Beat Takeshi
Two-Hip Shakur
I too am waiting on the Brevis35 and this is the area that I have little knowledge so thanks a million for the info.
FAQ like Info about 35mm lenses
- Thread starter TimurCivan
- Start date
Allow me to point out this forum....
http://oomz.net/mf/
This is a manual lens forum.Lots of talk of manual lenses and a gallery that shows off many lenses. Canon,Nikon,Pentax screw mount are all over there.
Of course you cant see how they perform on an adapter but you can bet if a lens is especially sharp on still photography ,then it should work well on adapters for video.
Be sure to note the F stop notations so you know which lenses perform well wide open.
http://oomz.net/mf/
This is a manual lens forum.Lots of talk of manual lenses and a gallery that shows off many lenses. Canon,Nikon,Pentax screw mount are all over there.
Of course you cant see how they perform on an adapter but you can bet if a lens is especially sharp on still photography ,then it should work well on adapters for video.
Be sure to note the F stop notations so you know which lenses perform well wide open.
ye you guys should pay attention to the part in Dougs reponse about lens breathing. The Fov changes slightly when focusing lower quality Static lenses. its not too bad, but it happens. It can be used to good effect though. Watch the Professional, with Jean Reno, Gary Oldman. THey basically only used like 5 lenses in that whole movie. Most of it looks like a 28mm Prime, just cause of the barrel distortion evident in most of the frames. but there is one scene , where thhy do an extreme rack focus, and the whole image shifts while they focus. ITs looked great, FOR THAT SHOT, butit could very well ruin yours. So be aware. Long lenses tend to do it less. Wide angle lenses do it more.
no prob BKlyn DV.
Dennis Wood
DVXuser Sponsor
Tim, thanks for throwing this together. As someone with a long history of SLR 35mm use, it's easy to take basic knowledge of these lenses for granted.
Given all the carefull examination of adapter bokeh, it's very important to note too, that different 35mm lenses have very different bokeh characteristics, and this varies with the f/stop used on the lens. One of the things that bothered me about my spinner design was the two f/stops of loss, and the inability to stop the 35mm lens down to it's sweet spot.
Ideally, we wouldn't be using our F1.4 50mm at f/1.4 ever. The extremely short DOF is very tough to manage, and the lens is certainly not at its optical best either.
Given all the carefull examination of adapter bokeh, it's very important to note too, that different 35mm lenses have very different bokeh characteristics, and this varies with the f/stop used on the lens. One of the things that bothered me about my spinner design was the two f/stops of loss, and the inability to stop the 35mm lens down to it's sweet spot.
Ideally, we wouldn't be using our F1.4 50mm at f/1.4 ever. The extremely short DOF is very tough to manage, and the lens is certainly not at its optical best either.
, i even recently made a topic asking about this so thx
Norm Sanders
Script Wrangler
So how can one tell what the "sweet spot" is on a lens, with regards to the F Stop setting?
the sweet spot, is different on every lens. But a good rule of thumb is, If the lens is a 50mm F1.4 for example, the sweet spot would be like, F 2.8 - 5.6.
But the resolution, this lens gives you is so damn high, you really dont need to worry about that for DV. If youre shooting HD, maybe, it would be a good idea to stop down to 2.8 just be sure the shrapness is really up there.
but dont worry about it too much. Guskers and i are just nit picking because we shoot on SLR cameras, where the rez drop is somewhat noticable. but seriously, its not that big of a deal.
The bokeh ( i still want to know what this stands for) charachteristics, will be very different. as will the chrachteristics of different lenses.
For example, a friend of mine who is a succesful fashion photographer, shoots on a mamiya MEdium format camera. I asked him what lenses he shoots on, Zeiss? Contax? Leica?
he said, and i am paraphrasing,
"Zeiss lenses are so sharp..... too sharp..... just ....so sharp...... ....Zeiss....... so sharp... ( he mumbled for a few more minutes )" then he said, "i liek leica cause the dof is a little deeper, and theres really no super sharp point like zeiss lenses..."
he went on to say basically, that Zeiss lenses were SUPER sharp at one point, then just lose it immediatly before and after the focal point. the lenses apparently are enginerred to be ShallowDof. Where as the Leica lenses never really get a super sharp point. but the point of focus is some what wider deeper. ( could the leica lens be the source of DVX Mojo.....? if you dont get this, dont worry... )
This is just based upon his experince, i have never used Zeiss lenses... infact i cannot afford Zeiss lenses, i would have to sell my DVX, Tripod, and car to buy one good Zeiss lens..... But you get the point, different manufactureres desighn their lense with different chrachteristics.
But the resolution, this lens gives you is so damn high, you really dont need to worry about that for DV. If youre shooting HD, maybe, it would be a good idea to stop down to 2.8 just be sure the shrapness is really up there.
but dont worry about it too much. Guskers and i are just nit picking because we shoot on SLR cameras, where the rez drop is somewhat noticable. but seriously, its not that big of a deal.
The bokeh ( i still want to know what this stands for) charachteristics, will be very different. as will the chrachteristics of different lenses.
For example, a friend of mine who is a succesful fashion photographer, shoots on a mamiya MEdium format camera. I asked him what lenses he shoots on, Zeiss? Contax? Leica?
he said, and i am paraphrasing,
"Zeiss lenses are so sharp..... too sharp..... just ....so sharp...... ....Zeiss....... so sharp... ( he mumbled for a few more minutes )" then he said, "i liek leica cause the dof is a little deeper, and theres really no super sharp point like zeiss lenses..."
he went on to say basically, that Zeiss lenses were SUPER sharp at one point, then just lose it immediatly before and after the focal point. the lenses apparently are enginerred to be ShallowDof. Where as the Leica lenses never really get a super sharp point. but the point of focus is some what wider deeper. ( could the leica lens be the source of DVX Mojo.....? if you dont get this, dont worry... )
This is just based upon his experince, i have never used Zeiss lenses... infact i cannot afford Zeiss lenses, i would have to sell my DVX, Tripod, and car to buy one good Zeiss lens..... But you get the point, different manufactureres desighn their lense with different chrachteristics.
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Norm Sanders
Script Wrangler
Ahhh. Domowatigato!
Another detail to note - your chosen aperture affects the shape of your Bokeh highlights. On the whole if a lens is wide open the bokeh highlights will be more or less circular. As the aperture closes down the shape changes - depending on how many segments (blades? there must be a techy term) the aperture is composed of - so that you end up with octagonal highlights or whatever. Other factors also affect the appearance of the bokeh - as mentioned mirror lenses have a ring bokeh with a hole in the middle because of the small mirror suspended in the centre of the lens.
bklyndv
Well-known member
Bokeh at Wikipedia. Another, uhm, illuminating article on the topic.
bklyndv
Well-known member
Oh, and let's not forget, since we're aggregating the helpful 35mm device links, the Wikipedia entry on shallow DOF adapters -- I know it's old hat to many here, but newcomers will have a lot of questions answered just giving it a quick browse.
wow alot of people are on Wikkipedia.....