Mar 9, 2005, 05:52
Well at least the Tokina lens has been around for a while. AT-X is their upper-end series, but this lens is considered "pretty good for the price." It's very difficult to make a super-zoom lens that is sharp throughout the focal range. Here is the summary of the review from Pop Photo:
You're correct that it is designed for 35mm cameras, so it will work on digital SLRs with any sensor size.
The new Tamron and Sigma lenses are for APS-C size sensors only. Unfortunately it will be at least another month or two before we get some real-world shots from these new lenses.
Oh, regarding macro focus, the smaller number is better. True macro lenses have a 1:1 ratio, meaning that a 1 cm subject will fill up 1 cm of the sensor (or film frame.) This is considered "life size." Similarly, a 1:2 ratio is 1/2-life size, and a subject shot with a 1:4 lens would be 1/4th the size.
Quote:CONCLUSION: A convenient, fun lens. Interior shots, scenics, and crowd scenes will benefit from the added 4mm coverage at 24mm. While we judged sharpness to be good or better, some is sacrificed to provide the huge zooming range compared to lenses with smaller zoom ratios. Corner light falloff will probably be unnoticeable with print film.
You're correct that it is designed for 35mm cameras, so it will work on digital SLRs with any sensor size.
The new Tamron and Sigma lenses are for APS-C size sensors only. Unfortunately it will be at least another month or two before we get some real-world shots from these new lenses.
Oh, regarding macro focus, the smaller number is better. True macro lenses have a 1:1 ratio, meaning that a 1 cm subject will fill up 1 cm of the sensor (or film frame.) This is considered "life size." Similarly, a 1:2 ratio is 1/2-life size, and a subject shot with a 1:4 lens would be 1/4th the size.
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