lonewolf456 wrote:
I have a refurbished Canon T4i with an 18-135 lens. I shoot close up of flowers and wildlife, from a distance. Looking for lenses that would enable sharper photos if both. Suggestions please.
How much do you want to spend? How large a lens are you willing to carry?
For close-up photography, a macro lens is ideal. There are a number of those at different price points with somewhat different features, but most are capable of making fine images.
Canon EF-S 60mm f/2.8 USM is one of the more affordable macro lenses. Normally I'd recommend a longer focal length for more working distance, but much flower photography isn't done at the lens' highest magnification, so a 60mm might be find an is relatively compact. $400 right now, plus about $30 for the lens hood (sold separately).
Tamron SP 60mm f/2 Di II Macro/Portrait is also quite compact and a stop faster than most macro lenses, making it better than most as a dual purpose lens, for portraiture too. Both this Tamron and the Canon 60mm are "internal focusing", meaning they don't grow any longer when focused closer. The Canon 60mm uses faster, quieter USM focus drive... while the Tamron 60mm uses slower micro motor to focus, not able to keep up with sports/action, but find for macro and portraiture. The Tamron fine lens that costs anout $525.
Tamron SP 90mm f/2.8 Di... there are two versions.... a cheaper one ($500) that has fine image quality, but uses slower micro motor to focus and isn't internal focusing. The more expensive ($650) version has faster USD focus drive, is internal focusing and has VR image stabilization.
Tokina AT-X 100mm f/2.8 FX is one of the most affordable macro lenses, currently on sale for about $360. It's not fancy... not internal focusing, slower micro motor focus... but is fine for macro shooting.
Canon EF 100mm f/2.8 USM is an older, but still excellent design that sells for $600... internal focusing, faster USM focus drive.... it and the other Canon 100mm are also the only macro lenses around these focal lengths thant can optionally be fitted with at helpful and useful tripod mounting ring (tripod ring B costs an add'l $150, but there are 3rd party clones for around $50)... lens hood sold separately (Canon $25, cheaper clones avail.).
Canon EF 100mm f/2.8L IS USM is a newer design with images stabilization added, that costs $750 (lens hood included, like most L-series lenses... Canon Tripod Ring D, $172. Vello clone tripod ring, $50.)
Sigma 105mm f/2.8 DG OS HSM has image stabilization and faster ultrasonic focus drive. It's on sale right now for about $570.
All the above are capable of excellent image quality. Some have image stabilization, which has limited effectiveness at higher magnifications but may prove useful for other types of shots. I mention slower micro motor and faster ultrasonic focus in several cases, too... but be aware that even the fastest focusing macro lenses aren't especially fast. In order to focus from infinity to 1:1 magnification, they have to move a group of lens elements a long, long way! They also are typically designed with "long throw" focus that emphasizes precision, over speed. That's because depth of field can be quite shallow at high magnifications, making precise focus all the more important. Many of the lenses mentioned have a "focus limiter" feature that can help with focus speed a bit, which can be set by the user to make the lens focus within a certain range and have to do less work for each shot.
Personally I use a Tamron SP 60mm, a vintage manual focus Tamron SP 90mm, a Canon 100mm USM (older version), and Canon 180mm f/3.5L USM macro lenses. I also use several other lenses for close up work, that aren't technically macro lenses.
If budget is tight, you actually should be able to do pretty well with the 18-135mm lens you have.... if yours is the older micro motor version I or II of that lens (not marked STM or USM), it's only able to do approx. 1/5 life size on it's own. The newer STM and latest USM versions of the 18-135mm are a little closer focusing, able to do better than 1/4 life size on their own. But any of them can be made to focus closure using Macro Extension Tubes. These come in sets with several sizes that can be used individual or together to act as spacers between the lens and camera, which will make the lens much closer focusing. The Kenko tube set is one of the best and reasonably priced around $125. There are cheaper ($50 to $75), but they are a little to a lot more "plasticky". Canon also makes their own, but only sell them individually and they are pricey.... one Canon tube costs more than the Kenko set of three, which are similar quality. Nice thing about macro extension tubes is that they are very universal... can be used with almost any lens that fits your camera. They also have no optics to "mess with" lens image quality. Easy to use, too.... I always carry a few of them.
