Depth of field - Learn something new every day...

[sillymike]

Having suffered from cabin-fever over the holiday, I found myself spending way too much time perusing the web looking for that perfect-to-me scope to use for HFT...



Biggest challenge seemed to be to find a scope with the reticle I like, with a small-enough objective that would give decent depth of field.

That was until, I stumble upon the March Modifier Disks

• a)
  May cut incoming light by as much as 50%, depending on brightness of conditions.
  
• b)
  Depth of focus increases by approximately 50%.
  
• c)
  Modifies and reduces mirage effect.
  
• d)
  Does not employ lenses. Perforated aluminum disk weighs only 1/4 oz. The Modifier Disk screws onto the scope, in front of the objective lens (only for the 52mm and 56mm objective lenses scopes
  

So using this logic, just about any scope could be made to work!

 

[Motorhead]

In theory perhaps ... you still must deal with how precise the parallax wheel is tied to the mechanics that move the mechanics within the scope. Backlash and rotation direction preference still apply.

A scope that only has 120* of wheel rotation will still only have 120* and the distance separation marked on side wheel will remain crowded.

Killing the incoming light ( Brightness ) makes being able to ascertain small details which is a key component much harder to do and WHY we see most folks using LARGE and BRIGHT optic scopes for the game of FT. 



Just keeping it real ....

 

[Therealld]

Even a much larger wheel rotation, in of itself, doesnt meant the longer range numbers will be more accurate, or even really close together.

 

[sillymike]

Yeah, but in Hunter Field Target you're not allowed to make any adjustments on the scope once you've started a match.

 

[Motorhead]

In the USA under AAFTA rules you can indeed change scopes MAGNIFICATION and SIDE / OCULAR focus during a match ... Just Can't adjust the elevation / windage turrets.

If the ring works for you ... great, use it to your advantage.



These comments are not to argue, but share with you some experience by those who are quite knowledgeable and successful in the FT game.



Scott S 

 

[sillymike]

Comments are much appreciated!

For a reason or another, I'd just assume that FT and HFT rules where the same on both side of the Atlantic

- I guess I ought to check if there are a different set of rules for Canada! (Learn something new every day!)

 

[Scotchmo]

Yeah, but in Hunter Field Target you're not allowed to make any adjustments on the scope once you've started a match.

As others have stated, in AAFTA Hunter Division, you are allowed to focus range find. Though it would be legal to use an objective reducer in AAFTA Hunter Division, the extended depth-of-field would make focus ranging less precise.

AAFTA Hunter Division is very much like FT and no longer has much in common with HFT.

Your idea is not legal in "REAL" HFT. In HFT you are not allowed to use aperture or ocular reducers to extend your depth-of-field.

An extended depth of field is an advantage in HFT, but a disadvantage in FT (including AAFTA Hunter Division).

 

[Motorhead]

Absolutely ... in the American game in "Hunter" we want the SHALLOWEST depth of Field we can get out of a scope .. so it does range find better via parrilax articulation.