Hey all, just changed over the backend after 15 years I figured time to give it a bit of an update, its probably gonna be a bit weird for most of you and i am sure there is a few bugs to work out but it should kinda work the same as before... hopefully :)
The HR is the better of the two... That's all you need to know.
Basically, the HP and HR have the exact same glass.
The HR has a beefier more solid housing. The HP has a rotating, telescoping front section.
There are a few other differences... But nothing important.
The Angenieux 25-250 mm zoom lens come in 3 or 4 generations:
Gen 1. 25-250 mm T3.9 Perhaps a 1970s vintage lens or earlier. A work of wonder at that time. Arri bayonet lens mount. Used Market price today: $800-$1500. Watch for fungus and optical glue failure on doblets. The lenses are usually in very bad condition today.
Gen 2. 25-250 mm HP T3.7 Perhaps a 1980s vintage lens. An optical improvement. Arri bayonet or Arri PL lens mount. HP stands for High Performance. Used price $4000 - $6000.
Gen 3. 25-250 mm HR T3.5 Perhaps a 1990s vintage lens. Optical improvement, front barrel does not turn nor extend as you focus. PL lens mount. HR stands for High Resolution. Used Market price $15,000 - $20,000.
Gen 4. Optimo 24-290 mm. Not quite a 25-250 mm, but a vast improvement of the 25-250 mm HR industry workhorse. Came in about 5 years ago. about $ 60,000 new. Needs a handle from Duclos or Oppenheimer.
The HP unit was introduced in approx. 1986-7 in response to Cooke's dominance of the professional cine zoom market. I believe it shared aspects of its optical design with the old, traditional Angenieux 10x25B f3.2/T3.9 zoom, with the following improvements:
-Entirely new mechanical unit. Partial internal focus: Front end tracked in and out during focusing, but did not rotate. Front ring had rectangular mask a-la-Cooke. In rental service, they seemed to loosen up mechanically to an annoying degree, needed a lot of attention.
Unlike most Angenieux lenses, these focus THROUGH infinity, that is, there is no infinity stop. So you cannot do a "blind" focus pull to infinity.
-Redesigned front end, better wide angle performance. New glass types use.
-All elements coated with new Angenieux HEC (high efficiency) multi-layer anti-reflection coatings. These dramatically increase flair rejection & contrast and decrease veiling glare (image desaturation) and transmission loss. You get a higher T-stop (TRANSMISSION stop) for the same geometric aperture.
So Voila, the same f3.2 iris now delivers T3.7 instead of T3.9.
The HR is a development of the HP, with improvements mainly to its mechanics. The hybrid internal/external focus mechanism got a shroud to conceal the fact it is not true internal focus, and a clear flat to keep out debris and protect the large front element. On lenses I have compared, it appears that the HR outshines the HP in terms of wide-angle performance and format coversage (esp. at wide end). It is also a more massive unit. One of the cool things about the HP is that it is the most compact of all high performance 25-250mm zooms for 35mm format.
They are both good lenses, the HR is bigger and better and more expensive.
As with all used gear, condition is everything.