lenny87

Hello there, I am filming in a green screen studio, i film with 25fps. Now most people advise me to shoot either with a shutter speed of 50 or 100, when you shoot with 25fps. So this is what i do, but i do not really understand why? My camera also has a 60 and 80 shutter option. Maybe there is somebody who can explain to me why i shouldn't use the 60 or 80 shutter possibility on my camera? Or maybe i could use it? Cause it would be very handy if i could use the 60 or 80 shutter. I film with a: -Panasonic Lumix G7 with an Atomos Ninja Flame recorder (prores HQ 422 8 bit) -Samyang 12mm fix lens MFT -I mostly use F-stop 2.4 or F-stop 2.8 (with both settings the whole Frame, where my subject is standing is in focus, from top to bottom and from left to right) I hope somebody can explain me a bit more about the shutter times :-) Thanx in front greetz Lenny

Thanx for replying, The green screen room is my own DIY room. I know it is not perfect, but i am not allowed to get the ceiling out, and therefore i have to do it with this. The local professional has a huge Studio with a professional plastered green screen painted with color bar green. My green screen is one, bought at a professional shop (its trevira cs material) used by lots of film studios. The screen and the character are both lit separately and i also have a backlight. I have ordered an X-rite color checker Video card and i guess that will bring back more green in my green screen :-) after using it. Anyway you would advice me to use a normal WB, set with a white balance card? Greetz Lenny

Hello there, I am looking for a second opinion: A local guy, who has his own professional green screen studio, advised me to adjust my Kelvin (WB) in the camera, so that the green from my green screen matches the color bar green. In other words it matches the green in the green spot on the vector scope. He said that it makes the keying much more reliable. After the keying the character has to be color corrected back to its original state. The following pictures show: -1x - the kelvin (WB) matched in the camera, so that the green hits the vector scope green -1x - the Kelvin (WB) set in the camera with the use of a white balance card (so a proper WB setting) My question is: -is this a good idea or not? cause at the moment i can;t see the advantage of it, cause i tried keying both and i can't find an advantage keying the footage with the Kelvin (WB) set, so that the green hits the green spot in the vector scope. I hope somebody can explain me why to do it? Or why not to do it? Thanx in front Greetz Lenny

Hello There, I was wondering if anybody has experience with: getting wrinkles out of polyester green screen (Trevira cs Fabric) I have tried watering them and steaming them with a hand steamer, it works for some wrinkles, but not for all. The wrinkles that do disappear, leave some strange wavy/bubely sort of wrinkles at the side of the places where the wrinkles used to be. Hope somebody can help Greetz Lenny

Thanx, What does OBS means?

Hello There, i was wondering if there is somebody who has experience with both muslin and polyester green screen materials? -Is there any disadvantage of using Polyester green screen? -Is there any disadvantage of using cotton/muslin green screen material? I am thinking of buying Trevira cs: https://www.gerriets.com/en/television-cs-chromakey-fabrics Thanx in front greetz lenny

Thanx for the great tips. Unfortunately i am not able to go for long focal lengths, due to the size of my room. It's only 50m2 Thanx, that's a valuable lesson to me :-) How do you mean this exactly? Some people advice me to film flat and do the shadows and highlight in post. And others advice me to do the lighting in the film room. I am quite confused about this and i don't know which would be best? Thanx in front greetz Lenny

Thanx for the tip. I will go and make some test with my MFT 12mm lens and see if the face gets long as soon as i crop. which Focal length would you recommend me?

Thanx, Good to hear :-) What focal length did you use? Or which would you recommend? Thanx in front

yes the atomos ninja flame He Phil, You are right about the light. I have been playing around in my DIY green screen room and i have placed my lights closer to the subject. And that brings alot. But i do think that a lens with for example F2.8 will also help, as long as i calculate exactly where my depth of field is. A professional photographer taught me today how to do it :-) Today i bought a Samyang 12mm MFT lens with F2.0- F22 it's a manual focus and manual aperture lens, therefore not to expensive :-) So i don't need any Speedbooster/focal reducer. I do think that i shouldn't go smaller then F2.8 , due to the depth of field. Thanx

Thanx Phil, my background is a CGI Cartoon world :-) The vertical filming will allow me more zoom possibility with the 3Dcamera in my software (Fusion 9) He Nikkor, i always film on a tripod which is not moving at all. Will Rolling shutter affect my shots then? Thanx Ethan, Yes i am shooting a stationary person and i will place the keyed footage on a 3D cartoon scene (like in the picture above) You are so right,........ hahahahaha most people didn't read my post. But luckily there are quite a few people (like you) that did :-) i am very happy with those reactions, cause it gives me the confidence that i won't run into any technical issues. Thanx.

i am aware :-) that's why it is hard to find one :-)

yeah you are right i am filming on a tripod :-) So i guess i could turn of the Image stabilization?

Well at least i can zoom in more in post as i am filming always in a green screen room. So as far as you know there a re no technical disadvantages? thanx

maximum 1000€

But what is the disadvantage? Why not do it?

