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mars76 · 12-31-2014, 07:59 PM

Hi All,

I recently bought Fish Eye 17mm/F4 and i am really enjoying it.

One odd thing is when i mount it on my K-50 i need to select the focal length (as with any manual lens) and there is no 17. I am selecting 18 and shooting it.

Just wondering why there is no 17, i am pretty sure there was 35mm when i mounted on my K-50.

Thanks

**jatrax** · 12-31-2014, 08:34 PM

Not all focal lengths are in the selection. I have no idea how they picked the numbers to include. They did seem to leave out some focal lengths that were used by Pentax lenses which seems odd.

Marktax · 12-31-2014, 08:36 PM

would love to see a shot from that.

Docrwm · 12-31-2014, 09:29 PM

Congratulations, reviews on it are very positive. Enjoy your new lens.

**geomez** · 12-31-2014, 10:40 PM

Originally posted by jatrax

Not all focal lengths are in the selection. I have no idea how they picked the numbers to include. They did seem to leave out some focal lengths that were used by Pentax lenses which seems odd.

I too find this really odd.

tim60 · 01-01-2015, 12:14 AM

When confronted with that I have just chosen the nearest that seemed sensible. I doubt it is especially fussy.

I notice the K3 has a better range of values than the old K100DS. There is probably some internal resource associated with each fl they provide.

K David · 01-01-2015, 01:12 AM

I set my K-3 to 18mm when using the 17mm f4 Takumar. I figure that's close enough. My guess is that they left out the focal lengths that hadn't been used in a long time.

Marktax · 01-01-2015, 02:40 AM

Originally posted by Michaelina2

Here's one... K-5/K17/4. I used 12mm as the FL... can't remember why, but it seems to work OK.

From about the same vantage point with a K-5/F28/2.8

Other examples can be found here....

https://www.flickr.com/photos/michaelina2/sets/72157627851420528

K17/4.0 FE images are noted in the EXIF info as "K or M lens" and use 12.0 as the FL...

Cheers... M

Thanks. The lens has a nice rendition.

dakight · 01-01-2015, 07:54 AM

If you turn off Shake Reduction it won't even ask for the focal length, at least the K-50 won't.

**Michaelina2** · 01-01-2015, 08:08 AM

Originally posted by Marktax

Thanks. The lens has a nice rendition.

Agree... it's an excellent lens, but the K17's all manual operation makes it bit fiddly for my taste, so I've moved on.

Currently, my FE preference is the DA 10-17, as it offers great flexibility. At 10 it gets really fishy, then less so as it narrows to 17 where it becomes easily de-fished, plus AF, good color, small form-factor, etc... Lots of others seem to like it, too... When the look/setting calls for mostly distortion free ultra WA, the DA 12-24 (plus others) is hard to beat, as well.

Cheers... M

Docrwm · 01-01-2015, 08:11 AM

Originally posted by Michaelina2

Agree... it's an excellent lens, but the K17's all manual operation makes it bit fiddly for my taste, so I've moved on.

Currently, my FE preference is the DA 10-17, as it offers great flexibility. At 10 it gets really fishy, then less so as it narrows to 17 where it becomes easily de-fished, plus AF, good color, small form-factor, etc... Lots of others seem to like it, too... When the look/setting calls for mostly distortion free ultra WA, the DA 12-24 (plus others) is hard to beat, as well.

Cheers... M

I don't mind MF on Fisheyes because the DoF is so big. My Samyang 8mm is a breeze to use and so wide I have to be careful of where I place my feet when shooting

jimr-pdx · 01-01-2015, 09:32 AM

Since the EXIF data will match whatever you enter, and SR at wide angle isn't as vital - I go with curious numbers so I'll know when I use a particular manual lens. With a fisheye it's pretty obvious when you see the image most of the time

but it's still helpful for sorting and selecting off the computer. I use 15mm for my SMC 17 fisheye, since my 18-55 might be shot at 18 and with the fisheye the DA15 incentive is lessened. My lens is likely the same as yours optically but with the bayonet mount.

mars76 · 01-06-2015, 08:47 AM

Thanks everyone for really useful info.

