Sigma 70-200 mm f/2,8 DG DN OS | Sports

[gusdegus]

Y-a-t-il possibilité que ce modèle soit étendu en monture réflex classique ?
Techniquement et/ou commercialement.

[Mistral75]

Commercialement douteux (Sigma arrête progressivement tous ses objectifs en montures de reflex) et techniquement impossible : même avec la monture Canon EF, la plus courte de toutes les montures de reflex, il faudrait que le plan de la monture passe par le trait rouge du schéma ci-dessous pour rattraper les 2,4 cm de différence de tirage entre monture Canon EF (44 mm) et monture Leica L (20 mm).

[gusdegus]

Merci pour ta réactivité Mistral.

[Ielle]

Bonjour,

Si cela intéresse :

Test Sigma 70-200 mm f/2,8 DG DN OS Sports : télézoom haute performance

https://phototrend.fr/2024/01/test-sigma-70-200-mm-f-28-dg-dn-os-sports/

[Mistral75]

Essai du Sigma 70-200 mm f/2,8 DG DN OS | Sports sur Sony Alpha 7R IIIA par Arkadiusz Olech (traduit par Maciej Latałło) pour LensTip.com :

Sigma S 70-200 mm f/2.8 DG DN OS review - LensTip.com

Points forts :

• très bonne qualité d'image au centre sur toute la plage de focales
• bonne qualité d'image sur les bords du format APS-C
• bonne qualité d'image sur les bords du format 24x36
• aberration chromatique longitudinale négligeable
• aberration chromatique latérale imperceptible
• astigmatisme modéré
• zones floues agréables
• excellente correction de la coma
• autofocus silencieux, rapide et précis
• vignetage léger sur capteur APS-C
• focus breathing (variation de l'angle de champ avec la mise au point) pratiquement nul
• stabilisation d'image efficace
• bon rapport qualité/prix.

Points faibles :

• distorsion en coussinet un peu trop importante
• vignettage important sur capteur 24x36.

In our summary it would be appropriate to compare the performance of the tested Sigma to Sony and Tamron models we've mentioned before. The problem is that the Sony is a completely different league when it comes to price/performance so it's better to present a duel between the Sigma and the Tamron.

The Sigma's task was very difficult. Unlike the Tamron, they didn't cut corners – with the same level of optics complexity they decided to offer a classic 70-200 mm model with a closed, completely sealed casing that doesn't change its dimensions. At the same time they offer a shorter minimum focusing distance, they keep focus breathing firmly in check, not an easy thing with a closed tube, adding different limitations when it comes to optical construction. As a result you shouldn't wonder that in the category dealing with the resolution of images the Sigma loses its duel with the Tamron.

On the other hand you have to remember that, for a slightly higher amount of money Sigma gives you a model that is, unlike the Tamron, completely weather-sealed and very solidly build; it also corrects chromatic aberration, distortion and vignetting better, its autofocus is more accurate and image stabilization- more efficient. For many potential customers such are important features that might sway them.

Apart from that, even the mere comparison between the list of pros and cons allows us to assess the Sigma very positively. It doesn't break any resolution records but the number of its flaws is low and these listed by us are easy to correct with an appropriate software.

[Mistral75]

Mise à jour en version 1.1 du logiciel embarqué du Sigma 70-200 mm f/2,8 DG DN OS | Sports en monture Leica L :

Firmware update for SIGMA 70-200mm F2.8 DG DN OS | Sports | NEWS | SIGMA Corporation

• The operational noise during video recording has been reduced.

Procédure de mise à jour et téléchargement du logiciel : 70-200mm F2.8 DG DN OS | Sports | Firmware Download for Lenses | Support | SIGMA Corporation

[Mistral75]

Mise à jour en version 02 du logiciel embarqué du Sigma 70-200 mm f/2,8 DG DN OS | Sports en monture Sony E :

Firmware update for SIGMA 70-200mm F2.8 DG DN OS | Sports | NEWS | SIGMA Corporation

• The operational noise during video recording has been reduced.
• Compatibility with continuous shooting of up to approximately 120 frames per second has been added for the focus modes (AF-S/DMF/MF) on Sony α9 III cameras.

Procédure de mise à jour et téléchargement du logiciel : 70-200mm F2.8 DG DN OS | Sports | Firmware Download for Lenses | Support | SIGMA Corporation