FORUM NIKONCLUB

Conclusion
Are lenses for full-frame mirrorless cameras smaller and lighter than their DSLR equivalents?

No.

But they are for two of Sony’s eleven lenses. It really depends lens to lens, just as it always did when, in the past, we compared any camera brands of any type.

Depending on which lenses we choose, the size and weight advantage of the Sony mirrorless camera body may result in a lighter kit overall. Our sample kit had us carrying about 15% less volume in our bag with Sony mirrorless, and about 5% less weight compared to the DSLR kits. This was due to the lighter mirrorless body, compared to DSLR bodies. So, once again, the total possible gains or losses depend on which lenses we choose.

Although lens quality wasn’t compared here, we also noticed the difference in lens apertures between the brands. Nikon and Canon tend to offer faster (ie. lower F-number) lenses for similar focal length lenses, although there are a couple of exceptions. This may mean that the full-frame Nikon and Canon lenses are more desirable in terms of quality, given one possible measure of lens quality is its maximum aperture. This may also mean that some Sony lenses may be smaller and lighter because lenses with inferior maximum apertures tend to be smaller and lighter than their higher-specced cousins.

This study also highlights the cost issue. The Sony’s full-frame mirrorless lenses we compared in detail were all more expensive than their Nikon and Canon equivalents. The complete Sony kit cost about 20% more than the Canon and Nikon kits, but the Sony lenses in the kit cost about 35% more than the DSLR lenses. Of course, good deals can be had around the place, so the higher cost will not always hold true on a given day for a given product.

Finally, as always, purchasing a camera or camera system is about many factors that are personal to each of us. But our purchasing decisions can only be helped by knowing the facts, rather than the myths, about mirrorless and DSLR lenses for full-frame cameras.

Se pensavate di risparmiare soldi e peso con le mirrorless fullframe.... questi grafici forse vi creeranno alcuni dubbi


Articolo completo: https://fstoplounge.com/2015/03/is-the-full...er-and-lighter/

Allora: ho portato a tracolla anni e anni una D700 + 24-70 2.8 (Ora D610) ed un mio amico mi ha fatto provare la A7 + 24-70 Zeiss per diverso tempo.
Non ho molti dubbi: il sistema mirrorless pesa di meno, ingombra di meno. Non ci piove. Questi grafici certe volte lasciano davvero il tempo che trovano.
Ovvio che le ottiche del mirrorless full frame, nonché più piccole del sistema reflex, sono comunque pesanti, ingombranti e non "tascabili".

E poi non bisogna per forza usare le ottiche Sony. Con gli adattatori puoi usare tutte le ottiche che vuoi, e ce ne sono molte valide e leggere allo stesso tempo.