Wrong thread, but Phoenix, the resident techie has covered this in several threads
and the answer is buy the WT, not the Pulsar: viewtopic.php?f=42&t=17156viewtopic.php?f=42&t=16971viewtopic.php?f=42&t=16363
This is the meat and potatos:
Just had a quick look at the specs of the XP50 trail (640x480) and the XQ 50 trail (384x288)
In terms of detection range, the current Apex XD75 is still the best!!!
Hornady - since all 3 scopes used the same OLED display, the magnification is defined by the diameter of the objective lens and the physical size of the sensor - NTSC/PAL doesn't come into it
Of the 2 new scopes, I think the XQ50 trail will be better value for money (640x480 sensors are a LOT more expensive than 384x288)
A quick way to compare the detection capability of any thermal is to divide the pixel size by the focal length of the objective lens.
This is known as the instantaneous field of view (IFOV)
The number you get is in milliradians (mrad - like some scope turrets) and the smaller the number, the longer the detection range for a given size of target
The Apex XD thermals use a 25 micron pixel sensor and the new Trail thermals (XQ and XP) use a 17 micron sensor
So, the old Apex XD75 has an IFOV of 0.333 mrad, and both the Trail XP50 and the Trail XQ50 have an IFOV of 0.34mrad.
i.e all 3 are virtually identical and none nearly as good as a WT1-75-3 which has an IFOV of 0.22mrad
The new Trail thermal have some significant improvements in terms of the battery pack, video and wifi, but they will NOT give you a clearer image of a potential target than the current XD75, and they will certainly not be better than the WT1-75-3 or WT1-75-6.