Talk:List of abbreviations in photography

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Back-focus & Front-focus. I have come across these terms abbreviated to BF and FF. However, I hesitate to include these abbreviations in the list. Discussion of these anomalies, on the photography forums, seems to generate more heat than light. The terms could be ambiguous: most discussion concerns camera owners believing (rightly or wrongly) that their camera-lens combination fails to autofocus accurately, producing the sharpest image either beyond ("BF") or in front of ("FF") the desired plane. However, some Wikipedia entries (eg: Focal length) also cover the terms Back Focal Length and Front Focal Length, which relate to lens geometry. Do others think that BF and FF should be included as abbreviations in photography, or is the danger of ambiguity and lack of importance sufficient reason for ignoring them? martinev (talk) 17:43, 6 March 2011 (UTC)[reply]

On two occasions people have, with the best of intentions, corrected 'typos' which they should have left alone. The abbreviation Tv should not be 'corrected' to TV. Tv is the correct abbreviation for Time value: the mode setting where the photographer defines the exposure time (ie: shutter speed) and the AE takes care of the rest. Av is the corresponding abbreviation for Aperture value, where the f-stop is fixed by the photographer. Sv is the abbreviation for Sensitivity value where the photographer sets the ISO value. martinev (talk) 22:10, 8 January 2012 (UTC)[reply]

Citations[edit]

Someone added the refimprove tag: "It needs additional citations for verification" in December 2010, soon after this article was created and while it was still work in progress. The article currently has 23 references, 3 bibliographic citations and 8 external links to other bibliographic citations. I propose to delete the refimprove tag by the end of January 2012 unless there is a strong objection. martinev (talk) 23:10, 26 January 2012 (UTC)[reply]


About FF and BF, technically there is no such thing. They are simply symptoms of a focusing system not being calibrated--the system either focuses correctly or it does not, in which case it needs to be adjusted. The problem is actually an image space problem where the image is not being focused at the image plane. It is not an object space problem where the camera cannot focus on the object. The conventions in photography don't allow the image space to be projected on the object space. Having said that, the terms BF and FF are common among photographers. I think making a reference to these terms is acceptable, but the terms need to be framed in a proper way.

Shashinka (talk) 20:08, 14 August 2012 (UTC)[reply]

Av & Tv vs A and S[edit]

I may be wrong (can't research at present, sorry), but it feels odd to see Av & Tv suggested as the vendor-neutral versions while A and S are listed as manufacturer variants. Canon and Pentax do the former (and I believe no others), while the page catalogues a rather longer list who do the latter.... Eftpotrm (talk) 12:32, 8 May 2013 (UTC)[reply]

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