You might get away with head and shoulders shots with it but it wouldn't be much use for full length body shots.
Back in days of yore 100mm was considered the optimum lens for portrait photography so that would equte to around 65mm on a crop sensor.
Don't you get quite a bit of distortion on a 35mm when your in someones face trying to get a headshot?
****Don't you get quite a bit of distortion on a 35mm when your in someones face trying to get a headshot?**** I know i do! Also, i find that another issue, being in someones face, doesn't make them comfy. 85mm+ has always worked best for me. But i do admit to using my 50mm on a cropped and really enjoying it.
As said, depends on portrait and distance... but I would say 85mm is a perfect portrait, or maybe a 50mm.
Quick question: a 35mm prime on a cropped sensor camera (D3100) should act like a 52.5mm lens right?
and does that make it ok for portraiture?
only if you have enough room for the shot you want to take. there is no specific lens for taking portraits

This^only if you have enough room for the shot you want to take. there is no specific lens for taking portraits
...very true! infact the majority of my work is shot on a 12-24 UWA![]()
if you want the specific effect then yes you would use a wide or ultrawide lens
Tizer said:****Don't you get quite a bit of distortion on a 35mm when your in someones face trying to get a headshot?**** I know i do! Also, i find that another issue, being in someones face, doesn't make them comfy. 85mm+ has always worked best for me. But i do admit to using my 50mm on a cropped and really enjoying it.
Nope!
To the OP: Wide lenses are much better for environmental portraiture and showing your subject in context. Longer lenses have less distortion but tend to be used to show just the subject and rarely show the context that the subject is in i.e professional surroundings, living conditions etc. Basically it depends what you are shooting. Fashion, commercial headshots etc are going to be a long lens whereas documentary work tends to be shot on wide lenses.![]()
Thanks
Quick question. Am I right in thinking a 35mm = 52.5mm on a cropped sensor? (D3100)
This is the reason I bought it. My understanding was a 50mm lens gives the most accurate presentation of things as they appear in real life making this a good all rounder prime lens.
This might help
http://photographylife.com/dx-or-fx-for-sports-and-wildlife-photography
Basically this taken from the above link:
"1) The Myth of the DX Built-in 1.5x Teleconverter
A lot of people seem to be very confused about the effect of a crop sensor on the focal length of a lens. Stating that a crop sensor increases the focal length of the lens or acts as a teleconverter is completely wrong, since focal length is an optical attribute of a lens and has nothing to do with the camera. I talked about this in detail in my Equivalent Focal Length article that I published a while ago. Simply put, a DX sensor can never change the optical parameters of a lens, so if you are shooting with a 300mm lens, it stays as a 300mm lens no matter what camera you mount it on. The confusion of equivalent focal length comes from manufacturers that initially wanted to make people understand that the field of view on a cropped sensor camera is tighter than 35mm, because the image corners get chopped off. The word equivalent is only relative to 35mm film. So you cannot say that your 300mm lens becomes a 450mm lens on a DX body. It does not and never will. All you are doing, is you are taking an image from a 300mm lens, cropping it in the center area and magnifying that center with increased resolution."
I have only posted the link above to give an explanation of what you get from lenses when you mount them on a cropped sensor camera.
IMO and for my portrait shooting I prefer my 85mm lens whether its on my FF camera or DX camera. I have taken portraits with my 105mm and 70-200mm but my 85mm will always be the go to lens for my portraits
can I ask - When we talk about 'portraits' are you referring to headshots mainly?
This maybe why I dont see any problem with my 35mm. I tend to shoot half or full body.
Something to consider, as I don't really know, also is the kit lens 18-55mm as it is a DX lens or does the crop affect the DX line of lenses?
Lenses are described as their actual focal length so a 18-55mm is always a 18-55mm no matter what you fit it to but the field of view you get when it's mounted on different cameras will change and that's when you apply the "crop" factor.
So, a 30mm (to keep the math simple) will give you the field of view of a 30mm lens when you mount it on a 35mm "FF" camera but when you mount it on an APS-C camera it'll give the field of view of a 45mm (30 x 1.5.) lens on 35mm FF.
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This is where it's confusing me, that's fair enough, but Nikon designates some lens as designed for ''DX'' which will not work on a full frame sensor, do you see where i am coming from?
This maybe why I dont see any problem with my 35mm. I tend to shoot half or full body.