The Rolleiflex Rolleinar is quite the remarkable filter. I picked one up to attach to my Rolleiflex 2.8E on the recommendation of several Twitter folk and have to say, it was a crazy good purchase. The review will be short and to the point as this is a fairly straightforward lens.
Rolleinar Tech Specs
This close-up lens is designed to use with subjects closer than 40" which is the minimum distance with the the naked lens. The kit comes with a lens attachment for both the taking lens and viewing lens. The viewing lens is the thicker of the two, as it contains a prism for correcting parallax, allowing you to compose accurately at these tight ranges.
These can be picked up for Bay I, II or III and costs vary on the rarity of the setup. Bay I's and II's tend to be in the sub-$50 range while the Bay III start around $100 and can hit $200. They also come in powers of 1, 2 and 3. For this review, I am talking about the Rolleinar 1 Bay III which I picked up in mint condition for $129.
Type: Rolleinar 1 Fitting: Rolleiflex Bay III Price range (used): $100-$200 USD Effective Focal Length: 76mm Focal Distance: 18½" - 39½"
The lenses comes in a small leather case. To fit in the case, you simply need to "attach" the two lenses together by lining up the grooves and rotating into the lock position. As an aside, the lenses are stackable on the Rollei. So, if you had a Rolleinar 1 & 2, they could be used in conjunction for some extreme close up.
Using the Rolleinar
To attach the Rolleinar to the Rolleiflex, take the lenses out of the case and rotate them in opposite directions to detach. The viewing lens takes the thicker Rolleinar while the taking lens takes the thinner one. The viewing lens must end up with the red dot up top to correct the parallax, otherwise your shots will not be composed or focused properly. The taking lens does not have a top indicator.
The depth of field with this lens is pretty crazy, especially at f/2.8. It doesn't hurt to stop this one down to obtain the look you desire.
Rolleiflex with and without Rolleinar
Here are two shots from the same spot, 1st without and 2nd with the Rolleinar. Both wide open at f/2.8.