majoraxis Posted October 18, 2021 Share Posted October 18, 2021 I have an old P+S Technik Pro 35 PL to B4 P+S Image Converter that projects the lens image on to a vibrating screen to be picked up the a 3-CCD B4 camera sensor. I saw that at one time they sold a version that could work with an iPhone. I was researching if I could convert the Pro 35 adapter for iPhone and found the Pro 35 manual on line. I was not able figure out how to make it work with an iPhone but I did come across what they P+S Technik felt contributed to look of film which I thought might add to the discuss about what make something "cinematic". Film-Look: Which elements are important? Framerate: Film works only with complete pictures, that means progressive with 24 or 25 Hz. Television systems work currently for the most part with half pictures (interlaced), that means with 50 or 60 Hz.The higher the frame rate, the higher is also the motion resolution. A football game with "only" 24 Hz would not be as informative for the viewer as football game with 50 Hz. Exposure time: The common shutter speed result for ﬁlm cameras result normally from the frame rate. This is mostly 1/48 s., 1/50 s. or 1/60 s., some applications request a shorter exposure time. Electronic cameras work generally in the same manner, but the consolidation between frame rate and exposure time is not as steep. This means at for example 60 frames per second there is also a longer exposure time possible (up to 360 degrees Hell sector = 1/60 s.) Motion blur: One characteristic of the so called ﬁlm look is the motion blur. Low frame rate / long exposure time lead to a higher motion blur compared to television - beneﬁt from this creative tool. Shutter effect / strobing: Is your pan jerky? Probably your pan velocity is not adjusted to your frame rate (and your motion blur). Check the pan velocity against the focal distance, e. g. in the manual of the ASC (American Society of Cinematographers). Also newer monitors show the pictures often "jerky". Chose your equipment accordingly to your reporting (TV/cinema) and your method of recording (interlaced/progressive). Method of recording: INTERLACED is still a widespread method for increasing the motion resolution (50/60 Hz). Use this method creatively, e. g. for a later slow motion (Example: convert 50/60 Hz interlaced to 50/60 Hz progressive, afterwards rendering with 24/25 frames/s.). De-interlaced is often used for the printout. PROGRESSIVE is used for printing out the material; this is often more close to the ﬁlm look, because of a lower motion resolution (24/25 Hz). Compression: Unfortunately, the recording quality is highly dependent on the format of recording. A lot of today's used data compression programs are for example highly sensitive to noise or quickly changing picture contents. While recording do not only trust your picture on the monitor (it shows often the uncompressed signal), but test how the recorded signal is behaving in different recording situations (see also: TARGET SPEED above). Depth of ﬁeld: Like the human eye has a selective perception, also ﬁlmmakers and cinematographers use the depth of ﬁeld for calling the attention of the viewer to speciﬁc things or also to detract from something. At the same time the effective size of the picture plays an important part: The larger it is, the lower is the depth of ﬁeld; small amateur cameras work often with very small sensors and that's why their picture comes across as unnaturally sharp. The P+S Technik Image Converter allow now the identical depth of ﬁ eld like in 35 mm ﬁlm on an electronic camera with a considerably smaller size of the sensor. Choice of lens: The choice of lens is - especially in combination with high-resolution cameras - clearly visible. Therefore, test the lenses before shooting! See a list with applicable lenses in the annex. Aspect ratio: Because of the fact that the human eye has a considerably larger horizontal ﬁ eld of vision than a vertical one, a lot of ﬁlms used already very early an analogous larger aspect ratio for achieving an impressively large screen projection (Example: Cinemascope). Like this a different visual effect is produced for the viewer only because of the picture size. Juank and Emanuel 2 Quote Link to comment Share on other sites More sharing options...
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