Canon TC-DC58C Tele Converter Lens for Canon A650IS, G7 & G9 Digital Cameras
by Canon Cameras US
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Category: Digital Camera
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Digital product summary information
Manufacturer: Canon Cameras USRelease Date: 2006-11-15
Model: 1594B001
Product features:
- Converts the focal distance of the body lens to 420mm (2.0x) - at telephoto end when attached
- Requires Converson Lens Adapter LA-DC58H to attach this lens to the PowerShot G7
Digital camera reviews of Canon TC-DC58C Tele Converter Lens for Canon A650IS, G7 & G9 Digital Cameras
Digital camera Review: Good, but a couple of things would make it a lot better.
Summary: 3 Stars
Maybe it can't be done, or maybe there isn't enough money in it, because if it could be done or if there were enough money in it, surely the Canon lens development engineers would have already done it to complement and enhance their very exceptional peerless point-and-shoot digital camera, the G9.
The Canon G9...used by photographic novices like myself who want more than only simple point-and-shoot good-but-not-great pictures, yet still want a digital camera of much better quality with more features and capabilities that takes great-not-good exceptionally high-resolution pictures, but want a camera is still relatively small and relatively light and relatively inexpensive, but aren't ready or willing to take the big step into the heavy-duty big league digital cameras used by serious professional photographers with seriously deep pockets or credit card balances) is not a good camera...it is a great camera.
The Canon TC-DC58C Teleconverter lens is a good quality accessory lens with very nice optics for the Canon G9 Digital Camera, and, yes, it does what a teleconverter lens is supposed to do - allow you to zoom even closer and take very nice high-resolution pictures when attached to the G9 of subjects and views that are far away.
The teleconverter lens attaches to the G9 via a required lens adapter. Canon offers a plastic lens adapter - the LA-DC58H, but don't buy it...it's plastic for crying out loud. Lensmate makes a much more durable aluminum Canon G9/G7 58mm lens adapter that is of MUCH better quality - [...]
So, that's all good, but there are two somewhat annoying things about this teleconverter lens:
[1] Why are there no threads on the business end of the lens to accomodate attachment of a UV filter to protect the lens? It certainly can't be a difficult thing to engineer. The absence of threads on the lens body so owners can put on a UV filter - my gosh, that has to be an inexpensive and simple beyond description thing to do - is a seriously glaring design deficiency.
[2] With the teleconverter lens attached and the G9 zoom pulled back it looks like you are looking down a black tube with the subject or view you want to get a shot of showing up as a circle in the center of the view - which, or course, you are looking down a black tube. To be fair, the reason you attach a teleconverter lens is so that you can use the zoom to get even closer to the subject or view you want to get a picture of, and the black tube effect does go away when you use the G9 zoom to get closer to what you want a shot of. And for that, the teleconverter lens works as it should and gives you really nice pictures of further way subjects and views that you can't get with the G9 alone. However, it would sure be handy and nice and appreciated if the creative and very smart Canon lens engineers would bring a teleconverter lens that would allow G9 users who have the teleconverter lens attached to have the flexibility to take full-field-of-view pictures with the zoom pulled all the way back, and then be able to use the lens for its real purpose of extending the G9's zoom for those further-away shots.
Maybe solving the looking-down-a-black-tube thing is too much to expect, maybe it is optically and physically impossible to resolve. And it that's the case, fine...if it is becomse so annoying that a G9 owner can't get past it then there is always the bigger camera - bigger bucks - bigger lens path to take.
All in all, and mainly because of these two things, this teleconverter lens is just sorta ok for an add-on lens for a "tweener" digital camera like the G9 that is easily the best of the point-and-shoot digitals but doesn't reach the level of the big-time digital SLR's.
But I am just sure there are a lot of creative and really smart engineers at Canon, and if the MBA bean-counters would let them, they could come up with a much better and more elegant solution to solve these two annoying things about their teleconverter lens and still extend the optical reach of the otherwise exceptionally excellent Canon G9 digital camera and show the MBA bean-counters at Canon that their overly conservative sales and revenue estimates for G9 teleconverter lens were way too low.
Summary of Canon TC-DC58C Tele Converter Lens for Canon A650IS, G7 & G9 Digital Cameras
Requires Conversion Lens Adapter LA-DC58H / Used to enlarge the central part of an image from an objective lensWhen you need more telephoto zoom in a smaller package, the Canon TC-DC58C teleconverter lens is an ideal choice. The TC-DC58C converts the focal distance of your body lens by a factor of 2x when attached to a Canon A650IS, G7, or G9 digital camera. Note: the converter requires the LA-DC58H lens adapter to connect with the PowerShot G7 camera.
- Magnification: 2x
- Rear mount diameter: 58mm
- Front mount diameter: None
- Construction: 3 elements in 3 groups
- Dimensions: 3.2 inches in diameter and 3.3 inches long
- Weight: 11.7 ounces
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