The problem with c mount lenses in that focal range is that they will vignette.

This is an interesting one. The Tamaron 2.5 28mm: Tamron 28mm 2.5 lens

180g

I have one of those too. I don't particularly consider that lightweight. Not like a Pentax 110 lens. If you are interested in lenses that big, the Pentax K Mount 50mm F1.7-F2 are definitely in that range.

Hi folks, what does everyone think of the OM100 f2.8? I'm considering buying one as it looks like a nice, small, fast tele and wondered if anyone had experience of one?

If you want a small and light 100mm the Nikon E 100 f2.8 is about the same size as the Olympus but a couple of ounces lighter and has great IQ. In fact of all the E series lenses it is considered the best. It is even liked by the E series haters. They are also much easier to find and much cheaper. I have seen NOS Nikon 100s go for what a used but good shape OM sells for. The other thing I personally don't like about the old Olympus lenses is the aperture ring being at the front of the lens body, drives me nuts because I accidentally hit it when trying to focus.

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Olympus E-PL1, E-PL2
VF2 two of them!
Oly 14-42mm, Oly 40-150mm, Oly 14-150mm, Pan 14mm, Pan 20mm, Oly 45mm, Sigma 30mm - more coming soon!
Many legacy lenses, mostly Nikkor.

The OM 2.8/100 is a great lens - actually useable 'wide' open on m4/3. I've always found the aperture at the end of the lens to be the killer feature of the OM series - funny how opinions differ.

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E-M5, E-PM1, Olympus Zuiko: 12/2, 45/1.8, OM Zuiko: 50-250/5, 135/3.5, 100/2.8, 85/2, 50/3.5, 35/2, 28/2, 24/2.8.Panasonic: 20/1.7.

It's not a particularly cheap lens because its quite new, but the Voigtlander 35mm f/2.5 pancake is very small and light just over an 30mm with the adapter and about 135g.

I use it with the 20mm f/1.7 and 14mm f/2.5 for my pancake trinity. These are the three I take with me when I don't carry a bag: camera in hand with a lens in each pocket.

If I do have a bag, I'll have the 9-18mm, 25mm, 45mm, and hopefully, some day soon the 75mm.

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--Mike Aubrey
OM-D E-M5, G2, Oly 9-18mm, Panny 14mm, 20mm, PL25mm, CV35mm f/2.5, Oly 45mm, CV58mm f/1.4, Oly 75mm, Oly 50-200mm SWD
A Photography Enthusiast
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