Patent: EF 16-35 f/4L, 17-40 f/4L and Others

[wickidwombat]

i have no idea why canon suddenly hate wide aperture lenses. :'(

 

[BL]

i have no idea why canon suddenly hate wide aperture lenses. :'(

to upsell us on high ISO cameras ;D

 

[wickidwombat]

i have no idea why canon suddenly hate wide aperture lenses. :'(

They're bigger, heavier and more expensive. In the current climate, why (and how!) would you want to sell something to the consumer that is bigger, heavier and more expensive than what they already have with marginal improvement?

the only positive in this is the potential update for the 16-35 keeping f2.8
its my most used lens i shoot it wide open as much as stopped down
heres hoping it gets a makeover akin to the one the 24-70 got

 

[GMCPhotographics]

No wide angle f2 zoom lenses? Not interested Canon.

Are you being serious? Any idea how expensive or cumbersome said lens would be?

Sigma makes a 20mmf1.8 that's reasonably sized, and there's 24mmf1.4 lenses all over the place, how hard could 18mmf2 really be?
I agree though, to do a proper job the Nikkor 14-24 is probably a good example of the necessary size.
People would still love it though.

How hard can it be? Surely the fact that no one has made one yet points to how hard it is.
Wide angle zoom lenses are notoriously hard to manufacturer. The internal elements tend to be very small and need a very high level of precision compared to longer focal lengths. Plus the need to retro focus on any lens wider than 35mm due to the SLR mirror box, just adds complexity to the over all design.

 

[GMCPhotographics]

i have no idea why canon suddenly hate wide aperture lenses. :'(

They're bigger, heavier and more expensive. In the current climate, why (and how!) would you want to sell something to the consumer that is bigger, heavier and more expensive than what they already have with marginal improvement?

Some of us need the f2.8 aperture. It's not an option, I'd go fast if it was possible but currently it isn't. It's frustrating that I can go to f1.4 on a 24mm but any wider than that and the fastest I can go is f2.8. Such is life.
I can dial in a slower shutter speed to hand hold (1/15th sec vs say 1/25th on a 24mm) but the 24mm f1.4 still has several stops advantage, allowing a darker EV at the same iso value.

An IS on a wide zoom, which is f4 wouldn't really help me. I would loose another stop compared to an f2.8. At 1/15th sec, subject movement becomes a serious issue in wedding work and landscape work. Shooting at 1/8th or 1/4 second isn't going to stop leaves blowing in the breeze or a priest moving his hand.
F1.4 glass offers me a far higher shutter speed compared to f2.8, which is why it's called "fast glass" by pros.
I gain 2 stops, which is 4 times the shutter speed. I can put that towards reducing my iso value for a cleaner shot or I can put it towards my shutter speed for sharp and cleanly frozen images.

These days, there are many ultralight and mini travel pods available. Sure, you can't use them in every circumstance, but a IS unit will never do the job of a pod. It can help but not replace.

 

[wsmith96]

Question - is there any difference in a lens made for a mirrorless camera from what is available today? With all of these new patents, I'm wondering if canon is optimizing for a new mirrorless camera. It looks like Sony is undergoing that right now, so that made me wonder about all of Canon's patents.