single element lenses and tandem video

[Canuck 0]

OK, I'm on the verge of ordering a lens from either Royal or Way Cool, but I've just learned that I can't use the infinity setting with these lenses. Now for 4-way and freefly video, I'm not too worried, I'll just focus to about 10 feet and that will do. But what about for tandem video? If I set for say 5 feet, what does the video look like when you put the lens 6 inches in front of the passenger's nose for the money shot, or when they get away on you a little on funky exits?

Canuck

[Deuce 1]

It's much easier than it's described.

Attach the lens, set the focus to automatic and point it at something 15 feet away. Then set the focus.

Done.

The depth of focus on the Royals, which I have experience with, is such that there's no issue. You just want the focus set so you don't get instances of "hunting".

[Canuck 0]

So what you're saying is the depth of field is so good on these lenses that set at 15 feet the picture is still clear at 15 inches?

Canuck

[diablopilot 2]

Because of the limitation of the focusing element on the camera the lenses need to be focused to a different setting than infinity. The result is a focus that is effectively infinity.

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You're not as good as you think you are. Seriously.

[WayCool 0]

Quote

So what you're saying is the depth of field is so good on these lenses that set at 15 feet the picture is still clear at 15 inches?

Canuck

The 0.3 and 0.25 lenses do have a huge depth of field. 15 feet and 15 inches will definately be in focus. Although at a distance of 15 feet your tandem pair subject will be starting to get pretty small if your using a 0.3 or 0.25.

Stay Cool
http://www.waycool.com.au

[Deuce 1]

Quote

So what you're saying is the depth of field is so good on these lenses that set at 15 feet the picture is still clear at 15 inches?

Canuck

Yeah. But you have to let the camera find the focus and then lock it. Manually setting it to infinity, the sideways "8", doesn't work.

[Canuck 0]

OK the .3 and .25 have great depth of field, what about the .45? Not as good?

Canuck

[rhys 0]

i started with a single element lens and it worked o.k.
the reason i changed to a 'better' lens is i wanted to use the beach and ski setting when there is a layer of high cloud or heaps of snow on the mountains. this brings the colours of the subject out in such conditions instead of being just a silouhette.

i didn't think i had any problems with using infinity, in fact i didn't.

also single element lenses i have looked through (not mentioning names) are not as wide as they make themselves out to be. for example a .3 was narrower than my .43

if you need it to be very small then go for it but if you don't i suggest buying a kenko they are less than $100 and don't fog as much as other lenses i have seen.and are as wide as they suggest they are.

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