Densitometer Status

[pacificiam]

I want to know, Why densitometer having different status?
Like Status A,E,I,T.
What is logic behind it?
Where to use which status?

[meddington]

Statuses exist due to different filter sensitivities and different bandwidths to match particular media (Status A for photographic film/slides, Status T for presswork), and to some extent, preferences in geographic location (T for North America, E for Europe). Which status to use depend on what your measuring and where your located (i.e what everybody else in your area is using).

[pacificiam]

What about I?
Status of T is confusing?

[meddington]

Status I is a narrower bandwidth, arguably more sensitive for ink film thickness variation, but perhaps not wide enough for the 'gamut' of ink sets used in printing (just a thought). In any event, its rarely used. Status T is the defacto status for the US, and E for Europe, with E have a narrower blue filter, and therefore more sensitive to yellow variation (yeilding a higher density value for yellow). Geographical regions latched on to a preferred status and are reluctant to let go (like metric versus imperial), so what whether you use E or T depends on where you are and who you communicate with. As long as your consistent and up front with what status your using, you should be fine.

[pacificiam]

thanx you very much

[Bondi_dan]

Status E and Status T are ISO Standards.

Mainstream and probably the best way to go.

Regards,