128 mm lens for nikon slr: I am a newby but came across film camera on craigs list with lens 300mm,128mm, 50mm will they work on my d3100 also I can't find any info on a 128 mm lens...

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128 mm lens for nikon slr

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Jun 24, 2015 07:30:02 #

banderber Loc: Central Texas

I am a newby but came across film camera on craigs list with lens 300mm,128mm, 50mm will they work on my d3100 also I can't find any info on a 128 mm lens

Thanks for the help

Jun 24, 2015 07:39:10 #

jerryc41 Loc: Catskill Mts of NY

banderber wrote:

I am a newby but came across film camera on craigs list with lens 300mm,128mm, 50mm will they work on my d3100 also I can't find any info on a 128 mm lens

Thanks for the help

Nikon lenses generally fit on Nikon cameras, but they won't autofocus with your D3100 if they don't have a focus motor. Get the exact details - complete name - of the lenses. Then Google them and make sure they're what you want. Also, check prices for the same lenses on ebay. When you search there, you can go to the bottom of the left column and see how much they have actually sold for.

http://www.photosynthesis.co.nz/nikon/
http://support.nikonusa.com/app/answers/detail/a_id/14439/related/1

You can do lens comparisons at these sites.

http://www.dpreview.com/products/compare/lenses
http://lenshero.com/lens-comparison
http://www.the-digital-picture.com/Reviews/ISO-12233-Sample-Crops.aspx
http://www.lenstip.com/lenses.html
http://www.dxomark.com/Lenses/Compare

Jun 24, 2015 07:47:16 #

Insufficient ingormation. If you go to the Nikon website and look in the support section you will eventually find a pdf file of the user manual for your camera. There will be a lens comparability chart in it. You can also find information on this at kenrockwell.com. Basically you only wand a "G" series lens. The only info I can find on 128mm lens is that it is probably for television cameras. -- not likely to work with a D3100

Jun 24, 2015 09:21:58 #

Mac Loc: Pittsburgh, Philadelphia now Hernando Co. Fl.

banderber wrote:

I am a newby but came across film camera on craigs list with lens 300mm,128mm, 50mm will they work on my d3100 also I can't find any info on a 128 mm lens

Thanks for the help

Are they Nikon lenses?

Jun 24, 2015 20:47:41 #

banderber Loc: Central Texas

all of the equipment is suppose to be nikon supposed too have paid over two grand when origanally purchased

Jun 24, 2015 20:49:50 #

banderber Loc: Central Texas

it posted on craigs list for 150.00 I thought how could I go wrong possible miss print I suppose

Jun 24, 2015 21:42:52 #

Mac Loc: Pittsburgh, Philadelphia now Hernando Co. Fl.

banderber wrote:

all of the equipment is suppose to be nikon supposed too have paid over two grand when origanally purchased

If they are pre-AI lenses, I don't know if the will work or even fit on your camera. I have read a little about those type of lenses, but that's about it. I'm sorry I can't be any help.

Jun 25, 2015 07:12:50 #

JDURBAN Loc: Allentown, PA

It sounds like the aperture not the focal length. Could it be 1:2.8?

Jun 25, 2015 07:21:05 #

Howard5252 Loc: New York / Florida (now)

banderber wrote:

for 150.00 I thought how could I go wrong

Actually, you could go wrong to the tune of $150. If they are Nikon lenses, they probably will fit. The question is ... why would you want to take a giant technological step backward ? If you don't mind manual focus, there are a lot of older excellent lenses out there - just understand what you're buying.

Jun 25, 2015 07:21:21 #

GoofyNewfie Loc: Kansas City

JDURBAN wrote:

It sounds like the aperture not the focal length. Could it be 1:2.8?

Smart answer! :thumbup:

Jun 25, 2015 07:40:41 #

Manny Jay Loc: Colorado

FIRST!!! Don't put any unknown lens on your camera. It may never come off!

Next, go to the following Nikon Compatibility site:

http://www.kenrockwell.com/nikon/compatibility-lens.htm

Have fun!
Manny

Jun 25, 2015 12:48:45 #

houdel Loc: Chase, Michigan USA

If they are Nikon lenses, they will probably fit. However, if they are pre-AI, they may damage your camera unless they have been modified. If they are AI or AI-S lenses they will work fine but they will not auto focus, nor will the meter on your D3100 meter correctly (if at all). If they are AF lenses they will fit and meter but will not autofocus because the D3100 does not have a focus motor.

AI & AI-S lenses have two aperture scales, one above and one below the metering prong; non AI lenses have only one aperture scale above the metering prong as shown in the photo below. The lens on the left is AI/AIS, the lens on the right is pre-AI.

AI/AI-S on left, pre-AI on right