Mathew Collins

David, While watching 'Silence of the Lambs', my understanding was Jodie Foster and Anthony Hopkins are looking into the lens. Hi Brian, OK. very tight eye line is possible if an actor play to a piece of camera tape on the matte box. But I had a misunderstanding that if the character is directly talking to another character, the second character has to stand close to the side of the mattebox and that is maximum 'tight eyeline' is possible. As you said, if actor play to a piece of camera tape(sicked inside matte box close to the lens) very tight eye line is possible, than the actor stand close to the matte box.

David, Could you explain "very tight eyeline"? Does that mean the use of 'short focal length lens so camera is very close to actors' or long focal length lens where camera is away from actors( and hard to tell that they are looking into the lens or to the side of the lens or away from the lens)? -Collins.

In this shot, the 1st and 3rd actors are looking at almost same direction, 2nd actor looks at another direction, 4th actor looks at a different direction. The previous shot is,

Hi Mark, This is the image.

This is capture from "The Dressmaker" movie shot by Donald McAlpine. Good movie. Is any of the characters are directly looking into lens? What would be the purpose of directly looking into the lens other that subjective camera angle? -Collins

Thank you David. Great information.

Alexa65 sensor in opengate mode has 6560 x 3100 photo sites=20336000 Alexa65's sensor is 6.5K Canon 5DMarkIII's full HD video is 1920 x 1080 = 2073600 Canon 5DMarkIII's 5 sensor is 22.30 MP How does MPs and photo site calculation matches? by Mathew Collins.

Good information Frank. I have seen some people are using Kodak and Fuji viewing glasses. Do you have some experience with those glasses? I could read in the product features of Alan Gordon Gaffer's Glass that, "The Blue Ring Gaffer’s Glass™ is not designed to look directly at the sun. Use it only to locate the sun through clouds".

Tha Thanks Chris. I would start using my smartphone screen for viewing.

Chris, Thanks much for sharing your experience. From the information found in net, there is no recommend viewing glass which protects eyes. Some people suggest 'Welder glass of shade T-10 or denser'. Would Sunglasses with UV protection (99 or 100 per cent protection of UV-A and UV-B) help?

I want to know about the best Viewing Glass for sun to and to center lights? Would viewing sun through Viewing Glass harm the eyes? Is there any alternate ways to watch sun position of bight/dull/steady positions? Thanks in advance, Mathew Collins.

Really sorry for the late replay. Is that the reason, Red Helium 8K in anamorphic is 4400x3600 pixels, instead of 5184x4320?

What is the perspective behind that composition? Usually character looking to the lens would be followed by a subjective shot?

Typo-error. 'Floating Weeds' by Yasujirô Ozu.

I had an opportunity to watch 'Floating Weeds' vy Yasujirô Ozu. Looks like the characters looking directly towards the lens during dialogue? Is this a style of composition by Ozu? Any observations from anyone?

Thanks much Tristan. My question was whether in the normal shooting cinematographers set Entrance Pupil position as the pivot point for camera panning. The documents which i found in internet are similar to the knowledge which you have shared.

Hi, What is the importance of making Entrance Pupil position as the pivot point for camera panning? Please share your inputs. Thanks in advance. -Mathew Collins

Hi, Is the calculation given in the following link correct? https://www.abelcine.com/articles/blog-and-knowledge/tech-news/red-weapon-8k-lens-options Red dragon sensor - 3776x3160 Red Helium 8K - 4400x3600 The effective pixels of Helium sensor is 8192 × 4320. Not able to understand 4400x3600. I think for anamorphic it should be 5162x4320. Please share your inputs. -Mathew Collins

Thank you Dom. My understanding was Fullframe and Super35 was same in dimensions. >Full frame is the area between 8 perfs of 35mm film, roughly 36mm x 24mm, historically a still photography format. In that case Canon 5DM3 image area is bigger than AlexaXT's. 5D is 36 x 24mm and Alexa is 23.76 x 13.37 mm

Hi, I was reading about the new lens here. https://www.angenieux.com/optimo-ultra-12x-ffvv/ This is a new lens can be configured in three different versions: S35 (Ø 31.1mm), U35 (Ø 34.6mm) and FF/VV (Ø 46.3mm) with dedicated sets of rear and rings. Few questions about the features given in the link. 1. My understanding is Super35= The size of silent 35mm film, U35=4K, FF=Full frame. What is the difference between Super35 and FF? 2. Very short MOD 1.22m/4’1’’ in S35 – 1.24m/4’1’’ in Ultra S35 – lower or equal to 1.5m /5’ in FF/VV What is MOD? 36 mm 435mm ----------- ----------- 3. Object dimensions at MOD (mm) 462×640 41×56 Kindly share your inputs. -Mathew Collins.

Thank you all.

That was a mistake. Please read "I quoted from 'Cinematography - Theory and Practice' by Blain Brown page 278. If CoC is 0.001, then the calculated hyperfocal distance would be 20 feet." as I quoted from 'Cinematography - Theory and Practice' by Blain Brown page 278. If CoC is 0.001'', then the calculated hyperfocal distance would be 40 feet.

I quoted from 'Cinematography - Theory and Practice' by Blain Brown page 278. If CoC is 0.001, then the calculated hyperfocal distance would be 20 feet.

Hi, I have seen the following calculation in a book. "For example, for a 50mm lens at f/8 with a circle of confusion of .0001", the hyperfocal distance is 40 feet. Thus, if you set the focus distance at 40 feet, everything from 20 feet to infinity will be in focus." If i calculate using the formula H = F x F / (f x Cc) = 50mm x 50mm /(8 x 0.00254mm) =123031.5mm =403.64ft Anything wrong with my calculation?