Thank you. I am not familiar with the i series of Sigma lenses and simply am aware of the DG DN contemporary and art series. Can you help and maybe link to an example (not Amazon, I no longer use them for photo purchase so someone like BHPhoto who I have used to many years).I just add her my 2 cents. I did not do any scientific tests and a lot is influenced by personal preferences.
The design goal of the Panasonic Lumix F1.8 lens line was obviously a different one than for the Sigma DG DN line, especially the Sigma I-series within the DG DN line.
In my view, the main target group of the Lumix F1.8 line is videographers. All F1.8 lenses have the same size, filtersize and weight. So it is very easy to use them on a Gimbal without the need to adjust something. This is really a huge selling point as someone told me, who is doing a lot of videos. Also they seem to have almost no focus breathing during videos.
I have used the Lumix 85/1.8 and Lumix 50/1.8 only for still photography I find them both optically excellent and AF also with DFD AF of the S5 very fast and accurate. But since I am a nerd regarding size and weight of photo equipment, I always look for ways to have it even smaller and lighter.
So I was very excited when Sigma launched their i-series. Not all Sigma DG DN lenses are part of the i-series.
The lens design goal of the i-series is in my view small, compact, light, metal, aperture ring, relativel cheap compared to its image quality and very good to excellent image quality output, also with the help of firmware (all brands are doing this nowadays).
So the i-series is not only corrected optically, but also optimized to achieve results with software, which were not possible 10 years ago. I do not care. For me the results counts. If I like the image quality I do not care how they achieved it.
The Sigma Art series has a different design goal.
What I heard in different YouTube reviews is that with FL of 35mm and wider, the Sigma lenses shall be better, and with the 50 and 85 they are on par.
I am not a pixelpeeper. I find almost all Sigma DG DN lenses which I have excellent. Maybe the 45/2.8 the least among those and the 65/2.0 the best. But the Sigma 65/2.0 is a heavy beast for 65mm.
Optically I am indifferent between Lumix 85/1.8 and i.e. Sigma 90/2.8. But the Sigma is easier to pack in my Billingham Hadley Small shoulder bag. These are the criterias which decide very often how much I use a lens. Size, compactness, weight.
I also love the "old style "aperture ring on the Sigma lenses and the metal. I feel at home. Like in the 80ies with Contax, Leica, Nikon FM2 and F3HP. These good old times...
Hope that helps a little bit.
The SIGMA I series features full-frame compatible lenses that offer new value to mirrorless systems. The combination of superb optical performance with a level of compactness that is perfectly suited to smaller and lighter modern mirrorless cameras will bring you new opportunities for a perfect shot.
SIGMA is aware that in today’s world we have a wide range of camera choices, especially with the increase in mobile phone ownership. But with many photographers looking for something more than something that simply captures images when they choose to own a camera and lens, I series lenses offer the ultimate combination of superb optical performance, outstanding usability and compact form-factor.
I think that is a very important point. We are talking about a level of image quality nowadays with all brands, we would not have dreamt of 15 years ago.I’ve seen comparisons where some sigma i series are sharper than the closest Lumix equivalent. Maybe this is true but in my experience this isn’t because lumix lenses are soft, but because the sigma lenses are just extremely sharp.
Found them. There does not seem to be a strong marketing campaign for the I branding in the US, but they are available from BHPhoto and are very reasonably priced. I am going to order the f/2 35 mm and give it a try. I wanted the shallower DOF of the wider apertures but let's try this first. Thanks for the recommendation.I found something on the Sigma global website in Englisch:
The SIGMA I series features full-frame compatible lenses that offer new value to mirrorless systems. The combination of superb optical performance with a level of compactness that is perfectly suited to smaller and lighter modern mirrorless cameras will bring you new opportunities for a perfect...www.sigma-global.com
very true. There is a DPR TV review where they do a head to head comparison of some of the sigma i series to the Lumix S primes. Most of the time the sigmas had an edge particularly in the corners, and so it was fair of them to say “well the sigmas are generally a bit sharper”. From this it would be easy to jump to the conclusion that the Lumix S primes are “not sharp”. But having used them, along with sigmas i series and Art lenses, I can confirm the S primes are more than sharp enough. It turns out you can really only tell the differences in side by side close inspection.I think that is a very important point. We are talking about a level of image quality nowadays with all brands, we would not have dreamt of 15 years ago.
It turns out you can really only tell the differences in side by side close inspection.
i have both lenses, and other than more light, i cannot notice any optical superiority of the Art, even pixel-peeping
A friend of mine uses Nikon and ordered the 24-200 directly after announcement. He was extremely disappointed about the results and send the lens back after some testing. He now uses the new 24-120 and is very satisfied with the results. But he uses a Z6 and a Z7 and tested both lenses with the Z7. Maybe the Z7 sensor is too much for the 24-200?i actually found the Z24-200 rather good. I would be happy with similar size, price & quality from Lumix.
i too like my Lumix 24-105; nice, yes. Remarkable? ... not so much