Win a Pentax Limited Lens: Raffle Now Live!

konraDarnok · 09-24-2013, 03:17 PM

Is this a useful image? I want to include a few test charts in an upcoming lens review. I'm generally trying to follow the "tips on photographing the chart" found here.

Ole · 09-24-2013, 04:01 PM - **1 Like**

The edges of the image frame (viewfinder if a 100% finder or else live view) should match the tick marks on the horizontal frame of the chart. Each frame format (4:3, 3:2, etc.) has their own tick marks.

If you do that the numbers on the chart become meaningful (10 = 1000 line pair per picture height).

However, an APS-C sensor and any decent lens can resolve even the finest pattern on the chart, so for testing APS-C sensor-based equipment you should double the distance to the chart. 10 now means 2000 lp per picture height.

09-24-2013, 03:17 PM	#1
konraDarnok Veteran Member Join Date: Aug 2007 Photos: Albums Posts: 969	am I too close to my test chart? Is this a useful image? I want to include a few test charts in an upcoming lens review. I'm generally trying to follow the "tips on photographing the chart" found here.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Am I stressing out the camera AF too much?	atekant	Pentax K-5 & K-5 II	6	05-01-2012 07:30 AM
Shooting 6 MP JPEGs; am I giving up too much?	Nick Siebers	Pentax K-5 & K-5 II	33	02-28-2012 04:48 PM
Can I use my old lenses? MZ7 to K5 or am I trying to punch above my weight	highly amateur	Troubleshooting and Beginner Help	10	05-02-2011 09:22 AM
I am a pro shooter and here is why I am so excited for my K-5 to get here tomorrow	benisona	Pentax K-5 & K-5 II	102	10-31-2010 04:52 PM
Am I asking for too much?! Am I being bamboozled?!	jshurak	Photographic Technique	39	03-12-2008 01:41 PM

09-24-2013, 04:01 PM - 1 Like	#2
Ole Administrator Join Date: Sep 2006 Location: Copenhagen, Denmark Photos: Gallery \| Albums Posts: 4,409	The edges of the image frame (viewfinder if a 100% finder or else live view) should match the tick marks on the horizontal frame of the chart. Each frame format (4:3, 3:2, etc.) has their own tick marks. If you do that the numbers on the chart become meaningful (10 = 1000 line pair per picture height). However, an APS-C sensor and any decent lens can resolve even the finest pattern on the chart, so for testing APS-C sensor-based equipment you should double the distance to the chart. 10 now means 2000 lp per picture height.

am I too close to my test chart?

Win a Pentax Limited Lens: Raffle Now Live!