thanks for the swift reply Andrew so more to the point when shouldn't I use a lens hood?all the time.
its when you shouldn't that is easier to list.
its an effective method of protecting the front element of the lens which is why I use mine all the time.
Hoods for zooms are a problem, because they're too small for the long end. So if the sun or other bright backlight is just outside the image you may find it useful to add extra shade with your hand, also just outside the image. Because what a good hood does is to decrease flare and increase contrast when light sources are partly behind the subject.
what would be the best conditions for using a lens hood?
I can't believe that guy in the video recommended a cheap replacement lens hood off ebay
I had a £2,000 grand lens saved from serious damage by the hood when the strap on the camera failed,
It was replaced with a new nikon hood, just in case
Yes, that was the only thing I disagreed with really. There are some decent/cheap lens hoods to be had, but many are not that great - either in fit, or flare reduction. Canon hoods are particularly good as they're lined with black flocking, but bare plastic without any matt paint, can be quite reflective. They can pick up bright side lighting and reflect it straight into the lens, actually making things worse.
Some cheap hoods are basically identical to the one from the camera manufacturer. But at a fraction of the price.
Or a clue that the built in flash is in the wrong place?Some hoods can cast a shadow if you're using the built in flash, so that's another exception to the usual rule of always using a hood.
I lot of people do this to carry it in their kit bag - a hood makes things awkward in there! Then if they don't need it (no risk of glare) they leave it in situ. I've been known to do this!Never fails to amuse (and annoy me a little, as they clearly have not RTFM), of folk wandering around London and other touristy places with reversed lens hoods on, like no one ever told them that when they took the lens out of the box, that it was like that primarily to reduce space in the box. (ok there are sometimes reasons why you might tend to do this consciously), but it is fairly clear that a lot of these people would struggle to get the camera the right way up too.
It's not just about glare, it also improves contrast by deflecting the more imperceptible and diffused light rays glancing the front element. I tested this years ago when I first started using hoods and I was surprised how much a difference it made, even on relatively dull days.I admit I never use my hoods. I do not even know where my 24-70 hood is.
There is no absolute need for a hood, its a nice bit to have and it does remove glare ( most the time ) and it can protect you lens from damage. But if you pay attention you can avoid glare or use it as part of the image and I really would not use a hood as a lens protection device.
my hood comes off when shooting through glass, so i can get the lens as close to the glass as possible, to reduce reflections in the glass. the front of my 70-200 is rubberised so you get a nice feel when close to/touching glass hth Mike
taken through the glass at whipsnade zoo
_DSC8788.jpg by Mike Rockey, on Flickr