Jannard
Red Leader
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- Dec 28, 2006
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There has been FUD posted about RPP's and UO prime sets being the same
lenses, even though both companies have posted that they are different
designs.
In an effort to give both companies full credit for their respective
designs, I asked UO if we could X-ray each to clearly show the
differences once and for all.
UO gladly acknowledged the need for this and sent over an 85mm. We
sent both the UO 85mm and an 85mm RPP out for X-ray. Here are the
results.
1. There is a difference in the base lens design.
2. There are different number of elements in both lenses.
3. The mechanical design is different.
4. Each lens uses a different glass type for most of the elements.
5. The iris is in a different location on each lens.
I hope this puts the topic to rest.
Jim
lenses, even though both companies have posted that they are different
designs.
In an effort to give both companies full credit for their respective
designs, I asked UO if we could X-ray each to clearly show the
differences once and for all.
UO gladly acknowledged the need for this and sent over an 85mm. We
sent both the UO 85mm and an 85mm RPP out for X-ray. Here are the
results.
1. There is a difference in the base lens design.
2. There are different number of elements in both lenses.
3. The mechanical design is different.
4. Each lens uses a different glass type for most of the elements.
5. The iris is in a different location on each lens.
I hope this puts the topic to rest.
Jim