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teleconverters

Can you tell teleconverter from cropping? This test says no, you probably can’t

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Teleconverters have been a part of photography for decades. They’re a great way to effectively double the number of lenses you own by effectively turning each lens you own into two lenses. The native lens and one at double that focal length (or focal length range, in the case of zooms). But are they really worth it? And can you tell the difference between images shot with a teleconverter vs simply cropping the image?

In this video, Kevin Raposo analysed over 3,000 photos using a blur detection algorithm to see if there’s really any technical or visual difference in sharpness between cropping or using a teleconverter. And according to his tests, no, there really isn’t. Well, at least, not under all circumstances. In fact, the teleconverter shots actually proved to be a little sharper in some conditions.

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Pros and cons of teleconverters for macro photography

What are teleconverters and how do they work?

Tele-converters are handy lens add-ons that multiply the focal length of the lens they are attached to. They can be mounted in between the camera body and lens (typically a telephoto lens) and increase the focal length of the lens which they are attached to.

By how much is dependent on their power, which is stated as a factor. E.g. a 1.4x teleconverter multiplies the original focal length of a lens by 1.4. As a result a 100mm lens would turn into a 140mm lens, a 200mm lens would turn into a 280mm lens, and so on. Most common are 1.4x or 2x converters, but occasionally converters as strong as 3x can be found as well.

Why am I telling you this in a macro blog? Well, the beauty of these converters is that their power not only applies to the focal length of regular lenses, but to the magnification ratio of macro lenses just as well!

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Pros and cons of teleconverters: should you really buy them?

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Long lenses are a must for certain types of photography, but they can be a huge investment. This is why people often opt for teleconverters. This may or may not be the best option, and maybe you’re having second thoughts whether you should buy a teleconverter or not.

In his latest video, Jay P. Morgan talks about the advantages and disadvantages of teleconverters. If you can’t make up your mind whether they’re worth the investment, this video might be of great help for you.

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Tamron updates its 150-600mm f/5-6.3 lens with new design, reduced flare and faster autofocus

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Tamron have today announced the updated “G2” next generation version of its popular 150-600mm f/5-6.3 zoom lens. The new lens boasts faster autofocus and enhanced vibration control (VC) offering up to 4.5 stops of steadiness. It also has a few new features not found in its predecessor.

They say that the new iteration has been developed in response to the high resolution demands of today’s DSLRs. With resolutions hitting 50MP, one can understand why.

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G Master, a new series of wide aperture flagship lenses from Sony

Alongside the new and impressive a6300, Sony has released an entirely new series of interchangeable lenses, the G Master.

Destined to be their most premier line of glass, the new lineup will start out with 3 new E-mount lenses: a 24–70mm f/2.8, 85mm f/1.4, and 70–200mm f/2.8.[Read More…]

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