For wildlife photography, you will want a longer focal length lens. They really aren't long enough for some things, but among the more compact and affordable are Canon EF-S 55-250mm IS STM ($300 + $25 hood) or EF 70-300mm IS USM "II" (on sale $450 + $45 hood) or the earlier version EF 70-300mm IS USM, discontinued but still avail. new for $375 (+$38 Canon hood or $15 Vello hood). AVOID the really cheap Canon EF
75-300mm "III" lens (often $200 or less)... it's slow focusing, lacks image stabilization (important and very helpful on longer telephotos like these), and just doesn't have the best image quality. The EF-S 55-250mm is a much better lens for just a little more money. Top of the line is the Canon EF 70-300mm "L" IS USM, more sturdily built, better sealed for weather and dust resistance, high performance in all respects, and able to optionally be fitted with a tripod mounting ring... but a lot more expensive at $1350 (hood incl., tripod ring C costs $165).
However, longer focal length might be needed for wildlife... especially smaller and shyer critters! The Canon 100-400mm IS USM II is a superb lens, very sharp (uses fluorite), fast focusing, high performance in all respects... but 3.5 lb. and close to $2000. Sigma and Tamron both now also offer more affordable 100-400mm lenses. There are lots of detailed reviews comparing these three online, but basically they both sell for about $800, and are both a little smaller and lighter than the Canon. Between the two, the Sigma appears to be slightly sharper, but it doesn't have and can't even optionally be fitted with a tripod mounting ring, which I consider to be an essential feature for long focal lengths light these... especially when they're used on a crop sensor camera like yours (and mine, for that matter). The Canon 100-400mm comes with a tripod ring included... The Tamron doesn't include it, but they offer one optionally, sold separately for $129. The Sigma doesn't even have option for a t'pod ring.
The Sigma also is the "slowest" of these three lenses. It's f/5 at 100mm, but it drops to f/5.6 almost immediately when zoomed, until around 235mm when it further drops to f/6.3... It's actually 2/3 stop slower than the Canon through most of their focal length range...The Tammy is 1/3 stop slower than the Canon at many focal lengths. 1/3 or 2/3 stop doesn't sound like much... but none of these lenses are "big aperture/low light", and some of the best wildlife photo opportunities are in low light conditions. Of the three, the Canon has the best chance of being able to "get the shot"..... but the third party lenses are much less expensive.
If you are willing to carry around a bigger, heavier lens... there are also Sigma and Tamron 150-600mm zooms available. These are more likely to require a tripod... or at least a monopod (all the 150-600s come with tripod rings incl.) Sigma actually makes two versions... a more affordable "C" or "Contemporary" for about $1000 and a higher performance, better sealed and more durable, but bigger and heavier "S" or "Sports" version that costs $1800. Tamron's current 150-600mm model is a "G2"... their second, improved version... that's selling for $1300. Their prior version is discontinued, but still available for around $800. All these lenses have image stabilization (essential!) and reasonably fast ultrasonic focus drive. They are all about 4.5 lb., except for the Sigma "Sport", which is around 6 lb.
A worthwhile alternative is the Canon's EF 300mm f/4L IS USM (which works well with their 1.4X teleconverters, to make it a 420mm f/5.6). That lens costs $1350 (teleconverter 1.4X III is another $430) and is a stop faster and a little lighter than many of the zooms... but not quite as versatile. The Canon EF 400mm f/5.6L USM is also a superb lens, is on sale for $1150, but it lacks image stabilization (so is more likely to require a tripod or at least a monopod) and it will not be able to autofocus on your camera with a teleconverter added. (Same with the zooms... adding a TC to any of them will make your T4i unable to AF too. But some of the newest camera models can AF additional lens/TC combos, if you ever upgrade that too.)
There are other faster, longer more powerful and high performance telephoto lenses and zooms... but the prices are MUCH HIGHER than what's listed above.
Hope this helps! Have fun shopping!