Why no mirror telephotos for DSLR Canon?

Started Jan 25, 2010 | Discussions thread
The_cheshirecat
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Re: Why no mirror telephotos for DSLR Canon?
In reply to Franz Weber, Jan 25, 2010

The only advantage a mirrored lens might have today is they would not be as long as their traditional counterparts.

I still have some from years gone by and they did have their place, but no longer. There are a few reasons, we are not seeing mirrored lens today.

I don’t think the sharpness offered by an inexpensive mirrored lens would exceed that of the less expensive lightweight telephotos produced today. The cost of making such a mirror lens would exceed that of the less expensive comparable lenses. Given the technology and materials used today they would be as heavy, or heavier, than what is already available.

Then there is the popularity of zoom lenses. Most primes are purchased by demanding individuals who don’t want second best. Mirror lenses cannot zoom, would be difficult to incorporate IS, and the quality simply cannot compare to these better primes.

Even if they were produced where is the market for them?

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I started in the 50's - my first picture was taken with a Leica and hooked me for life. I no longer use my Leicas, but I am still taking pictures. Some things never change.

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