I had compared the Nikon 10.5mm and Sigma's 4.5mm specs, and both claim to offer 180 degrees of capture. shouldnt Sigma's lens offer a broader capture (angle of view)?
I have been realising that im using the Nikon 10.5mm pretty much and would like to look into another fisheye that offers a broader angle of view. could someone recommend?
Im using a D300, and it says it has a MUP (mirror lockup function). would the older 8mm or 7.5mm nikon lenses fit? and would there be a huge difference from a 10.5mm in terms of angle of view when its only a 2-3mm difference?
thanks all....
Jul 28, 2008 at 01:15 PM
Andre Labonte Offline • • • • • • Upload & Sell: Off
The 10.5 mm fish is a standard fisheye where the 4.5mm is a circular fisheye. Go look on P-Base or do a search for the difference but it is HUGE. The old 8mm circular fisheye is designed for 35mm / FX format and will not function on a DX format camera. For that matter, it will only function properly on certain film cameras as the mirror and the back element of the lens will smack each other and destroy both.
One of these things are not like the other... as the song goes.
The Nikon 10.5mm is a "full frame" fisheye, meaning the image covers the entire frame of the photo... in this case a DX photo. Images will look like this:
The other lenses that you mention are "circular" fisheyes -- meaning the image is a plain 'ol circle and you will see a round black border around it. Like this:
Provided you get Nikon F mount versions of the 8mm, it will fit on the Nikon. However, since it's an APS-C sensor, the top and bottom of the circle will be slightly cut off... like what the above image shows. (ie: not a complete circle)
A bit more info to add to what's already been said - with the 10.5mm lens the 180 degree FOV is only accomplished diagonally, not side to side or top to bottom.
so beyond a 10.5mm rectilinear fisheye, are there any 8mm or below rectilinear fisheyes available? (that would fit a D300)? a n AI-S or Non-Ai wouldnt make a difference for me...
Jul 30, 2008 at 07:36 AM
Andre Labonte Offline • • • • • • Upload & Sell: Off
D300 wrote:
so beyond a 10.5mm rectilinear fisheye, are there any 8mm or below rectilinear fisheyes available? (that would fit a D300)? a n AI-S or Non-Ai wouldnt make a difference for me...
so am I to assume that the 10.5mm is the widest rectilinear fisheye made by nikon?
and for a circular fisheye, the nikon 6mm is the widest?(although not produced?)
for the circular fisheye, am i to say that only the 7.5 and 8mm f2.8 or f5.6 / f8 are the ones available now?
Jul 30, 2008 at 10:36 AM
Andre Labonte Offline • • • • • • Upload & Sell: Off
D300 wrote:
so am I to assume that the 10.5mm is the widest rectilinear fisheye made by nikon?
and for a circular fisheye, the nikon 6mm is the widest?(although not produced?)
for the circular fisheye, am i to say that only the 7.5 and 8mm f2.8 or f5.6 / f8 are the ones available now?
In the Nikon line-up, but the 8mm is designed for flim/FX. Sigma makes a DX circular fishey, the 4.5mm.
You have fallen in my eyes for quoting "The Nikon Boso".
i like what this lens can do for vr and very simply and effective too, especially with the mount. the article led me to that lens so why should i feel it's not good enough for D300?
D300 wrote:
so am I to assume that the 10.5mm is the widest rectilinear fisheye made by nikon?
Rectilinear and Fisheye are conflicting terms. Rectilinear means that the lens forces the corners out to maintain straight lines through a frame, therefore making it NOT fisheyed. The Tokina 12-24 is a rectilinear wide angle zoom. The Tokina 10-17 is a fisheye wide angle zoom.
So about the circular versus full frame fisheye, its just a matter of image circle and the constraints of the body itself. A 10.5m full frame fisheye on 35mm will be a circular fisheye on a larger format like 645. If it truly has a 180 degree view, the lense will project a 180 degree field of view on the larger format with a black ring around it. You could make a 185 degree 1mm fisheye, and it would have a really tiny image circle, but it probably couldn't work on an SLR since there needs to be space for the mirror to swing up. And so the camera also impacts what lenses can be made to work.
All lenses (I suppose there could be some exceptions), whether rectilinear or fisheye project a circular image. Its just that we normally design these lenses to fill the frame of a particular format in a way that you never see their true image circle.
Jul 30, 2008 at 11:41 AM
Andre Labonte Offline • • • • • • Upload & Sell: Off
louis fusco wrote:
i like what this lens can do for vr and very simply and effective too, especially with the mount. the article led me to that lens so why should i feel it's not good enough for D300?
Hi Louis,
My original reply was meant as a joke ... sorry that did not come across. I like your imput on the form.
As for "The Nikon Boso"; there are too many incosistencies on his site for me to consider him a valid sourse of information. Sure, some of the time he is on the money, but there are equally as many times that he misleads people. I never go to his site anymore and I refuse to consider any information he offers due to the purvasiveness of misinformation on his site. I am both a scientist and engineer; information integrity is important to me.
What are you trying to do, get yourself in the picture? 