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06-21-2008, 09:08 AM   #1
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FA J 18-35mm

Here's an "oldtimer" (as in memory) question.

Is the FA J 18-35mm equivelant to approx 28-50 on the istD onwards?
What lenses are fisheye on today's cameras.

Thanks

06-21-2008, 09:24 AM   #2
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QuoteOriginally posted by JCSullivan Quote
Here's an "oldtimer" (as in memory) question.

Is the FA J 18-35mm equivelant to approx 28-50 on the istD onwards?
What lenses are fisheye on today's cameras.

Thanks
At 18-35mm, I'd say it's close enough to 28-50mm (27-52mm on a 1.5 crop). I think the only FF lens that's a fisheye on the new cameras is the 8mm Peleng. IMO, the 16mm Zenitar, 17mm Takumar, and F17-28mm zoom don't have enough distortion.

The DA10-17mm lens has a LOT of distortion, especially at 10mm.
06-23-2008, 04:45 AM   #3
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Thanks Max.

QuoteQuote:
16mm Zenitar, 17mm Takumar, and F17-28mm
Are you talking film or digital?
Are ALL lenses quoted in film and we have to do the math - because that's where my brain is going blank.
06-23-2008, 04:49 AM   #4
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QuoteOriginally posted by JCSullivan Quote
Here's an "oldtimer" (as in memory) question.

Is the FA J 18-35mm equivelant to approx 28-50 on the istD onwards?
What lenses are fisheye on today's cameras.

Thanks
JC

the FA-J 18-35 was the origonal kit lens on the *istD. it is not a fish eye, and focal length alone does not define a fisheye.

A fisheye is a lens with a high degree of barrel distortion.

Foe pentax that means the 10-17mm fisheye.

the 12-24 is a rectalinear lens, meaning it makes streight lines.

There is still distortion with wide lenses, but it is converging lines from perspective, not making streight lines bent

06-23-2008, 05:35 AM   #5
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The big advantage of the FA J is that it is a full-frame lens.
06-23-2008, 06:40 AM   #6
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QuoteOriginally posted by ftpaddict Quote
The big advantage of the FA J is that it is a full-frame lens.
True, but the problem with that is losing the heavy fisheye distortion when you use it with a crop sensor.
06-23-2008, 06:55 AM   #7
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QuoteOriginally posted by maxwell1295 Quote
True, but the problem with that is losing the heavy fisheye distortion when you use it with a crop sensor.
The FA J is not a fisheye.

I tested an 18-35 on a Nikon 2020 a while back. The coverage was extremely impressive.
06-23-2008, 07:36 AM   #8
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QuoteOriginally posted by ftpaddict Quote
The big advantage of the FA J is that it is a full-frame lens.
That is true, it is a full frame and worked very well on my PZ-1

QuoteOriginally posted by maxwell1295 Quote
True, but the problem with that is losing the heavy fisheye distortion when you use it with a crop sensor.
While it is true that with any fish eye lens the distortion is most nioticable at the edges, cropping the FA-J18-35 does not remove the distortion because there was none to begin with, it is a full frame rectalinear lens.

Maybe people are confusing it with the old 17-28mm fisheye zoom

05-10-2009, 08:38 PM   #9
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Hi y'all:

I have a question: If I mount the FAJ 18-35mm zoom lens (I know there’s no aperture ring on it) on a PENTAX LX or KX 35mm film SLR body, will the aperture stay wide-open, closed down or in between by default? Has anyone tried this?
05-11-2009, 07:40 AM   #10
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QuoteOriginally posted by j0n4hpk Quote
Hi y'all:

I have a question: If I mount the FAJ 18-35mm zoom lens (I know there’s no aperture ring on it) on a PENTAX LX or KX 35mm film SLR body, will the aperture stay wide-open, closed down or in between by default? Has anyone tried this?
You'll only be able to use the lens at its lowest aperture value, making it useless for all but the brightest of conditions.
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