luiz fonseca

Hello, does anyone know why the lens of the samsung nx300m keeps making these oscillations in the footage (back and forth) .Whenever I put it in "autofocus" mode, it seems like she tries to focus on the object, but she can't, so she keeps going back and forth several times. You can see these oscillations in the video below (seconds 0: 08,0: 29 and 0:52) https://www.youtube.com/watch?v=4LCSCxi0ZXs&feature=youtu.be The camera is excellent, but this defect in the focus is terrible and spoils the footage. Does anyone know if it is possible to solve this problem? I've tried several types of settings and I can't solve this problem. I used 18mm, then zoomed in 24mm, 45mm and lastly 55mm. I changed autofocus from automatic to continuous and etc. I changed the ISO, increased the lighting, the aperture mode, the zoom, but nothing worked. Is this a feature of the 18-55mm lens? If so, do you recommend any other lens that is compatible with the nx300 that does not have this same problem? Thank you! Camera specifications: Nx300m Lens: 18-55m Continuous automatic focus Iso: 1600 1/30 Video shot in a 2mx2m room with four 25w lamps on the ceiling.

Hello, does anyone know why the lens of the samsung nx300m keeps making these oscillations in the footage (back and forth) .Whenever I put it in "autofocus" mode, it seems like she tries to focus on the object, but she can't, so she keeps going back and forth several times. You can see these oscillations in the video below (seconds 0: 08,0: 29 and 0:52) https://www.youtube.com/watch?v=4LCSCxi0ZXs&feature=youtu.be The camera is excellent, but this defect in the focus is terrible and spoils the footage. Does anyone know if it is possible to solve this problem? I've tried several types of settings and I can't solve this problem. I used 18mm, then zoomed in 24mm, 45mm and lastly 55mm. I changed autofocus from automatic to continuous and etc. I changed the ISO, increased the lighting, the aperture mode, the zoom, but nothing worked. Is this a feature of the 18-55mm lens? If so, do you recommend any other lens that is compatible with the nx300 that does not have this same problem? Thank you! Camera specifications: Nx300m Lens: 18-55m Continuous automatic focus Iso: 1600 1/30 Video shot in a 2mx2m room with four 25w lamps on the ceiling.

Hello, I bought a Sony A5100 and to record videos of electronic unboxings for youtube (something like that https://youtu.be/KovcK8YS9BA), but the lens that comes with it, a 16-50 Model P1650, besides being very angular, leaves the video full of vignettes (dark corners). Which (cheap) lens model would you recommend? it would have to be straight and with a fast focus. I've been observing some models like: Sigma 19mm F / 2.8 Sigma 24mm F2.8 Sigma 30mm 2.8 E-mount Which model would you recommend for this case? I accept suggestions from other lenses too

Hello everyone! Two weeks ago I bought a Sony a5100 with 16-50 lenses (Model SELP1650), but when I started filming I noticed shadows around the image. I researched forums about the problem, and saw that it could be an effect called 'vignette'. I shoot with the setting 1/80 F5.6 and ISO around 400 to 600 (with 3 lamps of 60w in a room of 3 meters by 3 meters) and I was recommended to set the camera to 1/60 F11 and a higher ISO (around 2000) I put this setting, but with the ISO increased, the image is very saturated. Is there any other solution to remove these shadows? The camera is very good, and the focus is fast, but this problem with "shadows" (or "vignettes") is putting an end to my filming. The image below is part of a shot on a white wall Configurations: 1/80 F5.6 and ISO around 400 to 600 (with 3 60w lamps in a 3 meter by 3 meter room)