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Trevor R

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Trevor R last won the day on May 27 2022

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  1. Thank you for this very helpful information on the advantages and limitations of the 100S and how to get the better of it!
  2. I am getting excellent results with Mamiya 67 lenses and Pentacon Six lenses on a GFX 50S and a GFX 100, via Hartblei adapters, including tilt and shift adapters. See here: https://pentaconsix.com/digital2022.htm and here: https://pentaconsix.com/hartbleigfx.htm Other links from those pages give more information and examples of results.
  3. I have just done a quick test for you, hand-held, with the 20mm Laowa lens on a GFX 100 and the results are excellent, although I have not yet seen them on a computer monitor, although substantially zoomed on the camera back. I set the aperture at f/8, which would with most lenses been a good aperture to use for most photography, and fully shifted left along the long axis, with the camera horizontal for one shot and then fully shifted right for the next shot. I have observed very minor light loss (image darkening) at the edge opposite the direction of shift, apparently less than with the 15mm lens, and easily correctable in imaging software. One must double-check the orientation of the lens shade, which is rotatable, to avoid vignetting from it, and where possible I think that I would remove the lens shade when shooting fully shifted, just in case it slightly shaded the edge of the image area. Hope this is helpful. For landscape photography I sometimes like to shift fully left and then fully right and to stitch the resulting images on the computer, and I have done this with the 15mm Laowa lens on the Sony "full frame" camera, but not yet with the 20mm lens on the GFX. Again, where possible this is best done using a tripod, but I have also obtained some excellent results with the camera hand-held, doing my best to avoid changing the height of the image in the frame.
  4. Bear in mind that both of these lenses are shift only, not shift and tilt, although for architectural and landscape panoramic photography, a tilt facility is not normally needed. Tilt can be very helpful with close-up and macro work. Trevor
  5. Hello Acinca My experience is limited. I have the Laowa 15mm and 20mm shift lenses. On the "full frame" Sony A7Rii, the 15mm produces excellent results right into the corners, even fully shifted. On the GFX 50S there is clear fall-off of image brightness at the edges when the lens is fully shifted sideways. I have so far only used the 20mm lens unshifted, where the results of the GFX format are totally satisfactory. I would expect good results shifted, but would expect to need to do some brightness correction at the edge opposite the direction of shift when shifting horizontally (along the long axis of the image) on a GFX camera. Both lenses are beautifully made and the 20mm lens has the advantage of accepting standard filters without any sort of special mount, although these should be slimline filters, and even then I suspect that they may introduce some vignetting in the corners when fully shifted. I hope that this helps as far as it goes. Trevor
  6. Shift lenses on the Fuji GFX 50S I recently purchased the Laowa 15mm f/4.5 SHIFT lens. I chose to buy it in the Canon EF mount, with two adapters, Canon EF to Sony FE A7Rii etc and Canon EF to Fuji GFX 50S, and initial results on both cameras are excellent. At the same time, I bought the lens support, which mounts the front of the lens onto a tripod, and this works very well, enabling the photographer to move the back of the lens and the camera left, right, up, down and diagonally, in order to get a yet wider angle of view with a series of images that will stitch together well.. I also bought the 100mm Magnetic Filter Holder with one Magnetic frame and have subsequently bought various filters and further magnetic frames. Assembling the frames requires the use of a small file, as the tabs in the top and bottom of the frame are too big for the slots in the sides of the frame. Once the tabs are filed down, the frame assembles well (but would probably never come back apart without breaking). I have bought Lee 2mm thick graduated filters and these fitted into the magnetic frames well. This is not cheap, but less than half the price of the Nikon and Canon shift/tilt lenses, I believe. It does not tilt, but I only use tilt lenses for close-up and macro photography. For architecture, which is where shift lenses are at the best, tilt is not normally needed.
  7. I have obtained some superb architectural pictures with the Schneider Kreuznach PC-Super-Angulon 28mm lens fully shifted up in horizontal format on a Sony A7Rii "full-frame" camera. On the Fuji GFX50S there is substantial fall-off in light intensity in the corners and even to some extent at the sides at full aperture and on down to f/5.6. At f/8, fall-off is less obvious at the sides, though still present, with still considerable fall-off in the corners. At f/11 both of these improve slightly, but vignetting correction will be necessary in software, with excellent results possible. I have not tried shifting this lens on the GFX50S; selected Pentacon Six lenses do a better job (but there is nothing wider than 40mm, and even that is extremely hard to find).
  8. Glad to have been of assistance. The GFX 50S is a fantastic camera and some of these Pentacon Six lenses give phenomenal versatility and fantastic results. Trevor
  9. Kristian Sorry, I have just seen this. If you look at the results of my tests of "Full frame" lenses for 35mm cameras, when used on the GFX50S, you may find some possible answers. My report is in the following thread (if this link works) Trevor
  10. Since the above posting, I have taken a series of pictures of rooms in my home (we have been in lockdown!), using both the 23mm Fuji lens and the 17mm Laowa lens. Both delivered excellent results, but I really got the best shots with the Laowa lens, as the angle of view is so much wider. I will now definitely use the Laowa lens without any reservations or concerns, both for interiors and for outdoor shots (when they become possible, again!) Trevor (back in lockdown after a short relaxation by the government)
  11. As you can see from my test results, 12mm shift is possible with a wide range of Pentacon Six mount lenses on the Fuji GFX 50S via the Hartblei shift adapter. I believe that Hartblei are shortly going to offer mount adapters in which the rear component can be swapped out. With this, I hope to be able to use the same Hartblei adapter for Pentacon Six lenses, with a choice of camera mounts on the back of the adapter, so that I can use the lenses either on the Fuji GFX 50S or on a Sony A7Rii "full-frame" (35mm format) camera, thus having shift and tilt options on both of these cameras. Trevor
  12. Unfortunately, in June 2020 these videos appear to be no longer available. Can they be found somewhere else?
  13. Is there any update on this? The Fuji software for mobile phones seems very clunky, so that route does not appear to me to be viable.
  14. Thank you for the information and the links. Trevor
  15. In May 2020, I have the latest firmware update and I have noticed that this problem is still there, but as I mainly shoot landscapes it has so far not been a problem. However, for spontaneous people shots it could be disastrous! For wedding photography (just to give an example) the problem needs fixing, if one is to catch fleeting expressions. Professional models can no doubt hold an expression and still look natural, but normal people can't!
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