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Suggest a good "Do it all" lens for my canon t4i
#11
@klaus, how do I know if 18-135 is sufficient? Can you explain what you mean about 24mm? And which lens and manufacturer is it?

Re


Really, may be I need to understand what these measurements really mean. Why is a wide angle a wide angle? Can you please educate me a bit? I will appreciate it very much. Thanks.
#12
Well, the focal length is usually normalized to full format specs in order to be able to compare different systems. Most people, me included, also think in those full format terms when classifying a lens.

 

Canon APSC DSLRs have a 1.6x factor here, so the 18-135mm is a "28.8-216mm" lens in these terms.

Whether this is sufficient ? Well, you got a 18-55 and 55-250 lens now so you have a 100% overlap here. With the 18-135mm, you have about half of your tele reach (135mm vs 250mm obviously). Unless you shoot wildlife this is probably a lesser issue but only you can decide this.

Now on the other side of the discussion, 18mm (thus "28.8mm" on full format) is quite wide, but for landscape, things are never really wide enough.

 

The suggested Sony RX10 has a somewhat smaller sensor (still fairly large) with a 2.7x factor. The Zeiss lens has a an equivalent range of "24-200mm" (the other specs of the Zeiss lens are slightly better).

The "24mm" at the wide end may not sound that much of a difference but it is actually quite noticeable.

Additionally, the RX10 is (way) more compact.

 

Have a look here for a visualization of the focal lengths (in full format terms):

http://www.sigmaphoto.com/lenses/lens-resources

 

Your existing setup covers "28.8mm" (=18mm*1.6) till "400mm" (=250mm *1.6).

 

Of, course the other option would be to go for an extreme zoom:

http://www.sigmaphoto.com/product/18-250...-macro-hsm

http://www.tamron-usa.com/lenses/prod/18...ad-image-0

We haven't tested the Sigma yet but I could imagine that it could be a better bet - Tamron went too far with the miniaturization of their offering. However, you will give up some quality here for sure.

 

If you can live without a long tele lens, I'm with Rainer and the Canon EF-S 15-85mm = "24-136mm". You could still take the 55-250 IS for those occasions when this isn't enough. The way you described your goal this doesn't seem to be the case here though.
#13
I agree to the need of 24mm equivalent. Though that Cannon 15-85 is slightly heavier than such a lens should be; my personal upper weight limit for all-around lens is 500gr.

 

My choice would be one of:

- Sony APS-C DSLR + 16-80 f/3.5-4.5

- Sony APS-C DSLR + 16-105 f/3.5-5.6

- Nikon APS-C DSLR + 16-85 f/3.5-5.6
  


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