THIS IS AN UPDATE CORRECTION VIDEO!!
Sony just announced a new 100mm f/2.8 STF GM OSS that is $1500 and T5.6!! & a 85mm f/1.8 that looks like a bargain!
CORRECTION - I thought STF referred to the electronic focus - IT DOES NOT! Please see definition below:
STF – Smooth Transition Focus, lenses that employ special APD lens groups that get thicker towards the edges and, because of that, reduce the amount of light passing through. Basically, these lenses are designed to deliver extremely smooth, silky out of focus highlights, but with some trade-offs, chief among which is the lack of autofocus. Also, even though the physical maximum apertures of STF lenses are generally wide, the actual amount of light coming through due to APD lenses is much lower (the difference between lens’ f-stop and t-stop can vary up to one and a half stop of light, meaning an f/2 STF lens would let in approximately as much light as a regular f/3.2-3.5 lens would). Finally, and this is a personal opinion, I find the excessively smooth rendition of out-of-focus areas to look lifeless, characterless and “plastic”. However, if you want a lens that delivers what is considered to be a superbly silky out-of-focus background/foreground with high image- and great build quality, and don’t care about lack of AF, a lens such as the Sony 135mm f/2.8 (T4.5) STF may just be what you are looking for. https://photographylife.com/sony-lens-abbreviations
Check out Matt's new buying guide!
Matt's Gear: http://bit.ly/MG-Gear
Get Your Gear Out!
Check out my downloadable video series:
Intimate Portraiture series: http://mattgranger.com/intimate
Take Control of The Light: http://mattgranger.com/light
The Business of Photography: http://mattgranger.com/business
Educating Tina: http://mattgranger.com/educatingtina
Kickstart Your Photography 6 month course: http://mattgranger.com/kickstart
Ethics and Conduct statement: http://mattgranger.com/ethics
Subscribe HERE: http://bit.ly/Sub_MG
Subscribe for News: http://bit.ly/Subscribe_MG_News
Google Plus: http://bit.ly/MG_Gplus
Community Forum: http://www.mattgranger.com/community/
Official Website: http://www.mattgranger.com
Please check out my art nude photography books
Private Bodies: http://www.mattgranger.com/privatebodies
Public Bodies: http://www.mattgranger.com/publicbodies
B&H Photo: http://bit.ly/bhphotoUSA
Amazon USA: http://bit.ly/Amazon_usa
Amazon UK: http://bit.ly/ukAmazon
Amazon Germany: http://bit.ly/DeAmazon