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-   -   lens too fast ?? (https://www.dvinfo.net/forum/canon-eos-crop-sensor-hd/471405-lens-too-fast.html)

Bart Wierzbicki January 21st, 2010 09:04 AM

lens too fast ??
 
Hi,
I have already a 7D and I use my old nikon primes on it.
Now I will be buying another 7D and maybe with original canon lenses.

Everybody is saying the best is the 1.2, but do you film a lot on f1,2 ?
I do a lot of wedding reports and sometimes f1,4 is already too shallow.
Which lens do you suggest ?
The f1,2 is too expensive, so what do you think about the 50mm f1.8 ?
Is that a good alternative ?

Jay Rodriguez January 21st, 2010 10:26 AM

I was close to buying the Canon 50mm f1.2 but decided to settle on the 50mm f1.4 instead. I was using a friends f1.8 which was ok but the 1.4 was the one for me. The 1.2 got such bad reviews, it was a no brainer (for me).

A.J. Aguirre January 21st, 2010 10:55 AM

I would have to say, go for the 1.4, you will have over all happiness with that one, the 1.8 has its moments and the 1.4 is at a reasonable price too

Daniel Browning January 21st, 2010 07:50 PM

Quote:

Originally Posted by Bart Wierzbicki (Post 1475235)
Hi,
The f1,2 is too expensive, so what do you think about the 50mm f1.8 ?
Is that a good alternative ?

No, it's terrible. The manual focus ring is not a ring at all, but an instrument of torture sent by Canon to punish those who focus manually. The Canon 50mm f/1.4 is OK, but the Sigma 50mm f/1.4 is better still.

Manuel Hernandez-Stumpfhauser January 22nd, 2010 09:25 AM

Hello Bart, could you tell us what adaptor are you using for your nikon lenses? and how do they work on the 7D?

Thanks

Bart Wierzbicki January 22nd, 2010 05:46 PM

Hey Manuel,
I have the adapter from Cinevate (Cinevate: DSLR Rigs, Camera Sliders, Follow Focus and More).
It's kinda cheap and I think it's good value for money.

Lance Watts January 26th, 2010 04:25 PM

Get the Sigma 30mm 1.4 or even better, the Canon 24mm 1.4.

1.4 is almost a full stop faster than 1.8 and with a wider lens, your DOF won't be as shallow.

Here's a great online resource for calculating the DOF for any camera or lens combination:

Online Depth of Field Calculator

Perrone Ford January 26th, 2010 04:54 PM

Quote:

Originally Posted by Lance Watts (Post 1477625)
1.4 is almost a full stop faster than 1.8

Uhhh, what?

Lance Watts January 26th, 2010 07:17 PM

The difference between 1.8 and 1.4 is 2/3 of a stop. Do you disagree with that?

Perrone Ford January 26th, 2010 07:36 PM

Quote:

Originally Posted by Lance Watts (Post 1477683)
The difference between 1.8 and 1.4 is 2/3 of a stop. Do you disagree with that?

Ohg my goodness.... you're absolutely right... my mistake.

Lance Watts January 26th, 2010 09:57 PM

I've seen your posts around, Perrone, and I know you're a knowledgeable guy. You had me second guessing myself. :)

So, to reiterate, Bart: Get something fast and wide. And yes, there's a big difference between 1.8 and 1.4. At 1.4, 67% more light is reaching the sensor.


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