p.1 #1 · Sigma 180/2.8 APO Macro-manual focus version!
OK , I'm sure some of the alt lens aficionados around here are familiar with the autofocus version of this lens. The Canon version won't work with the DSLR's, except at wide open, so it's popularity has waned. There are Nikon and Minolta AF versions, but those users don't let this lens go for good reason. There is also the "little brother" Sigma 180/5.6 APO macro made at the same time, which was popular in both AF and MF versions (and those can be found pretty easily even today).
After trying out a Canon version of the Sigma 180/2.8 APO Macro (wide open only) a couple years ago, I've been on the lookout for a Nikon version. First just to use on my Kodak SLR/c (with adapter), but then after getting the SLR/n I wanted one even more. I've finally found one and surprise - it is a Sigma 180/2.8 APO Macro that is fully manual focus - no AF! It was listed as a manual focus Nikon lens, but I didn't believe it because I have never seen any reference to a manual focus version of this lens ever made (excluding it's little brother). In fact, I have a 1997 Sigma catalog and lists the lens as available in Sigma, Nikon, Minolta, and Canon AF mounts.
First impressions are super. The manual focus is smooth and precise; as good as the best manual focus lenses I own - and so much better than the AF version of the same lens when used in MF mode! It's also slimmer and lighter than the AF version. Sharp from corner to corner wide open with real APO performance, beautiful color, and round /soft no ring bokeh. It's late so I'm going to bed, but I was wondering if anyone else has ever come across a MF version of the Sigma 180/2.8 APO Macro? The serial number is 10003xx, so I'm thinking not too many were made.
p.1 #2 · Sigma 180/2.8 APO Macro-manual focus version!
I'm impressed. Here's some wide open shots to test sharpness, flatness of field, LoCA, and bokeh. All are handheld at less than 1/200 so these don't show absolute sharpness.The glass cleaner on the tripod was handheld at 1/30, it was only included to show the nice bokeh from a lights reflection off of the chrome expresso maker. Yes, I had a filthy sensor
1. Great APO correction means almost no CA or LoCA
2. Sharpness across the frame from wide open
3. Flat field of focus
4. Beautiful bokeh
5. Great color and contrast from wide open
The performance comes from three large SD elememts in the front lens group. definately has a very high quality old school look.
p.1 #3 · Sigma 180/2.8 APO Macro-manual focus version!
If anyone notices a slight bend in the flat field test shots, you have a good eye. The subject was a used and rusted piece of sheet metal roofing. It has a slight bow to it.
