Lens comparison wanted

[HankScorpio]

I'd be grateful to anyone who's got the appropriate kit if they could post up a picture of the same subject using a 15mm and a 20mm lens on 1.6x crop factor sensor.

I'm not interested in content or composition (a landscape and maybe a car from about 20 feet would be useful), just want to see the difference in the field of view.

Ta.
:)

[chris.mapey]

Not got a prime lens, but I can take a shot with my 18-80 at about 20mm, if that's a help (I've got a D70)

Is that going to be any help?

Chris

[HankScorpio]

Thanks for the offer but ideally I'd like the same thing shot from the same place but with the different FLs.

I've been offered a good deal on a 15mm and I'd like to see just how much wider it is than the 20 I've got.

[anonymous-user]

HankScorpio said:

I've been offered a good deal on a 15mm and I'd like to see just how much wider it is than the 20 I've got.

About 5mm.

[GetCarter]

Seeing as no primes have appeared in 14 hours, this may help (actually probably only a little - but hey).

two pics from 5 yards (D2x) 1st 17mm - 2nd 22mm

Not a perfect extrapolation to 15 & 20 I know, but a fairly decent indication (from about 4 yards perhaps?). I'm sure someone clever like Simpo will be able to give you the numbers, but I reckon you'll get about 20% more field of view (quite a lot!)

[HankScorpio]

Thanks Steve, consider me grateful.

Although not the exact comparison, it's evident that the difference would be significant enough to justify the acquisition..!!!

[trackdemon]

I have a 12-24 Nikor so could shoot at both focal lengths for you if you want - but I think it's fair to say an ultra wide is well worth having especially with the x1.6 factor.....

[HankScorpio]

That would be cool, yes please.

I have 20mm but rather than just shell out on yet another piece of glass becuase I like shiny things, I thought I'd try and be (a little bit) objective and see if it was something I'm likely to use.

[joust]

Does this help?

www.sentechamerica.com/calculator.htm

Seems to calculate the field of vision if you give it three out of the 5 things.

J

[Bee_Jay]

Just seen the thread - I can have a quick go at it this evening with my 10-22 on a 20D if you want to.