I love comparing things, especially when it comes to food, drink, and photography. When it comes to lenses, there are generally two types of reviews - one of mostly test charts/brick walls, and others of mostly pictures. I like to read both, but sometimes it takes the combination to paint a full picture of a lens' capabilities.
One of the most important things (to me) is how does one lens compare to another? If you only have one lens, then it doesn't really matter how many lines it resolves per mm - it is the only lens you have! So in order to build any kind of description of one lens, it needs to be compared to other lenses.
Here is where the controlled-environment tests like
Klaus' excellent photozone reviews works well. This is also where informal reviews fail - you are never going to get the exact same light, framing, etc. outside of a lab. But the reason they fail is because there is no absolute baseline - you are looking at each lens in its own vaccuum. This is why comparing lenses at the same time can make a photo-driven review work - it combines the controlled-environment results across uncontrolled environments.
I decided to match up 16 of my 'normal' (50mm-58mm focal length) lenses in a one-on-one elimination-style tournament. This way, each individual comparison is valid one against the other, but the absolute comparison across matches is irrelevant - each 'winner' will advance to another round of matches, until there is one lens left.
Here are the lenses in my new 'Normal Lens Shootout' comparison:
Pentax auto-focus: FA 50/1.4, F 50/1.7
Pentax manual focus: A 50/1.2, M 50/1.7, M 50/2
SMC Takumar (M42): SMC Tak 50/1.4, SMC Tak 55/2
Super-Multi-Coated Takumar (M42): S-M-C Tak 50/1.4, S-M-C Tak 55/1.8
Other Takumars (M42): Super-Tak 50/1.4, Auto-Tak 55/1.8
Non-Pentax manual focus lenses (all Pentax or M42 mount): Nikkor 50/1.4, Micro-Nikkor 55/3.5, Sears Auto 55/1.4, Fujinon 55/1.8, Helios 44M-4 58/2.
I ranked the above 16 lenses roughly according to use, and then placed them in a single-elimination bracket. I'll be going through the bracket in the upcoming weeks to hopefully arrive at the 'best of the best' of my collection.
I already completed the first matchup of the SMC Pentax-A 1:1.2 50mm against the KMZ Helios 44M-4 1:2 58mm - you can check out
my analysis here.
Follow the progress in my
Normal Lens Shootout gallery. ("June Madness", anyone?!) I hope you enjoy it!
--Sean