|Focal Length (mm)|
|Max Aperture (f)|
|Min Aperture (f)|
|Flange-Focal Distance (mm)|
Reflecta Agomar 90/2.8 [V5]
Projector lens made in Wetzlar by Docter Optics, fitted to Reflecta Diamator 2501 AF and other entry-level Diamators. Red ring. Black plastic barrel. Multicoated.
The Reflecta Agomar 90mm f2.8 is a commonly-available entry-level projector lens that suffers from extreme flare susceptibility and hot-spotting despite its multicoating. The Reflecta branding marks it out as a post-1984 model, whereas pre-1984 lenses of this specification are marked Agfa, perhaps also made by Docter, and apparently a different design to the Agomar 85mm.
Typically, projector lenses have a sweet spot of high resolution in the centre frame, deteriorating rapidly in the outer image circle. However at distance, the Agomar 90/2.8 only rises to a peak of 6.8, with Zone 3 sinking to 5.9.
It’s consistently unsharp at all distances and across the frame, rendering images with vintage glow and smeared focus transitions, with a thin-walled soap-bubble bokeh typical of a triplet in a well damped barrel. On a 35mm sensor there’s minimal swirling, with cat-eyes subtly developing predictably across an image circle that appears to be at least 55mm in diameter, allowing space for movements or coverage of a medium format sensor – where swirly bokeh would strongly feature. If there’s one thing you can say about the Reflecta Agomar’s bokeh is that there’s always something going on: not screamingly attention-grabbing, but often edgy. Colours are somewhat muted. As you might expect, the fixed circular ‘aperture’ doesn’t render specular highlights as sunstars.
Few projector lenses of this specification are noteworthy performers, and this one is no exception. In the present market, there’s no difference in price between f2.8 lenses and far more recommendable f2.4 or f2.5 versions.