Sigma 745101 150 - 600 mm F5 - 6.3 DG OS HSM Contemporary Canon Mount Lens, Black

Product Information

DG: Designed for digital. But that’s not quite all there is to it. Basically it means that it works on full-frame cameras. Sigma uses DC for lenses designed specifically for cameras with APS-C sized sensors like Nikon’s DX cameras. DG lenses will work on full-frame, APS-C, and film cameras. DC lenses will only work on APS-C cropped sensors. Sigma has its DN lenses, which are for mirrorless micro4/3 cameras. But this lens will also work well on a cropped sensor cameras like Nikon’s DX range, in which case it transforms it into a staggering 225-900mm equivalent. I'm always interested when testing lenses to see how the REAL focal length of a lens compares with the advertised focal length.

Here is where the comparison gets tougher, as both lenses are much sharper at the shorter focal lengths, and both are softer at the longer focal lengths. Both are sharper when stopped down to f/8 or f/9, than wide open. In my opinion, the difference in image quality between the two is negligible. There is no clear winner here, both having areas where they are slightly better than the other. The guys at the camera club may not give you “respect” for wielding a gigantic, overweight chihuahua on the end of your camera.When shooting wildlife and sports photography, which would be the primary uses of this lens, having a very stiff zoom ring can easily cause you to miss shots. In this article I’ll be applying both of these considerations as I review Sigma’s new bundle, and make comparisons between the Sigma and Tamron lenses. All images in this article were captured with the Sigma 150-600mm with the 1.4x TC. f/5-6.3: It has a very wide zoom range, from 150mm, which is almost at portrait length, all the way up to extreme telephoto length at 600mm. But the maximum aperture depends on where in the zoom spectrum you are. At 150mm the maximum aperture is f/5. At 600mm, the maximum aperture is 6.3mm. So it’s not the fastest lens out there, but it’s in good company with other super telephotos that aren’t priced in the stratosphere.

Worse, there were times when shooting birds in Florida that I didn't bring the heavier lens with me because it was too much of a nuisance. Amazingly, Canon cameras seem to recognize this lens and have correction data available. My Canon 5DS/R and EOSR with EF Adapter both do. These are purely computed; not actually measured. These are what Sigma calls "Diffraction MTF," which includes the calculated effects of diffraction. Sigma's "Geometric MTF" are fake, cheerfully excluding the very real softening effects of diffraction. The difference between the Sigma 150-600mm f5-6.3 DG DN OS going up to 600mm versus the Tamron 150-500mm f5-6.7 Di III VC reaching “only” 500mm is visible but might not be the decisive factor for choosing a zoom lens. If the image at 500mm is sharp enough, cropping a 42MP shot at 500mm to match the angle-of-view at 600mm still nets you around 29MP. This might well be enough for the intended purpose. If you want to use teleconverters, mirrorless is the way to go. With a mirrorless camera like the Canon EOSR I have no problems using an insane combination of Canon EOSR, EF Control Ring Adapter, Extender EF 1.4x II and Extender EF 2x II, giving the equivalent of a 170-1,700mm f/12-16 lens! This crazy combo isn't the fastest at autofocus, but it still works and is easy enough to hand-hold:

Intro

It is an interface between the computer and the Sigma lens. I’ll outline the calibration procedure based on how I approached the setup. Now, How do Set It?

I think the answer to this question is a resounding “yes!”I have tried many different inexpensive superzooms over the last 5 years that I have been reviewing lenses professionally here on ImprovePhotography.com.You might want to use a tripod with teleconverters since the apertures become so slow that ISOs will have to climb to keep shutter speeds hand-holdable, which leads to softer images. Outdoors you might need ISO 3,200 to shoot at 1/1,000, for instance.