canon 18-135 stm vs non-stm

I was trying to sell my non used 18-135 lens and realized that there is a new version in town ? STM is new or just a different version of 18-135?

The STM is the new version of the lense that came out this year. It has a zoom lock buttom, different focus motor. Suppose to be better for video. Yours seem to be selling for 225-250 on this form.

mark2009 wrote in post #15300727
The STM is the new version of the lense that came out this year. It has a zoom lock buttom, different focus motor. Suppose to be better for video. Yours seem to be selling for 225-250 on this form.

Thanks mate.....

inspectoring wrote in post #15300695
I was trying to sell my non used 18-135 lens and realized that there is a new version in town ? STM is new or just a different version of 18-135?

The STM stepped motor is quiet and optimized for AF when using the video mode of the Canon T4i body. It's not as fast as a USM motor. Most tests so far have resulted in similar IQ or have given the edge to the newer version. I assume that the older 18-135 will be discontinued at some point,

Better build.. Better IQ.. More sharper.. Quieter.. zoom lock... Feels tighter...

MTF suggests that it's close or better than the 15-85 and better than the 18-135 IS. The 18-135 IS suggests that it is better than the 18-55 IS...
Kind of like 18-135 IS STM -> 15-85 -> 18-135 IS -> 18-55 IS....

I might add - I've had the 18-55 IS ( sucks ), 18-135 IS, and the 18-135 IS STM.. I have not had a 15-85 ...

wayne.robbins wrote in post #15310686
MTF suggests that it's close or better than the 15-85 and better than the 18-135 IS

I take manufacturers specs with a grain of salt. The 18-135 STM is a good lens for its intended purpose and I'm guessing you use yours on your T4i, not 7D. Most reviews I've seen so far have indicated the IQ of the new 18-135 STM is equal to, or only marginally better than, the older 18-135 mm. For those reviews where the 15-85 is compared to the 18-135 STM, it still remains the better lens on several levels. Perhaps you've seen reviews with different results.

@mwsilver - yes- you are correct- it sticks to the t4i for a light walkabout camera... I think I tried it on the 7D twice- just to see if it worked.. The 7D and 5D3 share a bag- with the 7D sporting the 17-50 OS, and the 5D3 sporting the 24-105- and both share the 70-200 f/2.8 mark II. (and the 50 f/1.4) .. And yes- it's all about it's intended purpose... I seriously only considered the t4i w 18-135 when the wife commented about me hauling too much stuff when we were out daytripping...

wayne.robbins wrote in post #15313772
@mwsilver - yes- you are correct- it sticks to the t4i for a light walkabout camera... I think I tried it on the 7D twice- just to see if it worked.. The 7D and 5D3 share a bag- with the 7D sporting the 17-50 OS, and the 5D3 sporting the 24-105- and both share the 70-200 f/2.8 mark II. (and the 50 f/1.4) .. And yes- it's all about it's intended purpose... I seriously only considered the t4i w 18-135 when the wife commented about me hauling too much stuff when we were out daytripping...

I'm sure the t4i and 18-135 STM make a great light weight and inexpensive walk around combination. 18-135mm is a very usable focal range and with its 7.5x zoom the design probably has less issues than a 15x lens like the Tamron 18-270 f/3.5-6.3 PZD. I have an 18-200mm Canon and i am less than excited by its build quality, sharpness, distortion and chromatic aberration, If the build of the new 18-135 is improved that can only be a good thing.