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Helder MT-1758 58mm HD 1.7x Telephoto Conversion Lens

Price: $199.95
Instant Savings: $40.00
You Pay: $159.95
Product Highlights
  • 1.7x Magnification
  • Increase Telephoto Range
  • High Definition Quality
  • 82mm Front Filter Thread

The MT-1758 58mm HD 1.7x Telephoto Conversion Lens from Helder provides 1.7x magnification to any 58mm threaded lens - for added zoom when shooting. Whether you're shooting portraits, wildlife or sports, the high definition MT-1758 zooms in on the scene and allows you to bring your subjects in closer than before. Attach the conversion lens to the 58mm filter thread on your already attached lens and start shooting. You can even attach a 82mm lens filter to the front of it, adding protection and unique effects to your images.

1.7x Telephoto
Having 1.7x magnification means your focal length will increase by a factor of approximately 1.7, which is an affordable way to get closer to those far-off subjects.
58mm Rear Lens Mount
Screw this onto the front end of your currently attached lens and the MT-1758 will transform your lens to that of a telephoto effect.
82mm Front Filter Thread
Add any 82mm size filter for increased protection, and added effects to your images.
Magnification 0.7x
Rear Mount Diameter 58mm
Front Mount Diameter 82mm
Construction, Elements/Groups Not Specified by Manufacturer
Diameter and Length 3.3 x 3.0" (8.5 x 7.7 cm)
Weight 1 lb (476 g)
Helder MT-1758 58mm HD 1.7x Telephoto Conversion Lens
  • Front and Rear Lens Caps
  • Lens Pouch
  • Lens Cleaning Cloth
  • 1-Year Warranty

    by PowerReviews
    HelderMT-1758 58mm HD 1.7x Telephoto Conversion Lens

    (based on 1 review)

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    Reviewed by 1 customer

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    Heavy and Vignettes

    By Nikon Shooter

    from Midland, Tx

    About Me Photo Enthusiast

    Verified Buyer


    • Durable
    • Easy to Use


    • Heavy bulky
    • Poor Image Quality
    • Vignette

    Best Uses

    • Video Maybe

    Comments about Helder MT-1758 58mm HD 1.7x Telephoto Conversion Lens:

    Like most people that take photographs I was hoping to extend the reach of my lens. I bought the 1.7x Telephoto Conversion kit for my 55-300mm lens to get out to 510mm without paying the cost of a 500mm lens. The first thing to understand is this thing is heavy. After screwing the conversion lens in place the autofocus slowed way down on my Nikon lens. Not only that but it also felt as if the gearing was being strained in order to extend the lens all the way out. I took a few test shots with the lens and had vignette with the lens all the way out to 510mm. The lens cover is rubber and slips over the lens and cannot be used with a lens hood on. With all the issues I did not feel I would be able to use this conversion lens and returned it. I did give it two stars because the construction of the lens appears good and this might work well on a camcorder.

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