50mm
                          zoom factor is longest focal length divided by shortest, that is 16/50
                          zoom factor is: 3.12x

                          Example zoom lens: Sony SEL55210
                          55mm to 210mm
                          zoom factor is longest focal length divided by shortest, that is 210/55
                          zoom factor is: 3.8x

                          And here the reference from my previous posts:
                          "For example, a 50-100mm zoom lens would be 2x zoom, and a 50-150mm zoom would be a 3x zoom."
                          —SLR Lounge

                            • ?
                            • Anonymous
                            • pLi
                            • 01 Oct 2022

                            Bionic Chip, 01 Oct 2022"104/25=4.33 (rounded down to 4) times optical zoom on... moreAnd may I also ask where did you get this idea of multiplying the longest focal length with the zoom factor from? It's nowhere to be found except form you!

                            Yes, you're right (for first time), it's 7x zoom BUT only when compared to ultrawide sensor, which is a pointless measure. Remember, zoom is only a ratio. We care about the ration bw main and telephoto, not UW and telephoto.

                            "we can assume that Mate 50 Pro's periscope setup is a 90-315mm zoom lens, that's why we get 3.5x magnification."
                            So according to your claim, Mate 40 pro's telephoto camera can increase it's focal length to 315mm? That's simply untrue. It would be big news and many articles would be written if it was true. Only phones with variable focal length are from Sony.
                            I demand you to show evidence form Huawei or any official source about 315mm focal length. Your claim hence your responsibility of showing evidence.

                              • ?
                              • Anonymous
                              • pLi
                              • 01 Oct 2022

                              Bionic Chip, 30 Sep 2022Very funny 🤣 The periscope has a starting focal length o... moreSorry, you're wrong again. I've posted clear evidences and calculations already. And your calculations are plain wrong unless you put another 3.5x zoom lens from somewhere on top of that telephoto lens, maybe a clip on lens from eBay or amazon or aliexpress. My calculations are constant with official specifications and "315mm" is nowhere to be found on this phone's specs.

                                • D
                                • AnonD-1026644
                                • 7Xd
                                • 01 Oct 2022

                                Bionic Chip, 01 Oct 2022It doesn't matter if it's the full frame equivale... moreWe really need to know what the 90 mm focal length refers to. Is it the shortest focal length?
                                By the looks of it and the periscope telephoto's capability, it seems that the 90 mm equivalent refers to the shortest focal length. Therefore, if Huawei claims it to be a 3.5x zoom, then that's 315 mm for the longest focal length.

                                Writing a proper zoom lens specs should consist of the aperture/short and long range. Ex.:
                                f/3.5-5.6/28-70

                                This means that at 28mm, the aperture is f3.5 and at the maximum focal length, f5.6.
                                That's how you want to avoid confusion and senseless discussions.

                                  Anonymous, 30 Sep 2022By the way, these ones on gsmarena are 35mm equivalent foca... moreIt doesn't matter if it's the full frame equivalent; the zoom factor is still the same. If you look at EXIF, for example, we see 18 mm, multiply it to the crop factor for conversion.

                                  For example, the EXIF shows the shortest focal length of the phone's telephoto lens is 18 mm, zoom factor is 3.5x.

                                  That is,
                                  18 mm to 63 mm and still translates to 3.5x zoom.
                                  Multiply these values to the crop factor, let's say 5.
                                  That still translates to 90 mm to 315 mm. Zoom factor is still the same—3.5x.

                                  (These examples are theoretical.)

                                  But since your original concern is as to why Huawei even have to implement a periscope setup just to achieve a "3.5x" magnification which turned out to be a significant number in conjunction with the lens' focal length, then I can't answer that.

                                  Just reach out to Huawei's customer support and question the existence of a periscope telephoto setup on Mate 50 Pro.

                                    Anonymous, 30 Sep 2022Except that your working out is wrong. Again, that's n... more"104/25=4.33 (rounded down to 4) times optical zoom on pixel 6 pro."
                                    "So mate 50 pro's main camera has focal length of 24mm and telephoto is 90mm. So 90/24=3.75 (GSMarena should fix it, it's not 3.5x it's 3.75x).
                                    And for iPhone 14 pro max it's 77/24=3.21 (i think they just round it down to nearest 0.0 or 0.5)
                                    For s22 ultra, 70/23=3.04 and 230/23=10 times optical zoom."

                                    Where are you getting these idea of dividing the telephoto's focal lengths to the main cam's focal length? These are separate modules; separate lenses.

                                    If that's the case, it's also correct to divide the longest focal length (telephoto) to the shortest (ultrawide)?
                                    So for Huawei Mate 50 Pro,
                                    that would be 90mm/13mm = 7x zoom.

                                    "Zoom lenses are often described by the ratio of their longest to shortest focal lengths. For example, a zoom lens with focal lengths ranging from 100 mm to 400 mm may be described as a 4:1 or "4×" zoom." —Wikipedia

                                    In Huawei Mate 50 Pro's case, I simply assume that the shortest focal length of the telephoto setup is 90mm, then multiply it by 3.5, so we get the longest focal length of 315mm.

                                    Therefore, based on the specs published on this website, we can assume that Mate 50 Pro's periscope setup is a 90-315mm zoom lens, that's why we get 3.5x magnification.

                                    That way, it makes sense.

                                      Anonymous, 30 Sep 2022Except that your working out is wrong. Again, that's n... more"For example, a 50-100mm zoom lens would be 2x zoom, and a 50-150mm zoom would be a 3x zoom."
                                      —SLR Lounge

                                      Please don't mislead us. Read tons of articles and simplify the explanation.

                                      🤷‍♂️

                                        Anonymous, 30 Sep 2022Sorry you're doing it wrong. That's not the way t... moreThis conversation is pointless. Just reach out to Huawei's customer support and question the existence of a periscope telephoto setup on Mate 50 Pro.

                                        The periscope setup has to be there since the sensor size for that module doesn't allow for it to be placed in the phone in conventional way.

                                        The engineers know what they're doing here, unfortunately.

                                        Periscope is simply a bunch of mirrors that reflect light. That's it. Nothing fancy.