could u tell me whats diffrent between canon EF,L,USM lens and which lens is good telephoto wide angle etc. . . . ?
Apr 23, 2010 Lenses
could u tell me whats diffrent between Canon EF,L,USM lens and which lens is good telephoto wide angle etc. . . .
Tags: Angle, between, Canon, could, diffrent, EFLUSM, etc., Good, lens, telephoto, tell, whats, Wide
April 23rd, 2010 at 03:57
EF is Electro Focus (FF Autofocus)
EF-S (APS-C Autofocus)
USM – Ultrasonic Motor
L just means expensive
Just funnin’. . . L is good glass. L glass is available in both Telephoto and Wide angle.
April 23rd, 2010 at 04:07
http://www. digicamhelp. com/camera-logs/canon-xsi-450d/canon-lens-designation/
That is a link to a site with the info about Canon’s lenses. And just in case you might look at any Tamron or Sigma lenses, here are the designations explained:
Lens Designations – Sigma
APO – Apochromatic lens element(s)
OS – In lens “Optical Stabilization”, analogous to Nikon VR or Canon IS
HSM – “HyperSonic Motor”, in-lens ultrasonic motor, analogous to Nikon AF-S or Canon USM, etc
EX – “Excellence”, professional series.
DG – Coatings optimized for Digital SLRs, still usable on 35mm or full frame
DC – Lenses for DSLRs featuring APS-C size sensors only
DF – “Dual Focus”, lens features clutch to disengage focus ring when in AF mode
HF – “Helical Focusing”, front element of lens does not rotate (for when using circular polarizing filters)
Lens Designations – Tamron
Di – “Digitally Integrated”, featuring coating optimized for digital SLRs, but still usable on 35mm or full frame
Di II – Lenses for DSLRs with APS-C sized sensors only
SP – “Super Performance”, professional lenses
IF – “Internal Focus”
LD – “Low Dispersion” elements
XR – Extra Refractive Index glass
VC – “Vibration Compensation”, in lens stabilization
I compiled these two for Tamron and Sigma on my own some time ago when no one could answer this for me.
And as for which are good lenses, you will basically know by how much you pay for them if they are new. I would venture a guess that the only good lens Canon offers for less than $200 would be the 50mm f/1. 8 Otherwise, you are going to be looking at more money for a good lens.
You can find good used lenses on craigslist or auction sites (on sites like ebay make sure you read all the fine print). Just check the lenses value on a site like the B&H website in the used section to make sure you aren’t paying more than you should.