Top critical review
29 people found this helpful
Mirror mirror on the wall, has a T mount fits them all
on 6 September 2012
Just received this lens but have not had time to test it yet as there is not enough light around outside.
The lens itself looks nicely made and focus is smooth (Tricky if you are not used to manual focus, but that is a feature of long focal length lenses, there is no depth of field and you will never get a really bright view finder image on a lens with a small aperture - mirror lens or otherwise).
A couple of minor niggles though - firstly, the T mount is provided but a matching end cap is not so, when removed from the camera, you need to remove the T mount as well to push on the M42 sized end cap. Not really very slick.
The mounting alignment red dot is on the face of the T mount, not the side, so you can't see it easily when trying to mount the lens.
The hex grub screws, that fix the two halves of the T mount together, were hard to get an allen key to go in to them - a normal screw would have been better. Fortunately only ever likely to need to adjust this once, to rotate the lens to a sensible position on the camera after first fitting the T mount.
Due to the depth of the T mount, there is no way you can fit the supplied filters without removing the T mount first. That said, previous experience with a mirror lens on a OM camera - I never used the supplied filters but had I wanted to they were easy to fit (this was an OM fit lens not one requiring a T mount). (Why am I not still using this old lens with an OM to 4/3 adaptor? Some Herbert nicked, it so I needed to buy this one)
Pity there is no lens hood provided (but I knew that from the product description, before I bought, so I can't complain about that).
I have now had the chance to try this lens, in daylight. The focus is so soft the images are useless. I tried a house across the valley(on a clear day) a rock in the garden and a draw handle, indoors - all taken on a solid tripod. All show the expected, very, out of focus areas in front and behind the focus point but nothing is sharp. For comparison I photographed the draw handle with a zoom lens set at 150mm taken from the same spot on the same tripod - viewing this at 200% on my computer gives as good an image as the mirror lens image viewed at 25%. If you want a rubbish photo, save your money and over enlarge a photo from a lens you already have.
I am sending this lens back in the morning, very disappointed.