Forgot Password
Pentax Camera Forums Home

Show Printable Version Search this Thread
02-11-2010, 02:04 AM   #1
New Member

Join Date: Sep 2009
Location: The American Southwest
Posts: 12
Pentax SMC 300mm f4

If you have used both, do you find the added reach of the 300 significant for field sports compared to a 200 ?

I was shooting a rugby match recently and was wishing to be in a bit tighter in the scrum but I do not know if the 100 difference in the 67 format will really be all that noticeable or not.

02-11-2010, 07:10 AM   #2
Lowell Goudge's Avatar

Join Date: Jan 2007
Location: Toronto
Photos: Gallery | Albums
Posts: 15,400
the difference will be the same regardless of format.

images from a 300mm will be 50% bigger than those from a 200mm lens.

it all goes back to math

Image size = Subject size x Focal length / Subject distance
02-11-2010, 09:49 AM   #3

Join Date: Jul 2009
Location: Seattle
Posts: 7,103
I have the 67 300mm M* ED IF lens. And, yes, there is a difference. But if it is enough of a difference for you I can't say. I take it you are aware of the precautions you need to consider when you shoot the older 300mm? Even with the newer 300mm, I find it needs to be really supported by both its tripod mount and the camera body mount for shutter speeds under 1/60. But for sports, you'll be above that most likely.

If you get the older 300mm, consider an inexpensive video camera rail system to mount it and the camera on then mount the rail to a sturdy tripod.

Last edited by tuco; 02-11-2010 at 09:56 AM.

  • Submit Thread to Facebook Facebook
  • Submit Thread to Twitter Twitter
  • Submit Thread to Digg Digg
Tags - Make this thread easier to find by adding keywords to it!
camera, medium format
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Similar Threads
Thread Thread Starter Forum Replies Last Post
Pentax SMC DA 55-300mm F4-5.8 Ed JimD_K10D Troubleshooting and Beginner Help 6 08-20-2010 05:58 PM
SMC PENTAX FA* 300MM F2.8 available netuser Photographic Technique 4 11-14-2009 08:14 PM
For Sale - Sold: Pentax 300mm F/4: SMC-A* and SMC-Takumar SOldBear Sold Items 7 11-05-2009 07:14 PM

All times are GMT -7. The time now is 09:07 PM. | See also:, part of our network of photo forums!
  • Red (Default)
  • Green
  • Gray
  • Dark
  • Dark Yellow
  • Dark Blue
  • Old Red
  • Old Green
  • Old Gray
  • Dial-Up Style
Hello! It's great to see you back on the forum! Have you considered joining the community?
Creating a FREE ACCOUNT takes under a minute, removes ads, and lets you post! [Dismiss]