lens: December 2007 Archives
Camera lens review - AF-S VR Micro-Nikkor 105mm f/2.8G IF-ED
Nikon's AF-S VR Micro-Nikkor 105mm f/2.8G IF-ED macro lens is a quality piece of glass that results in extremely sharp photographs. With a reproduction ratio of up to 1:1, it is considered a real macro lens. The Nikon website has all the technical specifications listed, so we won't rehash them here.
Looking through photographer message forums, it's common to come across a few gripes that refer to the high cost of this macro lens. However, the $755 USD price tag it currently sells for at Amazon, is what you would expect to pay for good quality. Considering most photographers only purchase one macro lens, choosing quality the first time round, will save you the frustration of having to buy again.
Listed below are the reasons why Nikon's AF-S VR Micro-Nikkor 105mm f/2.8G IF-ED is considered a quality macro lens, as well as any disadvantages we've noticed since purchasing it a few months back. At the end of this review, you can also view extra examples of macro shots taken with it, so you can see the quality for yourself.
Advantages of Nikon's AF-S VR Micro-Nikkor 105mm f/2.8G IF-ED macro lens
The main advantage of this lens has to be the vibration reduction (VR) control. Actually at the time of writing, it is the only true macro lens that offers a vibration reduction.
Why is this important for macro photographers?
The short answer: It allows a photographer to get more of the insect or flower in focus, while at the same time hand holding the camera.
The long answer: Vibration reduction allows a photographer to hand hold their camera at a much slower shutter speed (up to 4 stops) than would otherwise have been possible. Shutter speed often effects how sharp an image will be. A general rule of thumb would be to ensure your shutter speed is faster than the focal length of your lens. For example, if you were using a macro lens with a 105mm focal length, then your camera's shutter speed should be at least 1/125 or 1/160th of a second or faster. However, when you have a lens that has vibration reduction, it is possible to set a slower shutter speed of say 1/60th of a second and still get sharp shots when hand holding your camera.
How is a slower shutter speed useful in macro photography?
When it comes to correct exposure (whether a photo is too light or too dark), shutter speed and aperture work together. If you're not sure what aperture is, you can find a good article called: What is aperture mode. Basically the lower your f number (aperture), the less of the shot that is in focus. Nikon's AF-S VR Micro-Nikkor 105mm f/2.8G IF-ED lens (and other macro's) take this to the extreme. Photographing an insect with an aperture of f/7.1 might only get the head of the insect in focus. Take the image below for an example.
The macro photo above was taken with an aperture of f/7.1. Luckily for the photographer, it was also taken in sunlight and he was able to keep the shutter speed at a fast 1/1000th of a second.
If this same shot was to be taken under the shade of a tree, the shutter speed would most likely need to go down to 1/20th of a second to achieve a correctly exposed photo. Of course this would cause an extremely blured shot due to camera shake (unless you have very steady hands). Lowering the f number to say f/5 would allow the photographer to raise his or her shutter speed to around 1/60th of a second. For those that use Nikon's AF-S VR Micro-Nikkor 105mm f/2.8G IF-ED lens, the vibration reduction makes this possible. Without it, the photographer would need to lower their aperture to around f/2.8, from which only the insects eye may be in focus.
The photo on the left was taken in a shady area. The photographer wanted to keep as much of the insects head in focus as possible so he upped the aperture to f/11. In setting the correct exposure (not too dark, not too light), he found the shutter speed had to be 1/60th of a second. Normally this would be too slow for a focal length of 105mm. However, Nikon's AF-S VR Micro-Nikkor 105mm f/2.8G IF-ED lens and its vibration reduction, helped make this hand held shot possible.
Another advantage is that it comes with an excellent lens hood and pouch for storage when you're not using it.
