Blog posts tagged in voigtlander
Weather has been somewhat unpredictable lately here In San Jose, so when the clouds finally cleared up on Sunday, I grabbed my bag of photo gear and finish a couple of long-delayed tests. Last week I run through a quick comparison of 50mm rangefinder lenses on Sony NEX-5n and I wanted to finish testing this setup before moving on to something new. This time around I used Sony NEX-7, but also changed focusing distance, moving closer to the MFD for all lenses - this is where I'm hoping we will see the most difference among all lenses. As in the previous section, this part of the review focuses on bokeh, DOF and color rendering, not resolution or various artifacts like vignetting. I did not use focus bracketing and did not refocus lenses when moving from one aperture to another - this would put lenses that have focus shift (i.e. Sonnar, Nokton, Jupiter...) at a disadvantage, and hence I would not recommend using the samples below for evaluating lens sharpness. In part 3 of this review I will do a bit more comprehensive test for resolution, lateral CA and vignetting. Again, no commentaries - figure out what you like on your own or wait for part 3 if you're curious to know which lens(es) I liked personally.
In the meantime, here's a summary of the shooting conditions:
- Sony NEX-7 with v1 of firmware
- WB set to Daylight (5,500K, +10 tint)
- RAW, Adobe RGB space
- ACR with default settings: Blacks +5; Brightness +50, Contrast +25
- JPEG max quality
- 1.5m focusing distance
- 2 shots per lens - max aperture, and stopped down to f/4
With Sony being quite slow in ramping up production of new E mount native lenses, and particularly the E 50mm f/1.8 OSS (I've been on a waiting list with Amazon for over 2 months now), the ever increasing community of NEX users has been actively evaluating a variety of alternative 50mm primes easily adoptable to the NEX mount. This particular comparison traces roots to fredmiranda.com's alternative gear forum, where a bunch of die-hard alternative glass users have been debating the properties of a number of Zeiss 50mm lenses on NEX cameras. I got curious in the topic and volunteered to do a quick test with a few popular, and often considered high-quality, 50s.
This section of the review will showcase bokeh rendering of 8 alternative lenses on NEX-5n. Results below are presented without much commentary - considering that tasted vary quite widely, I will let the reader decide which of the lenses have the most appealing characteristics. I will repeat this test on NEX-7 in a couple of weeks, but will use a different focusing distance, which hopefully would present the readers with a more diverse overview of the tested lenses. Finally, a third part of the review will compare more general characteristics like resolution, vignetting and lateral CA (expect very opinionated commentary in this section).
Before we jump to results, let's touch base on the test conditions:
This is Part Two of the rolling review of the 100mm macro lenses for Canon EF mount.
Studio Test. Ok folks, we are starting off with a fairly standard Imatest evaluation of our primary candidates. Just as a reminder, we will limit this test to only one focusing distance - 10m. Why 10m? For all 100mm lenses, 10m focusing distance roughly falls into medium range and closer to the infinity than to the MFD. I cannot test lenses at longer than 14m focusing distance due to the space constraints. And testing at very close focusing distances with Imatest does not really make sense due to the software's and imaging target's limitations - we will be testing the resolution of the target (printer that is) rather than the lens at anything closer than 2m (20x focal length of the lens). At 10m we get a 100x focal length ratio, which should be good enough to get us accurate results out of Imatest (as accurate as the software is capable of giving us, of course). Plus, we will do macro (MFD) and infinity tests separately, so, yea, 10m sounds like a good start.
This is Part One of the rolling review of the 100mm macro lenses for Canon EF mount.
I am not much of a macro shooter, yet I have managed to 'accumulate' 4 dedicated macro lenses for Canon mount. This happened over time - I purchased a Canon 100mm f/2.8 USM Macro long long time ago and kept it since it was a really good performer. Then I stumbled on Voigtlander APO Lanthar 125mm f/2.5 Macro in Canon mount. Back then Cosina already discontinued its SL lenses, but they were widely available, including Macro Lanthars. Price? A whopping $800 - back then I thought I was doing a mistake buying this lens for such a price, after all, Canon EF 100/2.8 cost only $450. Three years later, Macro Lanthar sells for $2,500, while Canon still costs ~$450. In hindsight, I should have bought the whole pallet of Macro Lanthars back then - this would have had a better return than my 401K over the same period. After Lanthar I purchased Leica APO Macro Elmarit 100mm f/2.8 along with the Leica R7, just to remember the old good days of the R system. R7 was gone in a week, but I kept Macro Elmarit. Finally, when Carl Zeiss released the Makro Planar 100mm f/2, I absolutely had to have it. And so lo and behold, I now have 4 macro lenses. I never really planned to keep all four, but always wanted to do a shootout. The first 100mm macro comparison went online about two years ago, but I always felt it was incomplete and so kept all lenses for that day when I get enough time to compare them more extensively side by side. This day is now...