Stab Posted July 10, 2018 Share Posted July 10, 2018 I am shooting weddings with the GH5-s and I have been using the Sigma 18-35 f1.8 since the day it was released. The lens is amazing, but I am yarning for a little more reach on the tele-end. Simply speaking, i am starting to find it too wide for my likings. Now, swapping lenses on a wedding is a biatch and I would really like to have a zoom lens that is as wide as the sigma, but also longer. I could live with a small decrease in performance (the Sigma is pretty damn good) and of course I could sacrifice the f1.8 but I don't want to go much lower. Is there any lens that you have used that fits the bill? Well there is the Fujinon 18-80 f2 but it is a bit on heavy and pricey side ? Anything else? How about the Sigma 17-70 f2.8-f4? Or Nikon 16-80 f2.8-f4? Any experience with that? If anyone knows about a good lens that I might not know off, please share By the way, I use a Nikon to MFT Speedbooster and all manual settings, so Autofocus or IS is not what I am after. Thanks! Quote Link to comment Share on other sites More sharing options...
Rinad Amir Posted July 10, 2018 Share Posted July 10, 2018 Try 50-100 1.8 Art its must have with 18-35 ? webrunner5 1 Quote Link to comment Share on other sites More sharing options...
Super Members BTM_Pix Posted July 10, 2018 Super Members Share Posted July 10, 2018 The Nikon 16-80 is one of their newer E type electronic aperture control lenses so you won't be able to control the aperture with the speedbooster or any other adapter that uses mechanical linkage to operate the diaphragm blades. Its OK if you want to shoot wide open I suppose but unfortunately with it not being a constant aperture its even more problematic. Quote Link to comment Share on other sites More sharing options...
Stab Posted July 10, 2018 Author Share Posted July 10, 2018 57 minutes ago, BTM_Pix said: The Nikon 16-80 is one of their newer E type electronic aperture control lenses so you won't be able to control the aperture with the speedbooster or any other adapter that uses mechanical linkage to operate the diaphragm blades. Its OK if you want to shoot wide open I suppose but unfortunately with it not being a constant aperture its even more problematic. Oh right, thanks for that info. That is a dealbreaker unfortunately. Quote Link to comment Share on other sites More sharing options...
Super Members BTM_Pix Posted July 10, 2018 Super Members Share Posted July 10, 2018 If you want to be similar on the wide end to the Sigma but with some more reach (though not as much as a 70mm) then Nikon 17-55mm f2.8 might be worth a look for you. It is constant aperture so you won't be losing as much on the longer end as the other options and it is a very fine lens indeed. Used examples are generally around £400 so it won't break the bank either. Geoff CB 1 Quote Link to comment Share on other sites More sharing options...
Stab Posted July 10, 2018 Author Share Posted July 10, 2018 Yea thanks BTM_Pix, just saw that one. I read someone saying that it probably won't work with the Speedbooster (XL), as it just barely covers the DX sensor (1.5x crop). If anyone can tell me how that lens worked for them with a Speed Booster that would be awesome. Quote Link to comment Share on other sites More sharing options...
Super Members BTM_Pix Posted July 10, 2018 Super Members Share Posted July 10, 2018 This is it on a full frame camera (D700) You could probably simulate it with a crop in photoshop with the right dimensions of the XL to check. Quote Link to comment Share on other sites More sharing options...
Super Members BTM_Pix Posted July 10, 2018 Super Members Share Posted July 10, 2018 I think my sums are right so this is what it would look like on an XL, so, yes, it would run out of road in the corners. Verus a 0.7 Speedbooster which would be OK. Which, admittedly, isn't much of a help if you've got the XL Stab 1 Quote Link to comment Share on other sites More sharing options...
Shirozina Posted July 10, 2018 Share Posted July 10, 2018 There is a Canon EF-S 17-55 2.8 (but you will need another speedbooster but the Viltrox EF-M2 is pretty good and a lot cheaper than the Metabones) Quote Link to comment Share on other sites More sharing options...
Super Members BTM_Pix Posted July 10, 2018 Super Members Share Posted July 10, 2018 For completeness, the same sums cropping an image of the Sigma 18-35mm on an XL There is still a small amount of vignette but reduced from the Nikon Quote Link to comment Share on other sites More sharing options...
webrunner5 Posted July 10, 2018 Share Posted July 10, 2018 Doesn't the GH5s have a digital zoom feature like Clear Zoom on the Sony cameras? Why not use that if it works well enough at the times you need more reach? Quote Link to comment Share on other sites More sharing options...
cantsin Posted July 10, 2018 Share Posted July 10, 2018 Alternatively, you could use a B4 mount broadcast zoom lens and adapt it to your camera. They usually only cover 2/3", but many come with a 2x extender that will make it cover MFT. Most of these lenses have a f1.7 constant aperture which drops to f3.4 with the extender activated. Upsides: You'll have a parfocal zoom, often with enormous zoom ranges such as 8-120mm (16-240mm with 2x extender), and you can easily find them second-hand for not more than $200. (Calculate another $150 for a good adapter, for example from https://c7adapters.com.) Downsides: Most of these lenses are specificied for SD and will not render fine detail. (Just shot something with a Fujinon 8-120mm B4 lens on the BM Pocket and will share the footage when the edit will be done._ Quote Link to comment Share on other sites More sharing options...
newfoundmass Posted July 10, 2018 Share Posted July 10, 2018 Have you tried activating Extra Tele Conversion on the GH5? It adds reach without quality loss. You can create a custom button to turn it on and off, I believe, and it'll give you a bit of extra reach. Quote Link to comment Share on other sites More sharing options...
