Below are some of the highlighting features extracted and revised from my earlier web sites to refresh & understand the concept, in a simple manner. 

I.1)          Flash selection is probably a 4^th generation technique with more features.

I.2)          Flash selection could help to extend the Dynamic Range.  

I.3)          This would serve perhaps, as the only conceivable simplified auto selection technique that could be implemented in Analogue, Digital versions of Photo, video and Cine- cameras, by incorporating varying level of flash sync at much higher speeds. It can also be executed by adapting as an external shutter, based on my conception & design that shall be utilized with the latest or models any of camera. 

I.4)          Flash selection has the purpose, both as a selection tool as well as it excels as an image enhancement tool.  The chroma-key and motion-control we know are only meant to  perform only one purpose. 

I.5)          Flash selection would enable to extract only the shadow, --i:e,The shadow that we understand by its true implied meaning, as it is known in photographic parlance…(this is in contrast to other Image Editing software where a command invoked to 'Select Shadow' would invariably be misinterpreted in a selection, that all the tones beyond mid-tones to tones of black are treated as Shadows). An onstage preview of this shadow-Control would be a fabulous facility for a professional assignment like Industrial, fashion, Tabletop photography. 

I.6)         The selection hence made on the key frame could be supplemented or be merged with, similar area of another frame which has, used a flash as a frontal fill-in , where  main light we had used  casts a shadow or could not reach, specially in the case where the details are in the sunken area . For example in an industrial photography of machinery, or fashion photography at outdoor.  Just a flashing does all these tricks! Amazing, why not any body ever had informed such earlier!  'A flashing' here means, a flash of lower output and now it is the first timewith an improvised technique it could be  successfully employed.  

I.7)          An inverted selection of shadow enables, an expression that could demarcate the highlight or mid-tone in-order that they can be to 'pulled down', at the image-capture OR later-on to  accommodate-in the printing range, or by image editing. 

I.8)          So how a Highlight actually be defined?  All the whites?  Specular-Highlights?  I, some- how, not convinced in a solution by defining a high-light this way. Rather I would as  how a Shadow-selection method could able not treat a Black as shadow, similarly the methods employed to select Highlight (adopted by others) should be expected, to not to treat, whites as a constituent of Highlight. This should be the very essential attribute which will characterise the thinking like an human, we call it an Artificial-intelligence (AI),that a soft ware should possess.

I.9)          To strengthen the shadow on a subject, with a flat lighting, 

I.10)     Shadow selection –could become a firmware, in built into the camera,In the CCD & CMOS sensors, that could address the difficulties faced on extending the Dynamic Range. 

I.11)     provides a method where by the sheen, luster, shining-ness or the specular high-lights could be controlled after a  shoot. for eg., in product (pack)shot.   

I.12)     A firm-ware which would enable to alter the back-ground. For eg., A golden tint to the sand , more Blue to a seascape and sky, Greener greens of meadows , A Rosy  or Lavender to a flower garden ,… every thing that could be opted through a menu option. 

I.13)     The reference frame thanks to the flashing, records additional information of color and luminosity (density) value of the subject, in the form of a Separate record of frame. It would perhaps carry more / additional information than the ability of key lighting alone which might have failed to capture,or reveal. 

I.14)     The flash selection takes care that the character of the 'Primary' (intended) lighting, Is not disturbed, even when a stronger fill, when imposed upon. In the case of the conventional lighting of fill-in, the character of lighting of main / key light gets affected or killed altogether. 

I.15)     Facilitate to Improvise Lighting at post production, to a much greater level than it is ever heard of or being practiced.  It is entirely different than the 'lighting' in the 3D environ we often hear, or the simple exploits of darkening or lightening of tones as is done with an image editing soft-ware.  i.e., they are, just not comparable to the kind of  improvisation achievable by flash-selection. 

I.16)     It also is capable of distinguishing objects  in the 3^rd dimension of space, namely the space of distance. Thereby the image detail of foreground could be isolated from the background in a progressive manner. 

I.17)     It could support another methodology, which could be called as Block Selection.  

I.18)     Block selection:  What it implies is that the entire elements present inside the confine of e.g., Room, Room space, the surrounding Wall Area, could be selected as a whole entity as a block, hence excluding the outdoor area like a scenery which is seen through the windows or door- ways. These outdoor VS indoor elements could be balanced for… Lighting, Contrast-level, Color-temperature, or ...be Replaced,. OR.. Painted-upon etc.)  

I.19)     This process enables a masking option through selection, hence, it nearly eliminate the need for balancing the intensity and color temperature of the lighting between an indoor and the outdoor, and the both in-view of a shoot would be combined.  Hence the lighting power consumed could be kept to minimum and the light that would otherwise be lost through filtering to correct the mismatch of color temperature, be negated. Similarly an exterior view of or the entire house with foreground elements, the confined space with in an automobile (car) could be Isolated/ Selected against the backdrop of sky, others buildings, trees etc.,  

I.20)     This methodology to avails a solution that is capable, to confront the high contrast due to fall-off of lighting, invariably when photographing corridor, temples, or dark shadows that prevails within the Portico of a bright exterior of a house…to handle the subjects on travel and candid photography for better impact etc.] 

I.21)     Serve as a solution for a problem, which is unresolved, for a long time. In  the case of videography (we usually encounter darkening of figure in the foreground when composed against bright back-ground)….  correction to such defects could be automated so that it could happen stage of a shoot .Similar correction could also be obtainable for a Digital still camera. 

I.22)     Flash of lesser output of light all that would be sufficient to serve as a filler-light on a, sunlight condition of outdoor of harsh contrast. To carry out an assignment with few lights with low capacity of light out-put, to handle such a situation.

I.23)     The new type of shutter, in combination with image editing facility, may be the best solution to counter / prevent the glare on the lens, which ruins an image in the first place  

I.24)     Ideally a fraction of pushup we do on film developing allows, gaining more saturation by increasing the formation of dye (dye-density) but at the risk of elevated contrast.  This excessive contrast could be rolled back, as it is suggested, under the topic of "controlling lighting at post production" 

I.25)     As a means to infuse intelligence to detect the location of deep crevices, pits from a plane or crest area,which is simply outside the scope of photography. 

 Please note: The information /guidance provided and my suggestions as above  or from any of my web page, of similar content published in my other web-sites are prohibited for  commercial usage or for publication purpose ,without the consent of the ,author s.kalaivanan the proponent of the idea/ concept