Disadvantages of Nikon's AF-S VR Micro-Nikkor 105mm f/2.8G IF-ED lens
The only possible disadvantage that has been seen so far, is that this lens is slightly larger and heavier than other macro's we've tested. To help keep it steady, we recommend getting used to holding it with your left hand positioned under the lens. Other than that, it's the best macro lens for Nikon SLR photographers who enjoy photographing the small stuff in life.
Examples of other photographs taken with Nikon's AF-S VR Micro-Nikkor 105mm f/2.8G IF-ED macro lens
Click the thumbnails to view the larger image
The best place to buy Nikon's AF-S VR Micro-Nikkor 105mm f/2.8G IF-ED lens
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Review of Canon EF 70-300mm f/4-5.6 IS USM lens
The Canon EF 70-300mm f/4-5.6 IS USM lens was the second telephoto zoom I had purchased, after not being happy with the cheaper Canon EF 75-300mm f/4-5.6 III USM that I bought earlier. You know what they say, buy cheap, buy twice. The Canon EF 70-300mm f/4-5.6 IS USM lens is definately worth the extra $300. Having said that, the $550 USD price tag is still affordable for the average DSLR photographer, making this lens excellent value for money.
For those who are after technical details, you can find these on the Canon website: Specifications for Canon EF 70-300mm f/4-5.6 IS USM lens.
Listed below are the advantages and disadvantages, as well as example images taken with this lens, as seen through the exeriences of a fellow photography enthusiast.
Advantages of Canon EF 70-300mm f/4-5.6 IS USM lens
One of the main advantages of this lens, is obviously that it is a telephoto zoom lens. 300mm focal length is a good zoom for general photography such as close birds, landscapes, architectural buildings and zoo images. Example photographs displayed on this page demonstrate the many possible uses for a telephoto zoom lens.
Another important advantage, is that it isn't too heavy when compared to a 400mm telephoto lens. Anyone who has seen one of those huge white 400mm lens, can imagine how heavy they would be. The Canon EF 70-300 IS USM lens, is about a third of the size and weight of the 400mm, making it feasable to carry around at the zoo all day without getting too tired.
Optically, it's a very sharp lens with excellent image quality. The photograph of a boat below was hand held with a focal length of 300mm. You can click on the photo to see the sharpness of the larger image. Most photographs taken with this lens, has similar sharpness and quality.
If you like blurred backgrounds, the Canon EF 70-300mm IS USM lens has nice smooth bokeh. With the first examle below, the focal length was 300mm, while the aperture was set to f/5.6. This created a nicely blurred background behind the bird.
With the second example, you can see how this lens renders sunlight as nice circular bokeh. Again, the focal length was 300mm, while the aperture in this case was f/7.1.
The Canon EF 70-300mm f/4-5.6 IS USM lens also has two modes of Image Stabilization. One for when you hand hold your camera normally, and another for those who enjoy panning. Although it is recommended to keep your shutter speed at a faster ratio than the focal length of your lens (1/450th of a second for 300mm focal length), it is possible to keep it quite slow with image stabalization. The photograph below was hand held, with a 300mm focal length and a shutter speed of only 1/125 of a second.
Disadvantages of Canon EF 70-300mm f/4-5.6 IS USM lens
An aperture of f/4.0 isn't considered a fast lens. Therefore, it's not a good lens to use in low light conditions (an aquarium or museum for example). The more natural light the better.
Like most Canon lenses, the hood needs to be purchased separately.
If you're used to carrying around a kit lens, then this one can seem bulky at first. It is larger and heavier than an all purpose one.
Other examples of photographs taken with the Canon EF 70-300mm f/4-5.6 IS USM lens
Click the thumbnails to view the larger image
Conclusion
From someone who has tried two Canon telephoto zoom lenses, the Canon EF 70-300mm f/4-5.6 IS USM is definately good quality for the price. Personally, I've found it quite effective in getting sharp images, even when hand holding the camera. If the professional L models with the red rings are still out of your price range, then this lens is the next best thing.
The best place to buy a Canon EF 70-300mm f/4-5.6 IS USM lens
