Minolta STF 135mm f/2.8 T4.5* lens

Infobox photographic lenses
name = Minolta STF 135mm f/2.8 [T4.5] *


caption =
maker = Minolta, Sony
feat-is =
feat-usm = n
feat-sbf =
feat-macro = n
feat-special = Smooth Transition Focus
application = Smooth Bokeh
type = Special Prime
flength = 135mm
fov =
aperture = f/2.8- [T] 4.5 - f/32
groups = 6
elements = 8
diaphragm = 9/10 circular
close-dist = 87 cm
max-mag = 1/4
max-diameter =
max-length =
weight = 730 g
filter = 72 mm
hood = Bayonet
av-horiz = 18.2°
av-vert =
av-diag =
start = 1999
stop =
replace = Minolta version succeeded by Sony version in 2006
msrp = $1200 USD (Sony version)
category = Minolta lensesOriginally produced by Minolta, and currently produced by Sony, the STF 135mm f/2.8 [T4.5] *, is a photographic lens compatible with cameras using the Minolta AF and Sony α lens mounts.

The STF is a manual focus only lens, due to use of an apodization filter that provides the high quality bokeh effect and is incompatible with the autofocus system used in Minolta and Sony SLRs.

The F-number in this lens refers only to the depth-of-field produced by its use. The T-number refers to the brightness of light which passes through the lens and is collected on the film or sensor.

ee also

*Minolta/Sony Autofocus Mount cameras and lenses

References

* [http://www.the135stf.net/ Dedicated site for the STF / Review site] with [http://www.the135stf.net/samples.html sample photos]
* [http://www.dyxum.com/lenses/detail.asp?IDLens=76 Technical data and user reviews] on dyxum.com
* [http://www.dyxum.com/columns/articles/lenses/SAL-135F28/Sony-AF-135-STF-SAL-135F28_review.asp Full review] on dyxum.com
* [http://www.mhohner.de/sony-minolta/onelens.php?id=af135f28stf Technical data] on "mhohner.de"
* [http://www.magnuswedberg.com/index.php?doc=STF-review Review] on Magnus Wedburg

ources

* [http://www.dyxum.com/lenses/detail.asp?IDLens=308 Dyxum lens data]