futurehighflyer 0 #1 February 25, 2004 Is a Fisheye the same as a Wide Angle lens? Quote Share this post Link to post Share on other sites
vdschoor 0 #2 February 25, 2004 QuoteIs a Fisheye the same as a Wide Angle lens? A fisheye is an extreme wide angle lens. Usually around 15mm. Thanks, Iwan Quote Share this post Link to post Share on other sites
AlvaroCarvalho 0 #3 February 25, 2004 Hello! Iwan...what's the relation between the description of a lens to a SLR (like 15mm, 24mm etc.) and those shown on a convertion lens (0.42, 0.3 etc)? Thanks! Hey...ho...let's go! Quote Share this post Link to post Share on other sites
ltdiver 3 #4 February 25, 2004 QuoteIs a Fisheye the same as a Wide Angle lens? A fisheye lens will give you images like this . A regular wide angle lens, that is not fisheye, will not. I know of a 12mm lens that's coming to my mailbox this next week. It is not a fisheye. ltdiver Don't tell me the sky's the limit when there are footprints on the moon Quote Share this post Link to post Share on other sites
Deuce 1 #5 February 25, 2004 The Sigma line has a 15mm Fisheye, Iwan has one of those, and a 14mm Aspherical, which I have. The difference is the distortion of the image. Fisheye shots are neat, but they get old if you are looking at lots of them. The advantage to the DigiRegel and the 10D is that with the 1.6 mag factor, they clip most of the distortion off the edges. Quote Share this post Link to post Share on other sites
genoyamamoto 0 #6 February 25, 2004 I think fisheye lenses give you a 180 degree field of view for the film size it is designed for. Wide angle lenses are just wide angle. Gotta go... plaything needs to spank me Feel the hate... Photos here Quote Share this post Link to post Share on other sites
davelepka 4 #7 February 25, 2004 A conversion lens will modify the focal length of the original lens. For example, a 50 mm focal lenght lens (SLR or Video, doesn't matter) with a .5x wide angle conversion will give you a 25 mm focal length. 50 mm X .5 wide angle = 25mm To match an SLR to a video camera you will need to know the SLR equivalent focal length of the stock video camera. This is udually in the specifications section of the camera manual. Most video cameras are around 40mm eqiuvalant when zoomed all the way back. If you had a 24 mm SLR lens, you could add a .5x conversion to your video, and come up with a slightly wider 20mm focal length on the video. If you bump the zoom up just a touch, to take out the 'corners' of the wide angle lens, your video and stills are a close match. Quote Share this post Link to post Share on other sites
vdschoor 0 #8 February 25, 2004 QuoteHello! Iwan...what's the relation between the description of a lens to a SLR (like 15mm, 24mm etc.) and those shown on a convertion lens (0.42, 0.3 etc)? Thanks! I think the explanation that is given a couple of posts above is a very good one. I use the 15mm Fisheye on the Digital Rebel in combination with my TRV17 with a Kenko .5 conversion lens and they are really compatible. I also use it in combination with my Rebel 2000 with 28mm lens, in that case my SLR is a little tighter then my video. I fix this by bumping up the zoom on my video a little bit. Thanks, Iwan Quote Share this post Link to post Share on other sites
mr2mk1g 10 #9 February 25, 2004 From my reading "fisheye" is more to do with the image distortion than with how wide the lens is. I've had a Titanium 0.38 wide angle which was not a fisheye and had virtually no distortion. My housmate has a Titanium 0.42 fisheye wide angle which had a massive goldfish bowl effect to it. There are many lenses which are "fisheye" but relativly narrow at only 0.6 or 0.7 There are also superwide angle lenses at 0.4 or less which have no fisheye effect. One term is not necessarily synonymous with the other. Quote Share this post Link to post Share on other sites
genoyamamoto 0 #10 February 25, 2004 Fisheye lenses are less fully corrected (does that make sense?) and display significant distortion for lines that do not pass through the optical center of the lens (barrel distortion). "Normal" wide angle lenses are more fully corrected for barrel distortion. Fisheye lenses typically have a 180 degree angle of view at infinity over at least some portion of the film area. In fact, I just checked B&H and can't find one that doesn't. Gotta go... plaything needs to spank me Feel the hate... Photos here Quote Share this post Link to post Share on other sites
