Tamron's SP lenses are quite famous in the small but dynamic GFX adapting community. Known to punch way above their weight when it comes to sensor coverage these lenses are quite popular. Using the lens for well over a decade on three different systems (Canon EF, Panasonic LUMIX L, and GFX) I've had some mixed feelings about it. Loved it for FF, preferred the SIGMA 50 f1.4 for Mirrorless, and didn't always like the wide FOV on medium format. However, these issues are mostly subjective. An objective review of its capability reveals an "almost GF lens". Coverage is excellent, suffering only minor corner degradation and recoverable vignette at all aperture settings. A classic 35mm FOV combined with a wide f/1.8 aperture and nice rendering creates good subject separation and "3D pop". Mechanically coupled, long throw focus ring helps with precise manual focusing. AF is no slouch, and there is a nice bonus of extremely close focusing ability (for this lens class at least) HIghly recommended!
00:00 Tamron 45mm f/1.8 SP: Introduction
03:41 Coverage
04:58 An important lesson
06:20 Adapting FF lenses is a sensitive practice
07:44 Sample images
09:08 f/1.8 rendition
10:23 Fringing
11:25 Sharpness at f/4
12:15 Landscapes at f1.8
13:47 Action and motion
17:35 Distortion
19:21 Corner sharpness
21:04 Corner degradation in real life
22:59 Distortion 2.0
23:39 Slow shutter speed and IBIS
24:53 Details at f/2.2
25:26 Bokeh Quality
26:15 Direct sunlight
26:55 Frame-wide sharpness at slow aperture setting
28:01 Close focus (Macro-ish)
29:22 conclusion
