This is interesting: Sigma A 105 mm f/2.8 DG DN Macro

[RobertOToole]

Couple of interesting things I just noticed about a lens, the Sigma A 105 mm f/2.8 DG DN Macro, that I have never even seen in person. (FYI, I am not working with Sigma in any way)

Has this lens been discussed here? (yes it has been!)

First, I just noticed that on Lenstip, it set a record in resolution beating the APO-Lanthar and the Zeiss Batis in center resolution at infinity

https://www.lenstip.com/595.4-Lens_revi ... ution.html

Another thing, a huge one, it smashes Sony FE 90 mm F2.8 Macro G OSS on lenstip, the Sigma edge is as sharp as the Sony center! (MTF is at infinity)

https://www.lenstip.com/561.4-Lens_revi ... ution.html

Optical formula is interesting, big different between the two!

S105: 17 elements, 12 groups one low dispersion element
S90Oss: 15 e, 11 g, 1 asph, one ED, one super ED element

Sigma's site: https://www.sigma-global.com/en/lenses/ ... /features/

The Sigma 105 A is $699 at BH (Sony 90 is over $1000). The Sigma is only in E-mount and L-mount. No stabilization in the lens, thats a huge plus in my opinion.

Looks like I would get this before the 70 Art, which is an excellent lens.

Anyone have any experience with the 105 Art lens?

Best,

[RobertOToole]

Yes, the lens has been discussed but not much info in the thread so I guess I will leave this up?

The first Sigma 105 A thread:

https://www.photomacrography.net/forum/ ... 25&t=42747

Another Sigma 105 A thread:

https://www.photomacrography.net/forum/ ... 25&t=42524

Just noticed that I was in Cedars Sinai hospital ICU when the second thread was posted, at least that explains how I missed it

[lothman]

Anyone have any experience with the 105 Art lens?

I had the FE90 and sold it for the Sigma 105. Optically the Sigma is better, but MF on the FE90 is much better to control. On the Sigma I have the feeling it takes a while until the electronic focus drive reacts when doing fine adjustmens. On my list is a comparison with the laowa 100mm 2:1 Macro. Robert you should give the Laowa lens a try I got mine used for 330€, thats a little more than a Minolta 5400 lens

[RobertOToole]

Anyone have any experience with the 105 Art lens?

I had the FE90 and sold it for the Sigma 105. Optically the Sigma is better, but MF on the FE90 is much better to control. On the Sigma I have the feeling it takes a while until the electronic focus drive reacts when doing fine adjustmens. On my list is a comparison with the laowa 100mm 2:1 Macro. Robert you should give the Laowa lens a try I got mine used for 330€, thats a little more than a Minolta 5400 lens

Thanks Lothar, that Laowa is on my list also, problem is the list keeps getting longer and longer