Originally posted by WMBP Diego, where'd you get the collapsible rubber hood? and what's the point of collapsible rubber? Sounds like it would provide less protection against bumps.
Also, can you please explain what you mean by "get a longer hood" because of the FOV? If I'm buying a hood for the 50, do I have choices with respect to hood length? And what difference does the FOV make? I've never thought about the impact of "crop factor" on the lens hood.
Will
I got mine at a local store. I like it because you can collapse the hood when not in use, it pretty much wraps around the lens. It protects from bumps, but in a different way.
A hard knock on a typical lens hood may knock something loose or misalign something inside. With the rubber hood, it absorbs the impact.
Oh and rubber hoods are dirt cheap
I like it because you don't have to fumble around to reverse the hood, just pop the hood out.
Here's the text from our local store:
Have you ever lost a photo-op because you were fumbling to attach your reversed lens hood? More so, have you ever accidentally lost a lens hood because it was knocked off or not properly attached? The screw-mount rubber lens hood solves those problems.
• Rubber Collapsible Hood
• Contracts as a lens protector
• Double Filter thread
• Easy one-time installation
• Stablizer and Lens guard{/slide}
No more fumbling to unmount and mount your lens hood, or worse, lose it. The Collapsible Lens Protect Hood is designed so that you can install once and conveniently have a lens hood on-call anytime.
In addition, when the Collapsible Lens Protect Hood is contracted, it becomes a natural lens rim protector safeguarding your lens from bumps and minor shocks. Once the Collapsible Lens Protect Hood in installed, you can store your lens face down on your camera bag without the worry that your lens will collide with other lenses. In a way, the Collapsible Lens Protect Hood acts as a stabilizer or bumper for your lens when in transport.
Indeed, the Collapsible Lens Protect Hood is a smart and fast way of shooting and protecting your lens.
Features and Functions:
* Collapsible Lens hood
* Contracts as a Lens rim protector
* Space spacer and lightweight
* Easy on-time installation
* Durable plastic attachment with double front and back filter thread
* Durable rubber lens hood with lens rim protect
About the focal length, yup! The point of the hood is provide blockage protection from stray light that's outside the field of view. If it's inside the field of view (FOV) it'll cause vignetting. If it doesn't cover enough outside the FOV, it isn't as effective.
The typical 50mm and its hood are designed for FF/35mm film. But since we shoot digital 1.5x crop, our FOV is narrower. So a longer hood will cover more.
But it's probably just me being nitpicky or OC (obsessive compulsive) hehe. Any typical lens hood should be fine