Fisheye question.

[grilledsteezeyo]

hey ns, i just got my first dslr (canon rebel xsi) and have been shooting a fair amount and would really like a fisheye to add to my gear. i was wondering which one of these two lenses that i chose would be better to have? and if not any recommendations for a relatively cheap price?

http://opteka.com/opt65.aspx

http://www.amazon.com/Rokinon-FE8M-C-Fisheye-Canon-Black/dp/B002LTXQUE

i know there aren't tons of options or great lenses at a low price but any helps appreciated

thanks!

 

[NickSki.]

Im pretty sure there there the same lense, different brand.

 

[IanAvery-Leaf]

 

[ganja_enthusiast]

yes they are basically the same lens.
Id go for the opteka because they are super reliable and i dont really know anything about the other one except for its the same lens as the opteka.
Im not sure if you know this but certain lenses work for certain cameras. The canon rebels have a 1.3mm or a 1.6mm frame im pretty sure. but to my point is for most fisheyes, they only have the "Fisheye effect" on a full frame camera. Opteka did a good job with thier Dslr fisheye and made it compatable with smaller frame cameras.

 

[eheath]

8mm would be circular in the frame on a full frame. 8mm will be very fishy on a crop sensor.

 

[ganja_enthusiast]

yes thanks for sumarizing for me this is what i was trying to explain. youll have a bunch of vig and that oesent look good in pictures.

 

[eheath]

On the crop there shouldn't be...

 

[ganja_enthusiast]

yes but then you will have just a wide angle lens it will crop out the fisheye effect.

 

[solitaryman]

It's called a rectilinear fisheye.

 

[ganja_enthusiast]

.

 

[eheath]

Not an 8mm...

 

[Ben.]

no. its a fisheye.

op. its the same lens. samyang, bower, rokinon, vivitar, all the same lens. no vig on any of them, except maybe the samyang. ive heard that one has a tiny bit.

 

[Balto]

any one have any experience with an 8mm fish on a 1.3 crop? (1dmk2?) I can never seem to find any sample shots, only on FF and 1.6x

 

[IanAvery-Leaf]

no, those are two different things

rectilinear = strait lines stay strait

fisheye = horizontal and vertical lines get more distorted the farther from the center they are

cropping a fisheye image ≠ rectilinear because the image is still distorted

 

[TWoods]

No, it won't. Both of those lenses are made for cameras with crop sensors. They are fisheye on crop sensor cameras, and on full frame cameras they will show the sides of the barrel of the lens.

the pro-optic 8mm (same lens, different name) on a crop sensor nikon:

and full frame:

As mentioned above, rectilinear means straight lines. If you are talking about putting a full frame fisheye on a crop sensor camera, you could call it a distorted wide-angle, I guess.

 

[grilledsteezeyo]

ok so, if i went with the opteka lens on my camera there wouldn't be any vignette? again my cameras a canon rebel xsi. im still kind of a noob at this so sorry for all the questions.

 

[Ben.]

shouldnt be.

 

[ganja_enthusiast]

.

 

[HeadyTopper]

sigma 10mm f2.8

 

[quaive]

if it is your first lens i wouldnt recommend a fisheye. i was thinking about getting one, then got a 70-300mm f4.5/5.6 and am pretty happy about that purchase. im not really even considering a fisheye until i get some more lenses. just my .02