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Coastal Optics
60mm f/4 UV-VIS-IR APO macro

Conclusions

In terms of color correction for both lateral and longitudinal chromatic aberration, the Coastal Optics 60/4 UV-VIS-IR APO macro is a reference lens for other lenses, and uniquely capable of imagery across the UV/visible/IR spectral bands simply not possible with any other lens available today.

For peak quality corner to corner (sharpness), the Coastal 60/4 does need f/8. This is easily observed on cameras like the Nikon D800 or Sony A7R.

Value

At about $5750, the price is high, but it compares quite reasonably to Leica M lens prices, yet has far superior color correction to any Leica APO lens.

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Diglloyd DAP is DSLR-oriented, but also contains workflow and other topics. Much of the focus is on Canon and Nikon but also Pentax and Pentax medium format.

Special emphasis is placed on lens evaluation, focusing on Canon and Nikon and Sigma lenses, but with a few others like Rokinon/Samyang.

Make better images by learning how to get the best results right away.
Save money by choosing the right lens for your needs the first time, particularly some of the new Sigma Art lenses vs Nikon and Canon.
Workflow discusses image organization, raw conversion and post processing. Many examples show processing parameters for direct insight into how the image was converted.
Jaw-dropping image quality found nowhere else utilizing Retina-grade images up to full camera resolution, plus large crops [past 2 years or so].
Real world examples with insights found nowhere else. Make sharper images just by understanding lens behavior you won’t read about elsewhere.
Aperture series from wide open through stopped down, showing the full range of lens performance and bokeh.
Optical quality analysis of field curvature, focus shift, sharpness, flare, distortion, and performance in the field.

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