Royce Moss wrote:
Hey Hoggers, looking for a Macro lens for my 7100. I was trying to decide between Tonkia 100mm, Tamron 90mm or Nikon 105. researched all three and have narrowed down to the Tonkia or the Tamrom then I discovered a Sigma 70mm Macro and have read glowing reviews about it. Anyone have experience with the 70? It is more of the focal length I want. Thanks
You'll have a lot better luck if you look for a "Tokina" instead of a "Tonkia"... or a "Tamron" instead of a "Tamrom"
The Sigma 70mm is a long-discontinued model. There are much better.
I normally recommend a 90mm, 100mm or 105mm macro lens, for the working distance it affords you (about 12 inches at closest focus/maximum magnification), without being too difficult to hand hold steady.
The Tokina 100mm is a decent, but simple macro lens. With excellent image quality, it's one of the lowest cost macros available ($350). But in Nikon mount it does not have an in-lens focusing motor. That's fine on your 7000-series camera, which has a focusing drive motor in the body (as well as higher Nikon camera models). But it cannot autofocus on D3000-series or D5000-series Nikon cameras, which lack the in-body focusing motor. That may not matter now, but might if you ever decide to sell the lens, effecting its value to future Nikon users. Also, it's not an "internal focusing" design, which means it grows longer (a LOT longer), when focused close. This reduces working distance between you and the subject. Tokina also uses a rather unusual "focus clutch" method of switching between autofocus and manual focus. The lens' focus ring slides forward or backward slightly to change the setting. This works fine, but means that you either have autofocus or manual focus... you cannot manually tweak or override autofocus without first switching the lens to manual focus mode (all the other lenses mentioned here allow the user to directly override AF at any time).
Tamron actually offers two versions of their 90mm f/2.8 macro lens. Both have similarly excellent image quality. The older version uses a slower micro motor focus drive and, like the Tokina 100, isn't internal focusing. The newest version uses faster USD or "ultrasonic" focus drive, has VC or "vibration control" image stabilization and is internal focusing... but it costs about 50% more than the older version. Both the current Tamron lenses are able to autofocus on any Nikon body.
The Micro-Nikkor 105mm also offers excellent image quality, the AF-S version is able to autofocus fairly quickly on any recent/current Nikon camera body and it has VR "vibration reduction" image stabilization. But it also is the most expensive option, at about $900.
Sigma also offers a 105mm macro lens, very similar to the Micro-Nikkor 105 in all respects... currently selling for about $570. It's internal focusing, uses faster HSM "ultrasonic" focus drive and has OS "optical stabilization".
And, yes, Tamron also offers a "crop only" (DX) 60mm f/2 macro lens. It's quite compact, internal focusing and, thanks to it's unusually large aperture, may better serve dual purpose as a portrait lens than most macro lenses (most are f/2.8 at best). The Tammy 60mm is able to AF on any Nikon, but uses a slower micro motor type of focus drive. That's fine for macro and portraits, but it's by no means an "action/sports" lens. It can't keep up with fast movements.
FYI, Nikon themselves also offer some more compact macro lenses... AF 60mm f/2.8 D ($515, no in-lens focus drive motor), AF-S 60mm f/2.8G ($600), AF-S 40mm f/2.8G "DX" ($275), AF-S 85mm f/3.5G "DX" ($525), AF 200mm f/4D ($1800, no built-in AF motor). Micro-Nikkors are generally capable of very high quality images. But so are many of the third party lenses.
A couple notes:
For macro photography, fast autofocus isn't necessary. In fact, many times it's preferable to use manual focus. And, even with faster types of autofocus drive (such as Nikon's Silent Wave, Sigma HSM or Tamron USD), macro lenses are usually slower focusing than non-macro. This is because most macro lenses use a "long throw" focus design that emphasized precision over speed. Precise focusing is needed because depth of field can be very shallow at higher magnification.
And, for macro photography image stabilization is of rather limited usefulness... It simply doesn't help much at high magnifications. The best systems give about one stop assistance, at most, at full 1:1 magnification (which all the above lenses can do, BTW). Image stabilization, if a lens has it, may be more helpful if using the lens for non-macro purposes.
Have fun shopping!