Another question what's the difference between this lens (17mm/f4 vs Pentax fish eye lense 10-17mm fisheye), apart from the fact that the leter is newest model with auto focus etc.

Is there any thing that i can't do with 17mm/f4 that i can do with 10-17mm fisheye. Sorry for asking this as we are comparing manual prime lens with a auto zoom lens.

How much can i pay for 10-17mm used in decent condition?

Thanks

carpents · 01-06-2015, 09:13 AM

Originally posted by mars76

Is there any thing that i can't do with 17mm/f4 that i can do with 10-17mm fisheye.

A: Put it in your pocket.

They are really completely different lenses. The 17mm f/4 Fisheye will only appeal to those who want the manual everything experience. If you want manual focus only but auto-aperture there is always the Pentax-A 16/2.8 Fisheye.

jimr-pdx · 01-06-2015, 10:03 AM

The lowest I have seen for the 10-17 is about $350. My K17fe can focus really close, much closer than the F 17-28.. I'm not sure of min focus on 10-17 but for me that would make a difference. Fisheye closeups are very surreal

12-31-2014, 07:59 PM	#1
mars76 Junior Member Join Date: Jun 2009 Location: VA Posts: 48	Takumar FishEye 17mm/f4 Hi All, I recently bought Fish Eye 17mm/F4 and i am really enjoying it. One odd thing is when i mount it on my K-50 i need to select the focal length (as with any manual lens) and there is no 17. I am selecting 18 and shooting it. Just wondering why there is no 17, i am pretty sure there was 35mm when i mounted on my K-50. Thanks

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12-31-2014, 08:34 PM	#2
jatrax Site Supporter Join Date: May 2010 Location: Washington Cascades Photos: Gallery \| Albums Posts: 12,992	Not all focal lengths are in the selection. I have no idea how they picked the numbers to include. They did seem to leave out some focal lengths that were used by Pentax lenses which seems odd.

12-31-2014, 08:36 PM	#3
Marktax Pentaxian Join Date: Jun 2013 Location: Washington DC Photos: Albums Posts: 610	would love to see a shot from that.

12-31-2014, 09:29 PM	#4
Docrwm Veteran Member Join Date: Sep 2010 Location: Somewhere in the Southern US Photos: Gallery \| Albums Posts: 12,285	Congratulations, reviews on it are very positive. Enjoy your new lens.

12-31-2014, 10:40 PM	#5
geomez Site Supporter Join Date: Mar 2013 Location: Roanoke, Virginia, USA Photos: Gallery Posts: 1,760	Originally posted by jatrax Not all focal lengths are in the selection. I have no idea how they picked the numbers to include. They did seem to leave out some focal lengths that were used by Pentax lenses which seems odd. I too find this really odd.

01-01-2015, 12:14 AM	#6
tim60 Pentaxian Join Date: Apr 2011 Photos: Albums Posts: 8,758	When confronted with that I have just chosen the nearest that seemed sensible. I doubt it is especially fussy. I notice the K3 has a better range of values than the old K100DS. There is probably some internal resource associated with each fl they provide.

01-01-2015, 01:12 AM	#7
K David Veteran Member Join Date: Oct 2012 Location: Colorado Photos: Gallery Posts: 1,437	I set my K-3 to 18mm when using the 17mm f4 Takumar. I figure that's close enough. My guess is that they left out the focal lengths that hadn't been used in a long time.

01-01-2015, 02:40 AM	#8
Marktax Pentaxian Join Date: Jun 2013 Location: Washington DC Photos: Albums Posts: 610	Originally posted by Michaelina2 Here's one... K-5/K17/4. I used 12mm as the FL... can't remember why, but it seems to work OK. From about the same vantage point with a K-5/F28/2.8 Other examples can be found here.... https://www.flickr.com/photos/michaelina2/sets/72157627851420528 K17/4.0 FE images are noted in the EXIF info as "K or M lens" and use 12.0 as the FL... Cheers... M Thanks. The lens has a nice rendition.

