Nokishita leaked that the Sigma 20mm F2 DG DN | Contemporary is coming to L-mount soon, but it should also be coming to E-mount like other Sigma L glass.
Sigma “20mm F2 DG DN | Contemporary” L mount version has 13 lenses in 11 groups, minimum shooting distance 22cm, maximum shooting magnification 1: 6.7, filter diameter 62mm, size φ70 × 72.4mm, weight 370g, magnet. It seems that it will be compatible with the type lens cap. Is the suggested retail price the same as the 65mm F2?
via Nokishita
The Sony a7IV has been added to DPReview’s studio scene test which you can view for yourself here. It looks like Sony’s new 33MP sensor has pretty good noise performance, but sensor performance has started to equalize in the noise department this year with almost all sensors above 24MP performing very similarly to Sony’s best 24MP sensor when scaled to similar dimensions. This isn’t a bad thing, but unless you’re shooting around base ISO you’re camera’s additional megapixels are kind of wasted.
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Sigma 100-400mm f/5-6.3 DG DN OS:
B&H Photo / Amazon / Adorama
Optical limits posted their review of the Sigma 100-400mm f/5-6.3 DG DN OS Contemporary and you can read the entire review here or read the excerpts below.
The Sigma 100-400mm f/5-6.3 DG DN OS Contemporary is a subtle improvement over the older DSLR version – both optically as well as mechanically. The image quality is primarily better at the wide end of the zoom range with a much higher sharpness in the outer image field. The high quality is maintained in the middle range. At 400mm, the center sharpness remains very good but there’s a drop in corner performance. Stopping down helps to broaden the really sharp zone. Keep in mind that the resolution has its limits because of the inevitable diffraction at f/6.3. Lateral CAs are low. Uncorrected image distortions are fairly high for a tele-zoom lens with a peak of 2% (pincushion style) at longer settings. This is, of course, not a drama with activated auto-correction. This also helps with vignetting which otherwise would be very visible at the long end as well. The quality of the bokeh is decent for a zoom lens albeit primes still rule the scene in this respect.The build quality of the Sigma lens is quite impressive for a consumer-grade lens. Plastics have been replaced by metal near the mount and there’s at least a mount-gasket providing some shielding against dust and moisture. Few will probably take advantage of this but it’s nice that Sigma provides the option of attaching a tripod mount. The AF is snappy and combined with the effective image stabilizer, it’s fun to use in the field – also because it’s relatively compact and lightweight for such a lens reaching 400mm.
The decent optical- and mechanical qualities don’t even cost a fortune either and, as so often with Sigma lenses, the 100-400mm f/5-6.3 DG DN OS Contemporary is an obvious value king. If you want higher quality, you’ll have to invest quite a bit more.
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