Hello there, I always film in a greenscreen room. And i always film one person who is standing on the same spot. therefore many people have recommended me to film portrait style. Now i would like to know if there are any technical disadvantages about this? Thanx in front greetz Lenny

Thanx for your great help Jonpais. I can't go lower then F2.8, cause of filming in a green screen room. Do you have any recommendations for a fast full frame zoom lens with F2.8 and manual aperture? It doesn't matter if it s nikon, canon or something else. I haven't biought the speedbooster yet :-) I am looking for something similar like the native 12-60 leica lens. thanx in front

is a full frame lens always a fast lens? Or are there also slower full frame lenses? Cause as i said before i am always filming on a tripod, so i guess i don't really need the IBIS. Or does the IBIS also has influences on the noise? I am thinking of keeping the G7 , buying a speedbooster (Mitakon zhongyi lens turbo II) cause i don't need auto focus. And then pair it up with a nikon full frame lens f2.8 I always film in a green screen room, so i can't go to low with my F stop :-) Thanx in front

He Jonpais, thanx for your quick reply. I was hoping i could ask you some more? -Does IBIS create less noise? Cause i always film on a tripod in a DIY green screen filmroom. see picture: so my only concern is to get rid of this noise. -does the G85 creates less noise then the G7? -and when i have a 2.8 full frame lens from nikon + an external recorder to capture prores 422, will the G7 be a low light monster? thanx in front greetz Lenny

Hello there, In the atomos + ninja assasin thread with andy lee: Andy lee said: My questions is: Will the G7 only be a serious film making tool: -Paired with a Metabones Speedbooster XL and Nikon 2.8 Zooms lenses (full frame lenses)? -Or will it also be a serious film making tool when i put a native lens on it with F2.8 (for example the: Panasonic H ES12060E 12 – 60 mm Leica DG Vario Elmarit Standard Zoom Lens) In other words: -Do i necessarily need to have a Metabones Speedbooster XL with a full frame lens to get a result with less noise? Or would i also get the same result if i buy a panasonic F2.8 lens? Thanx in front greetz Lenny

I have done some testing: comparing the internal mp4 footage with the external atomos Prores 422 footage I got screenshots from the comparence from the Blue channel and from the color channel: Cold camera is: when i made the shot with the camera 1 second after i had put all the lights on. Warm camera is: when the camera was on for an hour, warmed up, cause of the influence from one of my lights, which was very close to the camera. MP4Internal / Prores 422 Atomos In the left you see the cold camera MP4 Internal. In the right you see the warm camera Prores 422 recorded with the Atomos. ------------------------------------------------------------------------------------------------------------------------- Prores 422 Atomos / MP4Internal In the left you see the cold camera Prores 422 recorded with the Atomos. In the right the cold camera MP4 internal. I forgot to put the main lights out in my DIY green screen room, when i filmed the cold-camera shot with the prores 422. Which is not so bad after all, cause you can see, that although it has more light coming in then the internal mp4 shot. The prores 422 still has loads more noise. ---------------------------------------------------------------------------------------------------------------------------- left-cold-prores-right-warm-prores-400%-blue-channel.jpg Cold-camera-prores 422 / warm camera prores 422 they are both scaled up to 400% In the left you see the cold camera Prores 422 recorded with the Atomos. In the right you see the warm prores 422 recorded with the Atomos. Here i also forgot to put the main lights out in my DIY green screen room, when i filmed the cold-camera shot with the prores 422. You can see that although the lighting is differently the noise is not. As far as i can tell?! -------------------------------------------------------------------------------------------------------------------------- So i think that i can conclude out of this, that the problem has nothing to do with a warm censor, but either with the HDMI output from the Lumix G7, or something with the Atomos, or something with the hdmi cable. Or maybe completely something else?? At the moment i am using a normal hdmi cable from 10€: https://www.amazon.de/gp/product/B00J99Z0SU/ref=oh_aui_detailpage_o03_s00?ie=UTF8&psc=1 Do you think i should buy the Atomos HDMI cable? Thanx in front greetz Lenny

Hello there, I have a Panasonic Lumix G7 and i just bought the Atomos Ninja Flame. Yesterday i made some test shots and they came out very noisy,..see picture Anybody got an idea why this could be? Or send me in the direction where i need to search to solve the problem? The G7 had following settings: ISO 640, aperture 3.5, shutter 50, white balance set manually , Picture style: Natural Contrast: -5 Sharpness: 0 Noise reduction: 0 Saturation -5 camera was set to 4K uhd .mp4 - 25fps 100mbs The Atomos was set to Prores 422 Is there anybody who was had something like this? I can't really think that so much noise comes from a ISO from 640? Maybe my censor from the camera became to hot (i read online that this can also cause noise) And there is a good change that my camera was to hot cause it was sitting exactly under the main lamp (800watt) which lights the front of the character. Today i am going to make the same shot with a cold camera and see if that was the problem. Meanwhile i hope somebody on the forum can lead me in the right direction to solve the problem. Thanx in front greetz Lenny

Hello there, I am new when it comes to filming professional in a green screen studio and i have got some beginners questions: -When i film in a green screen studio with a zoom lens 14-42 mm and i have set my white balance whilst the lens was on 14mm. Do i have to set a new white balance as soon as i change the focal length to 25mm? Cause changing the focal length of my lens also automatically changes my aperture. Thanx in front Greetz Lenny

Hello there, I have bought a Ninja Flame recorder (follow up from the assasin) Now i am wondering how it works with the G7: -How do i go about if i don't want to record the GUI from my g7's screen? I mean i want to see the data on my G7's screen, but i don't want to record it on the atomos. -And how do i go about with the peaking? Do i just turn of the peaking and use the peaking from the Atomos ninja Flame? And are there any other tips for somebody who just starts to work with an external recorder and the G7 thanx in front greetz Lenny