01-01-2015, 07:54 AM	#9
dakight Veteran Member Join Date: Sep 2014 Location: Phoenix, AZ Photos: Albums Posts: 1,216	If you turn off Shake Reduction it won't even ask for the focal length, at least the K-50 won't.

01-01-2015, 08:08 AM	#10
Michaelina2 Site Supporter Join Date: Jan 2008 Location: SE Michigan USA Photos: Gallery Posts: 1,302	Originally posted by Marktax Thanks. The lens has a nice rendition. Agree... it's an excellent lens, but the K17's all manual operation makes it bit fiddly for my taste, so I've moved on. Currently, my FE preference is the DA 10-17, as it offers great flexibility. At 10 it gets really fishy, then less so as it narrows to 17 where it becomes easily de-fished, plus AF, good color, small form-factor, etc... Lots of others seem to like it, too... When the look/setting calls for mostly distortion free ultra WA, the DA 12-24 (plus others) is hard to beat, as well. Cheers... M

01-01-2015, 08:11 AM	#11
Docrwm Veteran Member Join Date: Sep 2010 Location: Somewhere in the Southern US Photos: Gallery \| Albums Posts: 12,285	Originally posted by Michaelina2 Agree... it's an excellent lens, but the K17's all manual operation makes it bit fiddly for my taste, so I've moved on. Currently, my FE preference is the DA 10-17, as it offers great flexibility. At 10 it gets really fishy, then less so as it narrows to 17 where it becomes easily de-fished, plus AF, good color, small form-factor, etc... Lots of others seem to like it, too... When the look/setting calls for mostly distortion free ultra WA, the DA 12-24 (plus others) is hard to beat, as well. Cheers... M I don't mind MF on Fisheyes because the DoF is so big. My Samyang 8mm is a breeze to use and so wide I have to be careful of where I place my feet when shooting

01-01-2015, 09:32 AM	#12
jimr-pdx Pentaxian Join Date: May 2010 Location: now 1 hour north of PDX Photos: Gallery \| Albums Posts: 3,897	Since the EXIF data will match whatever you enter, and SR at wide angle isn't as vital - I go with curious numbers so I'll know when I use a particular manual lens. With a fisheye it's pretty obvious when you see the image most of the time but it's still helpful for sorting and selecting off the computer. I use 15mm for my SMC 17 fisheye, since my 18-55 might be shot at 18 and with the fisheye the DA15 incentive is lessened. My lens is likely the same as yours optically but with the bayonet mount.

01-06-2015, 08:47 AM	#13
mars76 Junior Member Join Date: Jun 2009 Location: VA Posts: 48 Original Poster	Thanks everyone for really useful info. Another question what's the difference between this lens (17mm/f4 vs Pentax fish eye lense 10-17mm fisheye), apart from the fact that the leter is newest model with auto focus etc. Is there any thing that i can't do with 17mm/f4 that i can do with 10-17mm fisheye. Sorry for asking this as we are comparing manual prime lens with a auto zoom lens. How much can i pay for 10-17mm used in decent condition? Thanks

01-06-2015, 09:13 AM	#14
carpents Veteran Member Join Date: Sep 2006 Location: West Chester, PA Photos: Gallery \| Albums Posts: 1,420	Originally posted by mars76 Is there any thing that i can't do with 17mm/f4 that i can do with 10-17mm fisheye. A: Put it in your pocket. They are really completely different lenses. The 17mm f/4 Fisheye will only appeal to those who want the manual everything experience. If you want manual focus only but auto-aperture there is always the Pentax-A 16/2.8 Fisheye.

01-06-2015, 10:03 AM	#15
jimr-pdx Pentaxian Join Date: May 2010 Location: now 1 hour north of PDX Photos: Gallery \| Albums Posts: 3,897	The lowest I have seen for the 10-17 is about $350. My K17fe can focus really close, much closer than the F 17-28.. I'm not sure of min focus on 10-17 but for me that would make a difference. Fisheye closeups are very surreal

Takumar FishEye 17mm/f4

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