#Sigma 18 35 1.8 pentax how to#
#Sigma 18 35 1.8 pentax full#
#Sigma 18 35 1.8 pentax plus#

But, the K-3 has such incredibly high resolution sans any anti-aliasing that moire is certainly bound to appear with the test chart that we are using. We naturally shot with the Pentax K-3 as it's the highest resolution offering from Pentax (as of this review's publication) to wield the K-mount. Because of the premium lenses we are dealing with, we are confident you want to see 100% crops rather than scaled down versions in order to finally settle the score about image quality comparisons between these four lenses at all relevant focal lengths.Īnd finally, a small but important detail regarding our methodology. This page will be an especially long one for no other reason than there's a lot of images combined with their size. As you would expect for the contrary, the closer to the center before the converging lines are indistinguishable, the sharper the lens and the higher a resolution it is capable of attaining. Reading the charts is easy - the earlier the image blurs, the softer the lens. But when shot in a controlled manner alongside other lenses also shot in the same way, the results will speak for themselves. When observed by themselves, they do not offer much information about a lens' ability to resolve fine detail. The below 'star charts' are valuable tests because they force a lens, no matter how sharp or soft, to reach its tipping point. For example, at 18mm, the camera was set to 1,800mm, or 1.8m. Speaking of millimeters, you might be interested to know that for every focal length we shot at, the camera was placed exactly 100x the focal length away from our chart. For the comparison, of course the HD 20-40mm F2.8-4 Limited and the DA* 16-50mm F2.8 were used, and for the specific focal length, a fourth lens was added: FA 31mm F1.8 Limited. For each millimeter setting you'll find not only examinations at the center, but the extreme edge of the frame as well. In order to effectively assess the resolution capable of the lens in question, we ran it through a few of its different focal lengths from widest to longest. As such, you have arrived at our most comprehensive (and thus longest) page in this entire review. This is especially true in our pixel-peeping, megapixel-counting, measureabating world of modern photography. Many would argue that if there is just one attribute in a lens to pay overt attention to, it would be sharpness and the maximum resolution the lens in question is capable of. Sigma 18-35mm F1.8 DC HSM 'Art' Sharpness

Official Announcement of my Science Page.

Weekly Challenge Weekly Challenge # 622: Beauty in the Everyday.Caption Contest Caption contest ending august 3.Thematic Post Processing Challenge #473.Project 52 PROJECT 52-11-47-LIGHTING -Backlighting.

Theme Contest #204 - August, 2023 (People).

Monster Adapter LA-KE1 Pentax K to Sony E Lens Adapter.

Pentax K-3 III Monochrome Review Posted.

Pentax K-3 III eBook Version 1.6 Released.

The Making of 'My best friend, Buckley'.

Announcing Our August, 2023 Photo Contest.

Want a preview? Click on any page below to see an excerpt as well as extensive blog coverage, for example on Nikon or on Canon or on Pentax.

Optical quality analysis of field curvature, focus shift, sharpness, flare, distortion, and performance in the field.

#Sigma 18 35 1.8 pentax full#

Aperture series from wide open through stopped down, showing the full range of lens performance and bokeh.

Make sharper images just by understanding lens behavior you won’t read about elsewhere.

Real world examples with insights found nowhere else.

#Sigma 18 35 1.8 pentax plus#

Jaw-dropping image quality found nowhere else utilizing Retina-grade images up to full camera resolution, plus large crops.

Many examples show processing parameters for direct insight into how the image was converted.

Workflow discusses image organization, raw conversion and post processing.

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.

#Sigma 18 35 1.8 pentax how to#

Make better images by learning how to get the best results right away.

Special emphasis is placed on lens evaluation, focusing on Canon and Nikon and Sigma lenses, but with a few others like Rokinon/Samyang. Much of the focus is on Canon and Nikon but also Pentax and Pentax medium format. BEST DEAL: get full access to ALL 8 PUBLICATIONS for only 68 cents a day ($249.95)!ĭiglloyd DAP is DSLR-oriented, but also contains workflow and other topics. Subscribe now for about 16 cents a day ($60/year). Diglloyd Advanced DSLR is by yearly subscription.