Author Topic: How 8mm Fishyes has changed! (Read 1297 times)

Em5 Pete · « **on:** October 01, 2011, 06:57:43 AM »

OLD

NEW

overflow · « **Reply #1 on:** October 01, 2011, 08:09:58 AM »

The old nikon one is almost a stop faster, and covers twice the diagonal sensor size though! Wonder how much that thing costs now days...

edit... looks like ~$2000... Also they might have about the same imaging circle, since it appears to make a full circle on a full frame camera... oops!

Em5 Pete · « **Reply #2 on:** October 01, 2011, 10:43:47 AM »

Yeah, I knew it had a larger image circle.... But, yes, a full stop would add some girth.
I was amazed how far optical formulas have come... in those days, the types of exotic glass was slimmer.

I guess it has more to do the amount of elements needed to make it back then. Today, with all kinds of exotic glass used, both real and advanced plastics (ASPH, ED etc), the lenses have gotten smaller across the board.

But, that lens hasn't shrunk much in the Ai-S version... F/2.8 is one factor. and I think that lens is a specialty lens by design.

adash · « **Reply #3 on:** October 01, 2011, 11:12:35 AM »

Basically it's not only the lens speed that defines the size. The registration (flange-back) distance matters too, for example the 7.5mm F/5.6 was twice smaller, as it protruded deep back in the mirror box:

It protrudes almost to the shutter itself, but when mounted on the camera, the whole thing becomes much smaller:

The external viewfinder is necessary because the camera's mirror is locked up.

lisandra · « **Reply #4 on:** October 01, 2011, 11:36:26 AM »

I got one for my birthday yesterday, ill post some samples soon...

adash · « **Reply #5 on:** October 01, 2011, 11:40:53 AM »

Quote from: lisandra on October 01, 2011, 11:36:26 AM

I got one for my birthday yesterday, ill post some samples soon...

You must be one very very very happy girl then!
Congrats!

Em5 Pete · « **Reply #6 on:** October 01, 2011, 11:55:52 AM »

OMG.... Don't use it on any m4/3 ;

It is a Fish-Eye Pancake

lisandra · « **Reply #7 on:** October 01, 2011, 12:03:49 PM »

Ha ha no no I didn't get THAT fisheye, I should have been clearer, I got A fisheye but not that one. I got a rokinon. Sorry bout that. I just thought is mentioned it aince you were talking 8mm fisheyes...

Em5 Pete · « **Reply #8 on:** October 01, 2011, 01:12:12 PM »

Quote from: lisandra on October 01, 2011, 12:03:49 PM

Ha ha no no I didn't get THAT fisheye, I should have been clearer, I got A fisheye but not that one. I got a rokinon. Sorry bout that. I just thought is mentioned it aince you were talking 8mm fisheyes...

too bad

lisandra · « **Reply #9 on:** October 01, 2011, 04:30:11 PM »

Best come on...the rokinon is fun!

lisandra · « **Reply #10 on:** October 01, 2011, 04:42:14 PM »

Fisheye, RAM and a butterfly cake, what else could I want!
I also woke up insane and dyed my hair black...AND I hijacked this thread...

Em5 Pete · « **Reply #11 on:** October 01, 2011, 04:58:55 PM »

I like the new you.
Enjoy the new lens.
Yummy cake
Hope you had fun !!

Sent from iPad

cosinaphile · « **Reply #12 on:** October 01, 2011, 07:06:48 PM »

lisandra the rokonon which will sell under many brand names is optically superb lens , i think its as good as the panasonic in many ways ... its on my shopping list

love the shot of cutting the cake , you look great

How 8mm Fishyes has changed!