Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
02-01-2018, 04:05 AM - 3 Likes   #31
Loyal Site Supporter
Loyal Site Supporter




Join Date: Mar 2009
Location: Gladys, Virginia
Photos: Gallery
Posts: 27,571
QuoteOriginally posted by Socrateeze Quote
I hope I'm not being terribly dense, but I think you've misunderstood the scenario I've described. I said *two lenses*, not "the same lens". And by "same image" I mean you'd see the same image through each lens: same angle of view, everything. It would be like having an 18mm lens with an APS-C sensor and a 28mm lens with a full frame sensor - the image and angle of view is (essentially) the same in both cases, right? This is why I specified that "the projected image is more concentrated on the smaller sensor" to try to make that clear - it's the same image with the same field of view, just squeezed down to a smaller surface area to completely cover the smaller sensor, with no cropping. Wouldn't the 18mm lens with the APS-C sensor capture less detail than otherwise optically identical 28mm lens with the full frame?

S.
Shooting with APS-C gives a crop of of what shooting with a full frame sensor does. If you choose lenses that give identical field of view (eg 55mm on APS-C and 85mm on full frame), your images will look similar with changes in rendering based on the lenses you chose. Typically, the full frame sensor will produce an image with less noise, better dynamic range, and more resolution when viewed at the same size. But it isn't really that the APS-C image is concentrated. It is just that the APS-C is cutting off the edges of what the full frame sensor sees. If you took a K-1 image with a 50mm lens and then cropped it to APS-C, you would have an identical image to what you would see if you just mounted that same lens on a K5 II and took the image.

Reply

Bookmarks
  • 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!
fa, fa*, image, k-1, k-mount, lenses, pentax lens, range, slr lens
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Image sensor quality Pentax K1 vs Nikon D850 vs Sony A7rIII Andy Fern Pentax DSLR Discussion 33 01-21-2018 09:25 AM
K-5 vs MZ-S vs LX vs PZ-1p vs ist*D vs K10D vs K20D vs K-7 vs....... Steelski Pentax K-5 & K-5 II 2 06-28-2017 04:59 PM
Difference in image quality : Pentax 18-5mm kit, Pentax 35mm f2.4 prime richardstringer Pentax SLR Lens Discussion 16 08-27-2013 12:27 AM
SMC 55/1.8 and 28/3.5 image quality -- big difference? noctilux Pentax SLR Lens Discussion 17 12-04-2011 02:28 PM
Photo quality difference between DA Star 55mm F1.4 vs FA 31mm F1. 8 Limited tin008 Pentax SLR Lens Discussion 12 07-04-2010 02:36 PM



All times are GMT -7. The time now is 01:50 AM. | See also: NikonForums.com, CanonForums.com 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?
register
Creating a FREE ACCOUNT takes under a minute, removes ads, and lets you post! [Dismiss]
Top