Originally posted by SunnyG. Is this lens really worth 2000$+ ? All the lenses listed on eBay are going for this. Collectors item? Or is it miles ahead of the Pentax FA 135mm 2.8 and Pentax F 135mm f2.8 in performance? Or is it both? Damn this lens got my interest.
Here's my opinion:
The Samyang 135mm F2 goes for 490 EUR in PK with full guarantee and can be repaired easily. The best image quality I have seen so far in any lens on PK.
Any images I have seen of the A*135mm were
significantly softer wide open, had bad color fringing CAs and not really flare resistant. You seem to need to stop it down to F4 for real good sharpness - and why buy a F1.8 lens then?
This is also the main reason why you will have such a hard time finding many full resolution images from this lens on 24MPx or 36 MPx bodies using the lens wide open. It's a collector's item and collectors don't want to show off how bad it is actually.
So for the much
poorer image quality alone the A* would be rated at 2/3 of 490 EUR = 326 EUR.
For OEM equipment we usually pay roundabout a +30%
OEM surcharge to exact same quality items from third parties, which means 424 EUR.
For
used items loosing warranty even in mint condition and only a couple of days old you can demand roughly a -20% discount, so we are at 339 EUR.
For
really old lenses with no spare parts around any longer you can demand an additional -15% discount, so we end up at 276 EUR fair price for mint quality A*135.
The difference between 276 EUR and what sellers want is collectors' fantasy.