8mm Sigma Fisheye.....

[big pix]

can someone who has this lens direct me to some images please.......

and can the images be de-fished if needed.......

[MCWB]

I think petal666 has one of these, might be worth a PM.

[sirhc55]

http://www.pbase.com/cameras/sigma/8_35_ex_dg_circular_fisheye

[stubbsy]

Bernie

HERE is the DxO site link showing you supported lenses and bodies. I don't see the Sigma one there (interestingly it does seem to be supported on Canon bodies)

[big pix]

thanks ....... Peter, Chris, & MCWB.......

....... I have been poking around the DXO site....... very interesting......

[big pix]

....... after the help and advise and more information about what I am shooting, I have decided to go with the 10-20mm Sigma, as I will be processing on the go and no time to learn a new program, and working on my 12inch Powerbook. I am very tempted to purchase a new traveling companion but it will also mean taking all the software trying to do updates in a dodgy motel and who knows what else...... maybe next time if I get a bit more notice...... what I have will have to do as it has before.......

....... I am glad I brought 2 x storm covers to keep the dust out of my gear as I will be working in a very dusty environment

[jamesw]

do not bother with de-fishing shots, you willl not be happy with the end results.

[stubbsy]

do not bother with de-fishing shots, you willl not be happy with the end results.

James that's a very sweeping generalisation and as everyone knows you should never make sweeping generalisations.

More seriously I have to say that with my 10.5 Nikkor fisheye and DxO Optics Pro I have happily defished quality images. Bear in mind though that a defished image needs cropping and not every image needs to be 100% defished. Three examples (click either of the last two to see them larger):

The image below shows before and after on a shot followed by the final cropped version


Final version:


And I was pretty happy with this one too


Bottom line is that a fisheye image can be defished with acceptable results provided you are aware of it's limitations when taking the shot (eg you will never defish stuff at the extreme edges sucecssfully) and in post processing where you crop out the portions that are at the extreme edges and deal with the aberrations caused by the lens (eg strong CA at the edges). And it's worth pointing out that the two shots above also exist somewhere in 12mm variants but I couldn't get wide enough. Sometimes the fisheye is your only choice for a wide shot. Having said all of that it is certainly NOT a genaral purpose wide angle lens. That's why I have a 12-24 as well

[big pix]

stunning pix's Peter....... and thanks for you help, but I had to make a decision quickley as I am off on wednesday with a lot to do......... Might even do a pano if needs be, as my client gets his pound of flesh....... I get new toys, and there will be more early in the new year........ so maybe a fisheye then.....

[sirhc55]

Peter - well stated

[jamesw]

the de-fishes i've done (admittedly only a few) looked ridiculous in capture nx

are you saying that after your de fish, you do a further crop? that may make some sense... the center of the images I was working with looked acceptable, but the outer parts were horridly soft, CA, etc.

[stubbsy]

are you saying that after your de fish, you do a further crop? that may make some sense... the center of the images I was working with looked acceptable, but the outer parts were horridly soft, CA, etc.

That is it exactly James. if you use DxO it does it for you depending on your % defish and if you do it in NX you do it yourself. A good exampl is my first linked image above where you can see the amount of the crop by comparing the finished image to the original before defishing

[zafra52]

Thank you guys for the information I learned a few things here with your conversation

[Willy wombat]

I just got the 10.5mm and was about to post something about defishing, but I found this thread!

Thanks Stubbsy for the examples. Just what I was looking for.