Im looking at getting a telephoto and a macro lens. What should I get? I have a canon ti camera. Any ideas?
for what kind of body? canon? nikon? pentax? etc?
What type of photography do you do? What is your price range? What do you already own?
The two things you want to do -- tele and macro -- are two different things. You need two different tools, not one which does both. A short tele macro (90 to 105mm) might fit both bills, but a good one is not cheap. In my experience, most new/novice photographers think of tele as longer than 100mm, more like 200 or more, especially for wildlife.
You are unlikely to find a lens longer than 100mm that does macro well without spending significant money ... if it even exists.
If you want to do macro in the range of 50-100mm focal length, get a true macro/close focus lens. Or, get a good fast prime (non-zoom) lens and use extension tubes to provide the macro capabilities.
The two best pieces of advice I can give after about 35 years of photography are:
- Don't try to "sneak up" on quality by buying something cheap and "good enough" now. You will end up wasting money. Save for the RIGHT tool and what you really need.
- Don't use zooms except for casual work. I don't give a rat's arse how good modern zooms are optically, they are crap for developing your photographic habits and good technique. Yeah, I'm a curmudgeon ... deal with it.
For a 35mm, the common macro lenses were 50 and 100mm. The old (1975 - 1979) Vivitar 50 macro, on film, was as good as the Leica for resolution. It couldn't come close in aerial resolution. Film was the limiting factor. Are you planning on using extension tubes or a bellows with the lense?
Since I've seen no mention of price you want to spend I'll lay out a few options.
Telephoto:
I own this lens, and recommend it highly (100-400 f/4.5-5.6 IS): http://www.bhphotovideo.com/c/product/162616-USA/Canon_2577A002AA_100_400mm_f_4_5_5_6L_IS_USM.html
I've shot quite a bit with that lens, everything from landscapes to portraits to sports. The range it covers is phenomenal. It is heavy, and it is expensive at 3 lbs and $1400 but well worth it.
If you arent looking for such a long lens, I would also recommend this one (70-200 f/2.8 IS): http://www.bhphotovideo.com/c/product/234444-USA/Canon_7042A002_70_200mm_f_2_8L_IS_USM.html it has a huge 2.8 aperture through the entire zoom range which makes it an excellent portrait lens. It is even heavier and more expensive than the 100-400 at 3.5 lbs and $1700 but is also well worth it.
For less money you can look at a brand like Sigma or Tamron. Both make great lenses (some lines) and they are generally less expensive. For example:
Tamron 70-200 f/2.8 $700 http://www.bhphotovideo.com/c/product/539396-REG/Tamron_AF001C_700_70_200mm_f_2_8_Di_LD.html
Sigma 70-300 f/4-5.6 $250 http://www.bhphotovideo.com/c/product/391074-REG/Sigma_508101_70_300mm_f_4_5_6_APO_DG.html
or
Sigma 120-400mm f/4.5-5.6 $850 http://www.bhphotovideo.com/c/product/549247-REG/Sigma_728101_120_400mm_f_4_5_5_6_DG_OS.html
For Macro:
For macro, I'm assuming you want something that gives you results like you've seen on the internet. Where someone took a picture of an ant, and it fills the frame of the image. For that, you really need a dedicated macro lens.
Canon 65mm f/2.8 $830 http://www.bhphotovideo.com/c/product/183199-USA/Canon_2540A002_Macro_Photo_MP_E_65mm.html
This is the lens that will do what you have seen on the internet, you can fill a picture with one grain of rice. Most macro lenses will only allow a 1:1 magnification of the object you are shooting, this one does a 5:1. If you go this route, it would be wise to invest in a macro flash head and a good tripod.