Fisheye vs UWA?

rutt

Now it's time for me to show off a small part what I don't know. In the wide angle world there seems to be a distinction between fisheyes and otherwise. I suppose it has to do how the lenses distort. My 10-22 EFS UWA distorts plenty at 10mm, but maybe not the same way as a fisheye. Please, someone who knows, fill me in. Thanks.

Andy

rutt wrote:

Now it's time for me to show off a small part what I don't know. In the wide angle world there seems to be a distinction between fisheyes and otherwise. I suppose it has to do how the lenses distort. My 10-22 EFS UWA distorts plenty at 10mm, but maybe not the same way as a fisheye. Please, someone who knows, fill me in. Thanks.

fisheye gives a circular image

10-22 and other uwa's are rectilinear, and while they distort the angles, the distortion is not circular.

sigma 8mm circular fisheye

here's an example of the sigma 15mm fisheye

but then, even with a fisheye you can do this, with a sigma 15mm fish dunno if it was de-fished (using ptlens) but some folks do great landscape work with the canon and sigma fisheyes...

howzzat?

Andy

and furthermore

i've used the canon fish - it's exceptionally sharp - and has *massive* dof... these are creative lenses, and you can have a lot of fun with them. go to pbase, search, cameras, click on sigma and then the 15mm fisheye and also canon 15mm fisheye. the sigma's just as good, and cheaper, btw. focusing on both is a bit noisier than your other lenses, and a bit slower...but you're not shooting bifs or sports with these so, who cares, right?

fun fun fun fisheye fun

canon 15mm fisheye

rutt

Thanks, Andy. I also found this which might appeal to the nerdly:

http://www.bobatkins.com/photography/technical/field_of_view.html

wxwax

At the risk of boring people by repeating shots, I used a 15mm fisheye at the auto show last weekend. It was mounted on a camera with a 1.3 crop.

I was pleasantly surprised at how wide shots came out. I guess I thought they'd be near-circular. Far from it.



I had been expecting to shove the camera close to things, and in this area I got pretty much what I expcected.




I have said that I thought the lens was a little soft. But I'm not much of a judge of that sort of thing. Looking back, I guess I'm wrong.



It is most definitely a fun lens to use. And I now realize it has many more uses than I had anticipated. I look forward to using it for landscapes and other wide shots.

BTW, I was able to get very narrow depth of field by opening wide and shoving the thing as close as I could to some flowers. So narrow was the DOF that the shots weren't any good - only a small part of the stamen was in focus.

Andy

fish food
love your examples, waxy.









here's some fish from angela johnson good stuff!

wxwax

Andy, I'm not going near you in Yosemite, and I'm never going to tell you when I'm in NYC, and just on principle I hope we never run into each other.

Here I am working out hard three times a week, sorta kinda maybe watching what I eat.... and then I see you gulleting (new word) all the deadliest and tastiest foods in the world.

It's too much and I won't stand for it. :bluduh

Andy

wxwax wrote:

Andy, I'm not going near you in Yosemite, and I'm never going to tell you when I'm in NYC, and just on principle I hope we never run into each other.

Here I am working out hard three times a week, sorta kinda maybe watching what I eat.... and then I see you gulleting (new word) all the deadliest and tastiest foods in the world.

It's too much and I won't stand for it. :bluduh

note the breakfast shot: four people at table, including the photographer... 2nd eldest son camera left, he's got *two* plates.. eggs, homefries, toast, bacon, sausage, and just for the heluvit, a double belgian waffle :uhoh and and hour later, he had lunch.... teenagers... sigh

wxwax

andy wrote:

note the breakfast shot: four people at table, including the photographer... 2nd eldest son camera left, he's got *two* plates.. eggs, homefries, toast, bacon, sausage, and just for the heluvit, a double belgian waffle :uhoh and and hour later, he had lunch.... teenagers... sigh

It's those damned waffles that did it. Now I'm thinking ihop for dinner. Thanks a million. :bluduh :bluduh :hotcake

patch29

wxwax wrote:

It's those damned waffles that did it. Now I'm thinking ihop for dinner. Thanks a million. :bluduh :bluduh :hotcake

Great, I was thinking pizza, now I am thinking Waffle House.

