Distortion is negligible. Things that I dislike about the lensNothing at all.Things I don't needImage stabilization for macro photography.Weather sealing.After more than 10 years of experience photographing wildlife professionally in all kinds of weahter, I think the need for weather sealing is really more of an internet myth, than a true professional feature. You can mount a 77mm filter such as a circular polarizer to the end of the filter where it is easy to reach. Also unique is that the lens hood has threads to accept a 77mm filter. Two sets (one white, one yellow) are provided. How does it compare to the Sigma 105, a much less expensive lens? You expect to get what you ordered, and you want to pay a low price for it. Opening the box and removing/opening the nice, well padded lens case reveals a very-nice-to-use sized, well-built lens. But CAs remain a big problem for lens manufacturers in ultra-wide lenses, long telephoto lenses, and extreme zooms. CAs occur because the different wavelengths of light are magnified by slightly different amounts by the lens. Second, there is the risk of a problem that results in the lens and body manufacturers pointing blame at each other. It screws into the 58mm filter threads - a relatively slow procedure. You should know that there are potential issues with third party lenses. A single Nikon SB-R200 flash and the tilt head remained in place during the test. What can also be seen in the above photo are magnification markings on the extended portion of the lens barrel. All said, the Sigma 105mm f/2.8 EX DG Macro Lens is a really sharp and well-built lens for the price - a good value. The Sigma 105 is actually one of my favorite lenses, 100% dependable, sharp and very good color correction and an excellent value from a price/performance ratio.It competes with the image quality from Canon EF 100mm f/2.8 USM L IS and the Nikon AF-S VR Micro-NIKKOR 105mm f/2.8G at a cheaper price, maybe 20% less. It is also has the lowest price. This site receives, (Using the links on this site to make any purchase provides, Sigma 105mm f/2.8 EX DG Macro Lens Review, Sigma 105mm f/2.8 EX DG OS HSM Macro Lens, Sigma 180mm f/3.5 EX DG APO HSM Macro Lens, » Sigma 150mm f/2.8 EX DG APO HSM Macro Lens Review, Adorama Deals of the Day Includes Capture One Pro 20 and a $25.00 Gift Card for Only $174.95, In Today's B&H Deal Zone: Peak Design Everyday Messenger 15" Version 1 – Half Price, Lensbaby, Vello Battery Grips, Sirui. The focus ring is pushed forward or pulled backward to disengage/engage the manual focus mechanism. It's got all these extra controls, like the barrel sliding forward, the tube w/ the macro ratio markings, separate markings and barrel positions for AF and MF, etc. Even thought they are all 1:1 macro lenses, these lenses have different minimum working distances (MWD) at their 1:1 settings. Center crop at 100% magnification view below. -All of the test result images are single frames.-To avoid focus shifts with aperture changes, 10-15 shots were made at 40 micron steps at each aperture.-The sharpest images were chosen at 100% actual pixel magnification, cropped and saved in Photoshop.-Although the sharpest aperture is shown, each lens was shot in full stops from wide open down to f/8 or f/11.-Results of the other apertures will be posted on the individual lens pages (coming soon). with identical settings for each photo (1/100, f/8, neutral contrast, AWB, mirror-lockup, 2-Second self-timer). The Sigma 105mm f/2.8 EX DG Macro Lens is - as you can discern from the name - Sigma's entry in the fixed short-telephoto focal length macro lens category. There are examples of this happening in the past. The Tamron has the shortest 1:1 working distance (3.8"/96.5mm). No surprise here since the Sigma is a much newer design, the Nikon design is 10+ year old by now and was optimized for 12 MP sensors. Aside from macro work, this lens will make a nice full-frame portrait lens and a nice mid-telephoto on a 1.6x FOVCF body. Although not a big deal, when you are using a lens that extends while working with close subjects, care must be taken to not bring the lens in contact with those subjects. Above, from left to right, are the The Sigma 105mm f/2.8 EX DG Macro Lens' focal length is slightly longer than the competing macro lenses. In the corners the Sigma 105 OS is much sharper and with much better CA supression. The retailers I recommend below are the ones I trust for my purchases. And in this case, Sigma means a true 1:1, close-up macro lens. What are Chromatic aberrations (CAs)Chromatic aberrations (CA) are one of several aberrations, or imperfections, that degrade image quality. The two that most directly compare have been mentioned above - The The prime lens offers a wide 2.8 aperture which, coupled with Sigma’s Optical Stabilizer (OS) system, makes for great handheld shots, even in low light. The lens was last updated in 2004, when it was optimised for digital camera sensors. Examples of these types of lenses would be the Printing Nikkor, Scanner Nikkor and Schneider Macro Varon. The relatively small 58mm filter threads do not rotate when extended or retracted. A relatively wide f/2.8 aperture allows action stopping / handholdable shutter speeds at lower light levels. The picture below illustrates the Sigma DF System. If macro photography is your primary use for this lens, MF is probably what you care about most and the poor AF performance may not be an issue for you. It is similar in sharpness to the Canon and a slightly better than the Tamron. All were shot within 4 minutes of each other at approximately 4:20 PM on Feb 24th - late on a very clear winter day - facing southeast. Test SetupD810 camera was mounted on a Newport PRC-3 rail carrier and Arca Swiss style quick release clamp and moved back and forth to accommodate the different focal length lenses set at 1X. I still don't like Sigma's matte finish - I find is easy to get dirty and hard to get clean. The Sigma 105 Macro's AF system is definitely not one of its strengths - AF is slow, noisy and delivered a well-above-average number of OOF (Out of Focus) shots. The Sigma has less vignetting than the Canon but is similar to the Tamron. The focus ring is pushed forward or pulled backward to disengage/engage the manual focus mechanism. Street price for a new lens is currently $569. The Sigma and Tamron macro lenses' objective elements are deeply recessed (better-protected, harder to clean) while the Canon's is not. Corner crop at 100% magnification view. I mentioned earlier that the Sigma 105 Macro is well built and I'll touch on that again. These acronyms all refer to different types of low-dispersion glass types used in the lenses. Lens mount: The lens tested here was in G-type Nikon F-mount. CA (Chromatic Aberration) is very well controlled. The new Sigma 105mm f/2.8 macro lens is in Stock for the first time in the USA via FocusCamera. All crops are from an un-moved, tripod-mounted Canon EOS-1Ds Mark II To me, Canon's USM autofocus system is easily worth the price differential alone (even including the optional lens hood). Overview. this is what Sigma calls their DF (Dual Focus) System. The Sigma 105mm F2.8 DG DN MACRO Art features 12 elements in 7 groups including one Special Low Dispersion (SLD) element … Vignetting is minimal. 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