Super Members BTM_Pix Posted July 10, 2018 Super Members Share Posted July 10, 2018 1 hour ago, cantsin said: Alternatively, you could use a B4 mount broadcast zoom lens and adapt it to your camera. They usually only cover 2/3", but many come with a 2x extender that will make it cover MFT. Most of these lenses have a f1.7 constant aperture which drops to f3.4 with the extender activated. Upsides: You'll have a parfocal zoom, often with enormous zoom ranges such as 8-120mm (16-240mm with 2x extender), and you can easily find them second-hand for not more than $200. (Calculate another $150 for a good adapter, for example from https://c7adapters.com.) Downsides: Most of these lenses are specificied for SD and will not render fine detail. (Just shot something with a Fujinon 8-120mm B4 lens on the BM Pocket and will share the footage when the edit will be done._ And not much more for the adapter cable and NP battery mount to make the zoom powered. I think all of us who've put a B4 lens on an MFT camera have to tip the hat and acknowledge that we never went for it to quite the same extent as this guy https://youtu.be/E-baLc-POBM Amazeballs 1 Quote Link to comment Share on other sites More sharing options...
Stab Posted July 10, 2018 Author Share Posted July 10, 2018 2 hours ago, BTM_Pix said: I think my sums are right so this is what it would look like on an XL, so, yes, it would run out of road in the corners. Verus a 0.7 Speedbooster which would be OK. Which, admittedly, isn't much of a help if you've got the XL Thanks mister! Very helpful. Which crop factor of the GH5-S did u use to begin with? I think the GH5-S has a slightly bigger sensor than the GH5 in 16:9 mode. Quote Link to comment Share on other sites More sharing options...
Super Members BTM_Pix Posted July 10, 2018 Super Members Share Posted July 10, 2018 I used 2x because I never read the initial post carefully enough and thought it was the regular GH5 ? I think it's 1.85 on the GH5S ? Those are all 3:2 aspect ratio as they're from stills cameras so take that crop into account as well. I'm not near a computer to do it but if you use those original source files from each post you can do it from scratch to confirm. I suppose the story is that it will give you less margin than the 18-35 and if that is already vignetting any on your XL then you'll have a problem. Quote Link to comment Share on other sites More sharing options...
webrunner5 Posted July 10, 2018 Share Posted July 10, 2018 Here is the first time I ever tried one, a Fujinon 19X f 1.7 with the 2x extender on my Panasonic AF100A. Picture of rig above. Had a 50 dollar B4 to m4/3 adapter on it. They can be incredible sharpness wise. I paid 150 bucks for it because the zoom motor was burned out from Adorama. Pretty common on them. There is a switch where you can disable the power zoom so works by hand easy. If you can find one like the picture below that says AT2 that is a newer version of the lens. It is HD. I had no problem even in 4K on my G7 with that lens. This is Fuji description of AT2 lens. So as you can see they are pretty damn good even for HD and better. "AT2 Aspheric Technology Many of Fujinon's HDTV and broadcast lenses feature Fujinon's AT2, which combines the company's exclusive Aspheric Technology with a new inner focusing system to greatly improve lens performance over conventional designs." I can also say the Panasonic AF100 is a hell of a great camera for as low as 600 dollars. Amazing output using a native m4/3 mount, decent AFS AF also. Tons of knobs, buttons. A true Cine Camera for peanuts. Great learning tool. newfoundmass 1 Quote Link to comment Share on other sites More sharing options...
newfoundmass Posted July 10, 2018 Share Posted July 10, 2018 The really nice thing about the AF100 is that it outputs 10 bit 4:2:2 via HDMI. Hook it up to one of the HD Atomos recorders that you can get for little money used these days and you can get great quality footage that you can work with in post. Quote Link to comment Share on other sites More sharing options...
webrunner5 Posted July 10, 2018 Share Posted July 10, 2018 29 minutes ago, newfoundmass said: The really nice thing about the AF100 is that it outputs 10 bit 4:2:2 via HDMI. Hook it up to one of the HD Atomos recorders that you can get for little money used these days and you can get great quality footage that you can work with in post. Out of likes. Yeah it is one heck of a camera for the money. Quote Link to comment Share on other sites More sharing options...
webrunner5 Posted July 11, 2018 Share Posted July 11, 2018 Too add though to the AF100. I think you have to have the AF100A model to get the 10 bit 4:2:2. That is the one I had. Quote from Personal View.. "The original AF100 had 10-bit 4:2:2 SDI/HDMI outputs as well. The downside, however, was that the bottom two bits were blanked out, restricting the AF100 to 8-bit resolution. According to Jan's explanation, Panasonic has added dithering to those two blanked-out bits. This superimposes an interpolated 2-bit gradient on the camera's 8-bit output, which can make transitions between color bands look smoother. This may produce comparable results as 10-bit transcoders such as 5DtoRGB, which use similar digital signal processing techniques to enhance the conversion of 8-bit data into a 10-bit transcoded format. The good news is that the original AF100 is far from obsolete. The sad news is that the AF100A will not have the true 10-bit output we were hoping for." Quote Link to comment Share on other sites More sharing options...
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