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View Full Version : How much is a 50mm on a DSLR



hankbeblazin
09-13-2007, 03:01 PM
how much will the 50mm be on a dslr ? i read a review of someone who said it was almost like a telephoto on a DSLR, i dont know if hes right so i wanted to ask

DonSchap
09-13-2007, 03:15 PM
When you mount a 50mm lens on a 35mm-film camera body ... the ratio is 1:1 ... or 50mm.

When you go to an APS-C digital camera body ... such as a Nikon D40, D50, D70, D200 ... the ratio goes to 1:1.5 or 1.5 times the focal length of the lens.

Doing the math: 1.5 x 50mm = 75mm <-- your answer, by the way

So, you would see, looking through the viewfinder of the digital ... the very same frame of image you would would get if you had a 75mm lens mounted on your 35mm-film camera.

Hope this makes sense ... just remember ... it's effectively 50% more telephoto lens on the digital.

TheObiJuan
09-13-2007, 03:19 PM
When you mount a 50mm lens on a 35mm-film camera body ... the ratio is 1:1 ... or 50mm.

When you go to an APS-C digital camera body ... such as a Nikon D40, D50, D70, D200 ... the ratio goes to 1:1.5 or 1.5 times the focal length of the lens.

Doing the math: 1.5 x 50mm = 75mm <-- your answer, by the way

So, you would see, looking through the viewfinder of the digital ... the very same frame of image you would would get if you had a 75mm lens mounted on your 35mm-film camera.

Hope this makes sense ... just remember ... it's effectively 50% more telephoto lens on the digital.

what he said. ;)

hankbeblazin
09-13-2007, 03:46 PM
alright so i'm going to be taking pictures of concerts with inside lighting, i want a zoom lense but the only one i can find thats low light is the 70-200mm f2.8 and thats like 1700 bucks, is there anything around 200-250 i know thats a stretch, or should i just get the 50mm 1.8 prime?

i know the auto focus on the 50 prime doesnt work and thats somewhat of a drawback for me i mean if i have to i can do it i'd just rather find one that is low light and AF-S or AF-I i doubt i'll find one in my price range though, let me know

DonSchap
09-13-2007, 03:49 PM
It's not quite as good, but check into the SIGMA APO 70-200mm f/2.8 DG HSM ... it's a lot cheaper. I'm seeing it out there, on-line, from $800-900. Bring a monopod ;)

It'll probably deliver the shots you want. If not, throw it back! :D

If you want Image Stability ... rent the Nikon AF-S VR Zoom-Nikkor 70-200mm f/2.8G IF-ED (2.9x) lens for the night ... it'll be a lot cheaper than having it sit in your bag, after the concert. If you were talking about $200-250 ... rent is your only solution. :eek:

Remember, on the APS-C digital ... the focal length goes from 70-200mm to effectively 105-300mm.

Esoterra
09-14-2007, 02:39 PM
how much will the 50mm be on a dslr ? i read a review of someone who said it was almost like a telephoto on a DSLR, i dont know if hes right so i wanted to ask

It doesnt matter if your using a DSLR or a 35mm. The 50mm will be what ever price you pay for it at the store.

fionndruinne
09-14-2007, 05:03 PM
The Sigma 50-150mm f/2.8 can be had for $600, and is significantly smaller and lighter than the 70-200mm's. It's your cheapest bet for a low-light telephoto that will autofocus on the D40.

r3g
09-14-2007, 06:24 PM
Not to mention you wont miss that extra 50mm of zoom with the Sigma 50-150mm f/2.8 AND it takes awesome pictures.

hankbeblazin
09-14-2007, 06:34 PM
thanks for all the advice guys i'll keep it in mind for the future. right now i just had to get a telephoto and a low light. i spent 300 bucks.

i got the famed 50mm 1.8 and the AF 70-300mm i read the 70-300mm has some problems but i'm just gonna use it for now until i can save up around 2 grand to get some really good glass.

thanks alot for all the advice i appreciate it

Rooz
09-14-2007, 06:39 PM
the sigma's has are good telephotos that are more reasonabley priced than the nikkors.

XaiLo
09-14-2007, 06:50 PM
In that case ship me your 70-200mm and I'll ship you a 50-150mm. I can always use a spare:) lol

tcadwall
09-18-2007, 07:05 AM
Another temporary solution might be to add a Tamron 90mm... Just get the newest version, since it is less likely to introduce internal reflections (more of a concern on DSLRS than 35mm film). For a prime it is quite versatile, and the reviews are very good. It also is a Macro lens.

printmypics
09-21-2007, 09:36 AM
Check out the SIGMA APO 70-200mm f/2.8 DG HSM - price ranging between $800 - $900.