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ric412
04-13-2008, 04:46 AM
Hello all here is some snaps i took while i was at basketball just trying out my new lens.... the 85mm 1.8 Prime.... very nice lens.. Can't wait till next time
Enjoy Ric


http://farm3.static.flickr.com/2227/2408496717_661a6a21b9.jpg

http://farm3.static.flickr.com/2353/2409330604_1b0239b537.jpg

http://farm3.static.flickr.com/2310/2408496139_3370ed85cb.jpg

LensBaby
04-13-2008, 05:01 AM
WOW what nice photos! This makes me want to go buy a faster lens!

jerryph
04-13-2008, 07:43 PM
WOW what nice photos! This makes me want to go buy a faster lens!

A fast lens does make a big difference. I have a few fast lenses now, and the Nikkor 85mm F/1.4 is the next one on my list sometime this summer. If you want to try a challenging place to practice your low light, fast motion lenses and technique, try a local ice rink. The local one here is going on 45 years old, has light intensity differences from end to end as well as WB shifts in sections.

Perfect for some practice, which is where I was yesterday afternoon.

LensBaby
04-13-2008, 08:28 PM
We have one right down the street. I might just try that, because my daughter and husband love to ice skate.

jerryph
04-13-2008, 09:31 PM
A fun place to practice for sure, however, you will need something that does F/3.5 or better and ISO 1600 (or higher) to get the shutter speeds you need.

http://farm3.static.flickr.com/2360/2410702650_14ea7ba2e3.jpg

Enjoy!

LensBaby
04-13-2008, 10:15 PM
My 18-200 does 3.5 What is your EXIF info on the photo above this post?

jerryph
04-14-2008, 02:03 AM
My 18-200 does 3.5 What is your EXIF info on the photo above this post?


Your lens will do it at 18mm, higher F-stop as you raise the focal point, likely around 4-4.5 at 50mm (the lens I was using was a 50mm F.1.8):

Creation date: 4/12/2008 15:38
Make: NIKON CORPORATION
Camera: NIKON D200
Focal length: 50*mm*(equiv. 75*mm)
Aperture: F3.5
Exposure time: 1/250"
ISO speed rating: 1600
Program: Manual
White Balance: Manual

Just for the heck of it, the next time I will push the ISO to 3200 and see what apertures I can hit. It will mean more noise, though.

LensBaby
04-14-2008, 02:13 AM
Thanks Jerry for the information. I am going to have to go to the rink and give it a shot.

dkippen
04-14-2008, 02:18 PM
Ric - these are very nice, clear shots.

I keep hearing the term "fast" lens. I don't mean to sound like an idiot, but what exactly does that mean?

LensBaby
04-14-2008, 04:17 PM
Debbie the shutter speed can be faster, because it lets in more light. Here this is something I found on fast lenses, maybe it will help.

f4 lets in 4 times as much light as f8. If you have f4 at
1/125 of a second f8 would be 1/30, f5.6 1/60

jerryph
04-14-2008, 04:22 PM
I keep hearing the term "fast" lens. I don't mean to sound like an idiot, but what exactly does that mean?

The bigger the aperture is, the faster the shutter has to be to properly expose the light. A fast lens can be considered a lens that has a huge aperture (F/2.8 or numerically lower), so that shutter speeds go higher for every step bigger the aperture opens.

Thats why they call lenses that are between F/1 to F/2.8 as being "fast" lenses.

dkippen
04-14-2008, 05:18 PM
Sue - I knew the part about the shutter speed, but I had a hard time relating that to aperature. I did read again and again and again the book "Understanding Exposure" and that helped some, but I don't remember the reference to "fast lens".

Jerry - Got it. So, with the larger aperature, regardless of prime or zoom lens, would be considered a fast lens?

jerryph
04-14-2008, 05:49 PM
Yes. A fast lens is not catagorized into primes or zooms, just that it is able to get higher shutter speeds in lower light than a lens that is slower and may not let you get the shot.

My 105mm F/2.8 prime could be considered fast, as could the 50mm F/1.8 primes and so on. My Nikkor 18-200 is not really a fast len becuase it goes from F/3.5 at the 18mm end and as I zoom up to the 200mm range, it closes down to a F/6 aperture opening. In a low light situation, I will likely get some motion blur if I zoom too far as the shutter speeds will slow down to help me get the right exposure, but if I used the Nikkor 70-200, I could maintain a constant F/2.8 all the way up to 200mm, and get fast shutter speeds.

LensBaby
04-14-2008, 06:08 PM
Jerry you explained that very well. Are you sure your not a pro already? hehehe :D