Canon 1.4x Teleconverter Version 1 - Good Condition


Key Features
- Canon Extender EF 1.4x Version 1 increases the focal length of compatible Canon EF telephoto lenses by 1.4x for greater reach.
- Maintains Canon EF electronic communication for autofocus, aperture control, and EXIF data with supported lenses and camera bodies.
- Compact optical accessory ideal for wildlife, sports, aviation, and distant-subject photography without carrying a longer prime lens.
- Good-condition used item: shows normal cosmetic wear from regular use while remaining in proper working order.
- Designed for select Canon EF L-series telephoto lenses with a protruding front element interface typical of Canon extenders.
OVERVIEW
Compatible With
- Compatible with many Canon EF telephoto and super-telephoto L-series lenses designed to accept Canon extenders
- Commonly used with lenses such as the Canon EF 70-200mm f/2.8L series, EF 300mm f/2.8L series, EF 400mm f/2.8L series, EF 500mm f/4L series, and EF 600mm f/4L series
- Also works with select other Canon EF telephoto primes and zooms that are extender-compatible
- Not intended for most EF-S lenses or many standard/wide-angle EF lenses due to physical and optical compatibility limitations
Key Benefits of a 1.4x Teleconverter
The main appeal of a 1.4x teleconverter is added reach with less bulk and expense than purchasing a longer dedicated lens. A 200mm lens becomes a 280mm lens, a 300mm becomes 420mm, and a 400mm becomes 560mm. This can be especially valuable when photographing small, distant, or fast-moving subjects. Compared with cropping alone, using a teleconverter can preserve more subject detail at capture when paired with a strong base lens.Optical and Exposure Effect
Like most 1.4x teleconverters, this extender reduces the effective maximum aperture by one stop. For example, an f/2.8 lens becomes effectively f/4, and an f/4 lens becomes effectively f/5.6. This tradeoff is common and usually acceptable for photographers who prioritize reach. Image quality depends heavily on the lens used with it, and the best results are generally achieved when paired with high-performance Canon telephoto lenses, especially L-series glass.Autofocus and Camera Communication
The Canon Extender EF 1.4x Version 1 preserves electronic communication between compatible EF lenses and Canon cameras. This means autofocus operation, aperture reporting, and metadata transmission are maintained when the lens and body combination supports it. Autofocus performance can slow somewhat compared to using the lens alone because of the reduced effective aperture, but many photographers still find 1.4x extenders very practical for field use.Build and Handling
This teleconverter is compact and lightweight, making it easy to keep in a camera bag as a flexible reach option. It is much easier to carry than an additional long prime lens and can transform an existing telephoto setup in seconds. For photographers working in fast-changing environments, that convenience can be a major advantage.Who It Is Best For
This extender is best suited to photographers who already own compatible Canon EF telephoto lenses and want a cost-effective way to expand their range. Wildlife photographers can use it to frame birds and animals more tightly. Sports photographers can gain extra field coverage from the sidelines. Airshow, motorsport, and outdoor action shooters can also benefit from the additional magnification without significantly increasing kit size.Version 1 in Canon Extender History
The Version 1 Canon 1.4x extender represents an earlier generation of Canon's EF teleconverter system. It helped establish the extender as a standard tool for professional and enthusiast Canon shooters using long lenses. Later versions improved coatings, sealing, and refinements in performance, but Version 1 remains a relevant and useful option for photographers looking for a reliable, economical way to increase focal length on compatible EF glass.Comparison: 1.4x vs 2x Teleconverter
A 1.4x teleconverter is often preferred when photographers want to balance extra reach with better retained image quality and autofocus responsiveness. Compared with a 2x teleconverter, the 1.4x version typically causes less degradation in sharpness and only reduces the lens by one stop rather than two stops of light. That makes it a popular first choice for users who want more reach while preserving strong overall performance.Usage Tips
- Pair it with high-quality Canon EF telephoto lenses for the best image quality.
- Use faster shutter speeds when possible, since longer effective focal lengths amplify camera shake.
- Consider a monopod or tripod for long sessions with heavier telephoto lenses.
- Stop down slightly, when practical, to optimize edge-to-edge sharpness and contrast.
- Confirm autofocus behavior with your specific camera and lens combination before critical assignments.
Recommended Accessories
- Telephoto-compatible Canon EF L-series lens
- Protective rear and front caps for storage
- Padded lens pouch or accessory case
- Monopod or tripod for added stability
- Long-lens support such as a tripod collar-equipped lens setup
- Lens cleaning cloth and blower for keeping contacts and optics clean
Condition
This used item is rated in Good condition, meaning it shows a small amount of cosmetic wear and blemishes from regular use and is estimated to be 80-90% of its original condition. It remains in proper working order. Used lenses and accessories in this grade may show slight exterior wear, but the optical elements should remain very clean and free from marks that would materially affect performance. Used items are warrantied under the terms of the manufacturer's original warranty for 180 days from the date of purchase.
Brand

lens specification
| Dimensions | Approx. 2.7 x 1.1 in. / 68.2 x 27.2 mm |
| Mount Type | Canon EF |
| Optical Design | 5 elements in 4 groups |
| Weight | Approx. 6.6 oz / 190 g |
| Focal Length | 1.4x magnification factor |
used condition
| Used Condition |
- Canon 1.4x Teleconverter Version 1
- Front cap
- Rear cap
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Which gives better birding image quality: Canon 7D with 400mm f/5.6L, or 5D Mark II with 400mm f/5.6L and 1.4x extender?
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