Search for the cheap new aps-c to adapt

Started May 25, 2020 | Discussions thread
M_digicapt Senior Member • Posts: 3,090
What makes the Samyang f1.4 better?

aidaho wrote:

Tom Caldwell wrote:

walter g1 wrote:

Tom,

Neewer 85mmf1.8 is a 6/6 design.

Opteka 85mm f1.8 is a 10/7 design.

There are also cheap 85mm f1.8 lenses with a 9/7 design.

Not that I care that much but this Opteka thing has me a bit puzzled:

Looks like 6x6 in the illustration

I've looked it up, and to my eye it was very easy to classify this lens below every single 100/2.8 or 100/2.5 I've used.

Sometimes cheap 3rd party lenses can be great. This is not the case. Whatever true lens count was, it did not help.

If one really wants cheap and heavy 85, double the price and get a Samyang 85/1.4. Obviously Samyang is not twice as good as Opteka 85/1.8.

At least five times as good is more like it.

Can someone explain to people like me who know nothing about lens design why the Samyang 85mm f1.4 is 5 times better?

Thanks

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