Taking the body out of the equation by using a L lens and non L lens on a same setup, (Say using a Semi-pro body like a 40D/50D)
I would say the focusing lock/tracking in AI servo differs by fractions of a second. (like what others have mentioned.)
Another underlying trait i noticed (moving from kit lens, EF-S lens or non-L glass to L lenses), is that the colour reproduction and contrast is much better when using L lenses. (assuming its the same Picture Style settings especially on the Neutral/Faithful profiles).
I like the natural contrast and colours that spins off from optics compared to using a normal lens and pumping up the in-camera settings like contrast and saturation plus sharpness. After comparing countless of shots even with similar lenses from 3rd party, I found that Canon L still give me spot-on colours (if your WB is calibrated correctly using a 18% grey card) and focus lock all the time. Even if you are using a 450D/500D.
Not up to qualification? Do you mean Picture Quality? If so, there is a huge demography of different yard sticks that people use to assess PQ. Of course if a lens performs well in almost any photographic tests you can think of, then the usual conclusion to make would be this XYZ lens is good. Getting to the point of if i have seen any L lens that is not up to mark in this context, I would say don't worry about it. Because there is very rare occurences of very bad PQ. Usually its a manufact fault which is no issue under warranty.
In the end, it really matters that you make the camera work for your style of shooting and you also harnesss the feature set available in your camera body along with the lens setup.
Just wanna share with you the experience i have gotten moving from normal Canon lens to 3rd party Sigma and then on to Canon L lense.
thks for the insight...
ok this might be a silly question:
say a L lens compared to a 3rd party lens.. where both hv very similar focal range and aperture.. will the L lens do wonders , say it can take low light scene at much acceptable level... or take fast speed object at much better capabilities? (remember that spec wise both lens same/similar)
I don't mean to be rude, but that IS a silly question. Do you understand the basics of metering and exposure? If not, it's time to brush up.
2 different lenses in the same situation, at the same focal length and aperture, will require the same shutter speed at the same ISO setting (minor transmittance differences, but no biggie), so what difference do you expect? L or not, it's not a magic lens.
And the terms you use -- "much acceptable level" and "much better capabilities" are vague and hardly objective. Please clarify.
that's why i am posting in the newbie forum la.. i am rather new which is why i mention it is silly question before i ask..
i ask this also because in this forum and many others make L lens sounds like some sort of super lens.. as if it will come rescue u in any difficult environment to take photos..
that term i use , well.. duuno la, maybe i mean if the photo will be a keeper or trash.. thats what i tryin to say
buy thks for ur answer.. at least now i wont make myself like a fool asking it again elsewhere ..haha
that's why i am posting in the newbie forum la.. i am rather new which is why i mention it is silly question before i ask..
i ask this also because in this forum and many others make L lens sounds like some sort of super lens.. as if it will come rescue u in any difficult environment to take photos..
that term i use , well.. duuno la, maybe i mean if the photo will be a keeper or trash.. thats what i tryin to say
buy thks for ur answer.. at least now i wont make myself like a fool asking it again elsewhere ..haha
ok this might be a silly question:
say a L lens compared to a 3rd party lens.. where both hv very similar focal range and aperture.. will the L lens do wonders , say it can take low light scene at much acceptable level... or take fast speed object at much better capabilities? (remember that spec wise both lens same/similar)
i feel it means that these lens can be mounted on to a single digit d series cam when the non-L cant?
but for sure the EF lens cant be mounted on the single digit d series
it's unlike nikon
not a canon person. don't really care anyway....
but for sure the EF lens cant be mounted on the single digit d series
it's unlike nikon