FAQ like Info about 35mm lenses

Thank You so much!
You have no idea how much this helps make sense of an insane situation.
Now I finally feel headed in the right direction.
Thanks again
 
I have one question that I've been wanting to ask about lens, is it better to get a larger diametre of the front of the lens (that is the filter diametre area) say 72mm as to a 52mm? would it mean that the larger lens lets more light in incomparison to a smaller one despite the f-stop is the same?
 
The mm size of the lens determines how Wide or Telephoto the shot is going to be. If you want a wider angle shot then you would go with say a 28mm lens. If you desire a more telephoto angle (closeup) then something in likes of 135mm and up would suit you. When using a 35mm adapter it's important to keep in mind that a collection of lenses with different (mm) is ideal when shooting several different compositions requiring different focal lengths. In regards to f-stop I personally shell out money for the fastest (quality) lens I can find as all 35mm adapters lose light and pulling off certain shots requires alot more lighting. Hope this semi makes sense lol
 
deanko,
I don't think it matters. It is probably the case that larger lenses do let in more light, but I wouldn't worry about it from that perspective - go by the f stop.

BTW - DePalmo above seems to have missed that your queston was about the front element size not the optical length of the lens in mms.

- Lenny Levy
 
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Deankeo

Lenny is correct - the size of the front of the lens is not an indicator of the speed of the lens (i.e., the amount of light it lets in). For that you'll want to look at the maximum f-stop spec of the lens.

Generally speaking, for lenses of the same maximum f-stop, telephoto lenses will tend to be physically larger on the front than shorter lenses (take a look at the size of a 30mm f2.8 compared with an 85mm f2.8 - the 300 is huge!)

For 35mm adapters the front element size is really not an important factor in lens selection

Brian
 
In an earlier post it was mentioned that with Canon FD lenses, you need to perform a hack to jam the aperture lock so that you can manually control the aperture.

Was I interpreting this correctly?

Does this mean that straight out of the box, I can't control aperture on the Canon FD when connected to the SGPro?

Sorry if this a n00b question, I'm just getting into lenses and stuff, and have spend the past couple weeks doing research. Still learning xD
 
That is true - FD lenses (and FL lenses) out of the box need to have their aperture pin lodged in the "open" position. It's quite simple though.

Brian
 
I am a total Noob on the 35mm lens adaptor for the hvx200. So this question is going to sound stupid to the most of you :). But my boss was curious if it is possible to mount Pro 35 mm film lenses to any adapter for the hvx? In other words: can you use the same lenses on these adaptors as you would use on the RED one for example?

Thanks! Martin
 
Not a stupid question at all. Yes, you can mount cinema lenses (aka 'motion picture lenses' aka 'academy 35mm lenses') provided the adapter has a PL mount.

PL (for "positive lock") mount is pretty much the standard lens mount for these types of lenses, though there are other mounting options available.


Hope that helps

Brian
 
Hey Timur. Could you help me out a little?

I'm shooting a shortfilm soon and we're discussing this one perticular scene right now.

It's a dolly shot..
A "half-total" of a girl sitting and reading a magazine and to a real close-up of her eyes... (slow mo of course :P )

Anyway.. what I'm wondering is this:

What kind of lens would be best suited for this scene?

I mean... Right now I only have a 35mm Canon FD and a Nikon 50mm..

I was maybe thinking of a nikon 70-210mm f4.0 with macro.

Do I need macro to get a good close-up like that?



I can probably show you a picture of "what kind of close-up" I mean..

1228337865.jpg
 
TimurCivan said:
emmm you may be able to get away with it with the 35mm that focuses pretty close.
Click to expand...

aah.. well that picture might not have been exaclty like what I meant.. sorry bad example..

hmm.. I'm thinking a little closer than that..



"the closest my canon lens comes (see attatchment)"
 

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try the macro then. Thats all i can think of without seeing the lens for myself. the MAcro should give you what you want.
 
It was a canon fd lens actually .. that 70-210mm macro lens.. it was canon, not nikon :P


but thanks:)

I think I might try it..

I found it at ebay for 50 dollars.. worth a try!
 
hi.

28 F2.8 AI (52) FILTER RING DAMAGE 35MM SLR MANUAL FOCUS WIDE ANGLE LENS

the filter ring damage how affects the use of the lens?


what means:AI, AIS, NON AI, non mfg?
 
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So I understand what 35mm adaptors do and I understand the main concepts of your main post, but i have a few questions.

When you talk about what apertures certain lenses shoot at, what exactly do you mean? Like I understand the effects of aperture change, but if a lens has an aperture range of say F3.5 to F1.8 is this bad? I just made up numbers but what exactly does it mean to have a range of apertures to shoot on? Like, does this mean that if you are using an hvx200 and you turn it on, and the 28mm lens is on, you can only have the hvx's aperture said anywhere in the range of the 28mm's aperture? Or is that limit just a guideline stating how the lens focuses according to a specific aperture?

like in your statement:
"These lenses tend to come with very limited apetures, F2.8 is a Bright one, F3.5 is more normal. Now another problem, is that when you zoom in, the Apeture rating is lower, like in the DVX, at wide its F1.6, but at Zoom its at F2.8. This means your apeture can drop as low as F5.6 at full telephoto. Now thats not very bright, so if youre using it around dusk, or indoors it can be VERY challenging to get a good picture out of it."

could you explain what this is saying?
This is how I am trying to interpret it:
When you are at full tele using your short zoom lens you can only keep focus with the DVX's aperter is F5.6 or higher? like on a stock zoom lens for my nikon DSLR there are apertures listed ont then lens itself, and they change when I focus? what do those mean?

I just am confused about the lens aspects and their apertures when it comes to 35mm adapters.
 
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