AlanF said:
Talys said:
I did not realize that suggesting a tripod when someone's pictures were blurry was a controversial thing... I've never said "you must use a tripod".
Apologies, I misunderstood
Talys said:
A tripod (or equivalent) is really essential at 250mm+,
to mean that you must use one.
I was inarticulate; I'm sorry.
What I should have said was: if grandpa's birding photos are coming out blurry, it's most likely because the camera's moving during the time that the shutter is open. It's really essential that this not happen if you want sharp images -- and a tripod, monopod, or something to brace the camera with/against is extremely helpful.
It's also critical to understand that as the range and level of magnification increases, very small movements become exaggerated, exacerbating blurriness. Pretend there's a string between your camera lens and the subject. If you move the camera a tiny bit and the subject is close, the string moves not nearly as much as if the subject is really far away. To take it to an extreme, if you're looking at the moon with a telescope, a tiny bump will take the whole moon out of the picture.
So to fix the problem of blurriness (assuming the issue isn't just focus), a cheap and easy solution is to make sure the camera isn't moving, or at least not moving as much as possible. This is especially true of kit lens and inexpensive consumer grade lens, which have little apertures, usually 5.6 or 6.3 at the longest focal lengths, because this forces you to shoot at a slower shutter speed, or suffer grainy photos.
It's a perfectly valid point that if birding is really your thing, investing in a good lens that lets you shoot at faster shutter speeds is worth your while. Plus, better image stabilization makes a big difference, too. But then you also get into a bit of a vicious circle of discovering, hey, your awesome new lens shoots higher IQ when it's not wide open, so instead of the f/4, you want the f/2.8... and on it goes
There's also the whole weight thing; if he's having trouble holding still a 18-55 kit lens, just about anything else is going to be worse.
I guess all I'm saying is that you don't need exotic gear to take nice pictures of birds. It doesn't hurt to learn to cope with cheap stuff, because you can get great image quality out of today's kit lenses, as long as you work within their limitations. Then, the enthusiast/pro-grade gear will open up more opportunities for the shot and to express creativity as you go on. I would recommend that over buying L, and then going, "why are my pictures still blurry after I blew a thousand bucks?", but hey, whatever makes someone happy
