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tamernagy · ‎10-05-2013

Using canon T5i with 18-135mm STM as all purpose travel lens. Finally decided to upgrade to an L series lens 24-105mm. Do I still need to keep my 18-135mm or sell it and use the new lens as all purpose lens
Also is the upgrade worth the money ??

bratkinson · ‎10-08-2013

I started with an 18-135 (pre STM version) and a 30D and was quite satisfied, until it came to low-light indoor photography, which turns out to be about 90% of my shooting. The 18-135 was just too slow and required an external flash most of the time. But as an all-around zoom, I loved it! After upgrading to a 60D, its slow speed was a major hinderance, so I replaced it with the 24-105L, knowing I'd one day go to full frame. But 24 (=38mm lens angle of view on the 60D) wasn't wide enough for smaller rooms at church. So I sprang for a 16-35 f2.8L ii for those smaller spaces.

I still miss the zoom range of the 18-135. Surprisingly, since upgrading to full frame about a year ago, the 16-35 sits mostly unused as the 24-105 is 'wide enough' and mostly 'long enough', too. My flash still sees some action as well, but not as often since going to the 5D3.

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ebiggs1 · ‎10-14-2013

You are correct, sir. Sorry, got my fingers typing before my brain was turned on!

The f-ratio is fixed. There that is better. It doesn't change, get slower, as you zoom.

The 17-40mm f4 does keep it's shape, length, as it zooms and I was thinking of it earlier.

EB
EOS 1DX and 1D Mk IV and less lenses then before!

trulandphoto · ‎10-15-2013

@ebiggs1 wrote:
You are correct, sir. Sorry, got my fingers typing before my brain was turned on!
The f-ratio is fixed. There that is better. It doesn't change, get slower, as you zoom.
The 17-40mm f4 does keep it's shape, length, as it zooms and I was thinking of it earlier.

These lenses also don't extend as they focus which some of the other lenses do.

Technically, the 17-40 does extend and contract as it zooms it just does it inside the filter thread. So if you've got a filter on it looks like it's internal movement. The front element, however, does move. A nitpicky distinction to be sure.

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24-105mm EF IS