I can't change the focal length on my Sigma 70-300mm F4-5.6 DG OS mounted on my Nikon D3200- it is stuck at about 140mm?
83928
There is a lock somewhere outside the lens near the body. This might prevent you from changing the focal length.
1898464
I use a 70-300 Sigma. It will work but on manual you can zoom all the way and focus yourself. If your on auto focus it will work only till about 200 mm then it won't focus anymore. But this is what happens with this lens. Can say for sure if it will on any other. As for picture quality I did notice a fair difference. Not very clear when zoomed all the way. But need to try with a tripod. I got it for my birding and does not work well for that for me.
45803
Hi David,Not that I'm aware of. My lense, lent to a mate with a 7100, worked no problem to produce some comparative test images for him against a Nikon 70-200 and he has subsequently gone and bought a 50-150 on the basis of that test! The dealers here in Rome (I've spoken to two) have been perfectly happy to use their USB mounts to update lenses for customers for free. I don't know if that is the case in the UK but I would imagine so, so if you were to find you had an issue (which I believe to be an unlikely scenario) I'd suggest taking it to a Sigma dealer and ask him to update it for you but I really don't think you will find it necessary.Happy New Year.Will Hi David,Not that I'm aware of. My lense, lent to a mate with a 7100, worked no problem to produce some comparative test images for him against a Nikon 70-200 and he has subsequently gone and bought a 50-150 on the basis of that test! The dealers here in Rome (I've spoken to two) have been perfectly happy to use their USB mounts to update lenses for customers for free. I don't know if that is the case in the UK but I would imagine so, so if you were to find you had an issue (which I believe to be an unlikely scenario) I'd suggest taking it to a Sigma dealer and ask him to update it... » Read More Hi David,Not that I'm aware of. My lense, lent to a mate with a 7100, worked no problem to produce some comparative test images for him against a Nikon 70-200 and he has subsequently gone and bought a 50-150 on the basis of that test! The dealers here in Rome (I've spoken to two) have been perfectly happy to use their USB mounts to update lenses for customers for free. I don't know if that is the case in the UK but I would imagine so, so if you were to find you had an issue (which I believe to be an unlikely scenario) I'd suggest taking it to a Sigma dealer and ask him to update it for you but I really don't think you will find it necessary.Happy New Year.Will « Show Less
1632324
Not sure why it says 4 inches. I can get it to focus at less than one inch. It's a great 30mm lens for macro photography.
54375
It depends if you have other lenses with different focal distances but on a crop sensor it will be about 56mm. I know someone with a 70D who only uses this lens and it works great for him.
1449308
No you dont. The term 'focal length multiplier', and I am assuming you are referring to this number, does nothing to your focal length. It is a horrible term. It is your FOV (field of view) that changes.
913376
I bought this for use on he D800, it does not work, I wanted it for the 150-500 Nikon lens, I contacted Sigma they confirmed that the lens would be too slow to use with the convertor.
236866
I don't own D200 but D200 appears to be a DX camera, which has a crop sensor, not full frame. Hence the focal length will be equivalent of 27mm-52.5mm. The strongpoint of this lens is that it's very wide and sharp, but with a DX camera obviously it won't be as wide as you want it to be, compared to 12-24mm lens you mentioned, which is for DX camera unlike this 18-35mm lens. Do you find the focal length 27-52.5mm useful to you?
160523
I wasn't aware Sigma made this same lens in a "macro" version? Becarefull believing the discriptions as some "used" products are misrepresented. Any how, macro will allow for a shorter minimum focus distance. Good luck
328795
I too own a D40X and want to try this lens...have a Sigma 18-200mm lens but want to get another lens that offers sharp fotos of mountains...my currents lens cannot do that, but I do love its versatility.
1296018
No, unfortunately there is not. The ring on the lens adjusts the focal length only.
901099
hello. not sure about the sigma, but i've been able to use the tamron pro SP X1.4 TC w/ the Nikon 300mm, F/4 lens w/ good results.
1937691
Hi. I purchased the same lens 2 days ago and yes, I am a novice using a D300. I have the same 'err' reading but when i switch and locked to f/22 i realised that the camera body electronically controls the aperture setting - which you can obviously set in 'A' mode. I assumed that the manual a f adjustment ring on the lens then was only for cameras that do no have electronically controlled A settings via the body.
1412430
there is no way that I am aware of to change the lens system. it is all self contained.I have had very good luck with mine as is. I hope this helps answer your question
2060950
Hello... To be honest, I returned the lens because I could not figure it out and I realized I bought the wrong lens... Good luck...
713256
What I discovered accidentally is that the bezel on this camera can be turned to change the focal length, so a slight adjustment will give you clean HD even just a couple of inches from the lens if that is what you need. You'll have a fish-eye distortion, but it will be in focus.
293371
The Sigma 10-20-mm lens will do that: at 14 mm focal length the field of view at 3 feet from the lens is 5.03 feet. However, the faces will be distorted. You can get the same field of view with a 28 mm lens at 7.0 feet with somewhat less distortion.