Andy

more fish food ....
here's the finished product from one of the shots above, this is from katz's deli in nyc :eat

canon 15mm fisheye. fisheye is great for food

wxwax

Hey, I didn't realize you had a fisheye. Just get it?

Andy

fish for portraits
n.b.

the fish will distort facial features - you may not want to use this on da laydeez....

canon 15mm fish (grain added in post)

Andy

wxwax wrote:

Hey, I didn't realize you had a fisheye. Just get it?

i had a fisheye... returned it... i'm missing it now and so i think i'm gonna get it again. monday, off to b&h, batman!

i'm adding the fish to: 135 f/2L ...

wxwax

andy wrote:

i had a fisheye... returned it... i'm missing it now and so i think i'm gonna get it again. monday, off to b&h, batman!

i'm adding the fish to: 135 f/2L ...

These are a few of my favorite things...

Andy

uwa examples
so, uwa lenses will give some serious perspective distortion, but not in the same way as the fishies... how much you get depends on how you hold the camera, the angles and lines in your shot, etc....

10mm on 10-22 ef-s lens by canon:

wxwax

A couple more fisheyes from last night, both cropped on one side.

I curse Andy for the first one.




And the desert I didn't have the stomach for, thank goodness.

Andy

wxwax wrote:

A couple more fisheyes from last night, both cropped one one side.

I curse Andy for the first one.

breakfast for dinner is one of life's grand grand pleasures

ian408

andy wrote:

breakfast for dinner is one of life's grand grand pleasures

Indeed it is.

Ian

Andy

sid, you need some more waffle with yer butter






And the desert I didn't have the stomach for, thank goodness.

[/QUOTE]

wuss. need to get you up into the big leagues. may 7th yuh-huh

patch29

wxwax wrote:

I curse Andy for the first one.

TWO WAFFLES!!!! or did you have a partner in crime?

Andy, where is the little piggy smilie?

wxwax

patch29 wrote:

TWO WAFFLES!!!! or did you have a partner in crime?

Andy, where is the little piggy smilie?

:food :food :food

ian408

patch29 wrote:

TWO WAFFLES!!!! or did you have a partner in crime?

Andy, where is the little piggy smilie?

Plus bacon and sausage.

Please also note 1 coffee cup and 1 glass OJ. I think he was by hisself

Now if I could just work out what was on the plate in the back...

Andy

oink

oink

b'doink!

Andy

another uwa shot
canon 10-22 ef-s, at 10mm

DoctorIt

This thread is more food than lens!!! I quit. You can find me over at FM with the real photographers.





:hide



No, seriously, I have a question that should definitely be answered here. What is the difference between a diagonal and circular fisheye? Sigma has both, the 8mm is circular and the 15mm is diagonal.

DoctorIt

And BTW, Andy, thanks for this photo: it really hammers the point home about UWA vs fisheye

Andy

DoctorIt wrote:

This thread is more food than lens!!! I quit. You can find me over at FM with the real photographers.





:hide



No, seriously, I have a question that should definitely be answered here. What is the difference between a diagonal and circular fisheye? Sigma has both, the 8mm is circular and the 15mm is diagonal.

circular will dramatically distort like this diagonal will not (so much)... as you see with the fish example in this thread..

here's an interesting piece you might enjoy reading.

DoctorIt

yeah, i figured that much. but andy, you're dealing with a nosey engineer: i want specifics that even bob couldn't answer, although that was right up my alley! thanks

Andy

DoctorIt wrote:

yeah, i figured that much. but andy, you're dealing with a nose-picking engineer: i want specifics that even bob couldn't answer, although that was right up my alley! thanks

fixed that for ya, doc





:hide

DoctorIt

andy wrote:

fixed that for ya, doc

same difference right?