Join for FREE
It only takes a minute!
Magnifying the passion for nature. Zeiss Victory Harpia 95. New!

Welcome to BirdForum.
BirdForum is the net's largest birding community, dedicated to wild birds and birding, and is absolutely FREE! You are most welcome to register for an account, which allows you to take part in lively discussions in the forum, post your pictures in the gallery and more.

Reply
 
Thread Tools Rate Thread
Old Thursday 21st September 2017, 01:21   #1
cadegarrett
Registered User

 
Join Date: Sep 2017
Location: Fairview Heights
Posts: 1
Opticron mm4 vs mm3?

Has anyone tried both of these? Have found a demo version of the MM3 for a very good price, but want to make sure I am not missing any advancements with the MM4?

I am primarily using it for long hikes so will be going with the 50mm version for ultralightweight.

I saw a few old threads on the HDF eyepiece vs SDL. Looks like most people believe it is 6 in one half dozen in the other. Any differing viewpoints?

Thank you in advance.
cadegarrett is offline  
Reply With Quote
Old Thursday 21st September 2017, 02:18   #2
KC Foggin
Super Moderator
 
KC Foggin's Avatar

 
Join Date: Nov 2002
Location: Myrtle Beach SC "Smiling Faces, Beautiful Places"
Posts: 221,668
Hi there and a warm welcome to you from those of us on staff here at BirdForum

I've moved your thread to the Opticron section of the Forum where you're likely to get more answer. I've also subscribed you to this thread so that you'll be notified whenever someone posts reply.
__________________
KC a/k/a common KC

Karma - What you send out
Comes right back at ya
KC Foggin is offline  
Reply With Quote

BF Supporter 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 Support BirdForum With A Donation

Old Thursday 21st September 2017, 13:27   #3
mayoayo
Registered User
 
mayoayo's Avatar

 
Join Date: Nov 2004
Location: El Garraf
Posts: 2,129
You would be missing nitrogen purging..the mm3 version does not offer this extra protection against fogging..the scope could be waterproof ,f it is well sealed,but full ,guaranteed weatherproofing requieres the scope to be filled with gas,to eliminate the chance of fogging in extreme conditions
The MM4 model seems to be fully water/ weatherproofing ,nitrogen filled.
mayoayo is offline  
Reply With Quote
Old Friday 22nd September 2017, 14:48   #4
FrankD
Registered User
 
FrankD's Avatar

 
Join Date: Feb 2005
Location: Eastern Pennsylvania
Posts: 8,365
Agree with Mayoayo, however I have owned an MM3 50 mm since the year of its introduction (3 or 4 years ago) and have not had any issues with internal fogging, mold, etc...

I did compare the 3 to the 4. Cosmetically and mechanically they are identical. They did apparently switching coatings though as the reflections are different plus the MM4 has slightly increased contrast. Whether that is worth the price difference is entirely up to you.
__________________
Visit our Optics Review site......
http://opticstheviewfromhere.com/
Digiscoped videos .....
https://www.youtube.com/channel/UCAf...1LMvsLF0DExoog
FrankD is offline  
Reply With Quote
Old Sunday 24th September 2017, 16:14   #5
Bill Atwood
Registered User

 
Join Date: Feb 2004
Location: Central Illinois
Posts: 813
I have both scopes in 60mm and both zooms. After a fair amount of backyard and lakeside viewing I really don't notice a difference in the image itself (MM3/HDF vs MM4/SDL). I believe Frank is right in the increased saturation and contrast of the MM4, but its barely noticeable. Acuity at 45x appears identical. The primary difference (visually) in the zooms is FOV although its not that great. The SDL has a nice "walk-in" image at the high mag which, while zooming out, can make the slight tunnel view at the low end seem worse than it is.

Also, my SDL is somewhat prone to internal reflections from light coming in from the side of the user. A brimmed cap or hat should help with that.

For a travel or backup scope I see no reason to upgrade from MM3/HDF to MM4/SDL. For a main scope there is still very little point in upgrading unless you don't mind spending the money to have the absolute latest model and the official waterproofness of the SDL.

I do not recommend the Opticron stay on case. The scope is virtually unusable with it on.

And...I really wish Opticron would come up with some better lens covers. The set back of the objective lens from the front of the body is quite small and the soft rubber cover can easily be depressed to touch the lens. A Kaiser 74mm lens cover is better, but still does not offer the level of protection I'd like.

Last edited by Bill Atwood : Sunday 24th September 2017 at 16:17.
Bill Atwood is offline  
Reply With Quote

BF Supporter 2010 2011 2012 2013 2014 2015 2016 2017 Support BirdForum With A Donation

Old Wednesday 27th September 2017, 19:49   #6
Alexis Powell
Registered User

 
Join Date: Dec 2003
Location: Lawrence, Kansas, USA
Posts: 2,667
Quote:
Originally Posted by Bill Atwood View Post
...I really wish Opticron would come up with some better lens covers. The set back of the objective lens from the front of the body is quite small and the soft rubber cover can easily be depressed to touch the lens. A Kaiser 74mm lens cover is better, but still does not offer the level of protection I'd like...
I'm a big fan of the Quake Bushwacker optics covers, specifically the black (not transparent yellow) version. The size 7 is a perfect fit on my Nikon 50 ED, and the size 8 fits my 60mm scope. Similar products are made by others, but I especially like the fit and materials of this brand in comparison to some others that I've seen.

--AP
Alexis Powell is offline  
Reply With Quote
Old Thursday 28th September 2017, 04:31   #7
Bill Atwood
Registered User

 
Join Date: Feb 2004
Location: Central Illinois
Posts: 813
Thanks Alexis, but it appears that Size 7 is the largest available, but its too small for the 60mm that has an OD of 2.88". Vortex and Butler Creek make similar covers, but also fall short for 60mm objective scopes.
Bill Atwood is offline  
Reply With Quote

BF Supporter 2010 2011 2012 2013 2014 2015 2016 2017 Support BirdForum With A Donation

Old Friday 29th September 2017, 18:01   #8
Alexis Powell
Registered User

 
Join Date: Dec 2003
Location: Lawrence, Kansas, USA
Posts: 2,667
Quote:
Originally Posted by Bill Atwood View Post
Thanks Alexis, but it appears that Size 7 is the largest available, but its too small for the 60mm that has an OD of 2.88". Vortex and Butler Creek make similar covers, but also fall short for 60mm objective scopes.
Yes, size 7 works for 50 mm but would be too small for 60 mm. I guess size 8 has been discontinued. Bummer. It's a great product, but perhaps it didn't sell well. They're especially suitable for scopes that don't have a built-in hood. The rubber attachment provides some armor, and the flip-open cap is robust and secure. I wish they made a really big one that would fit my old Nikon 78ED.

--AP
Alexis Powell is offline  
Reply With Quote
Old Saturday 30th September 2017, 02:52   #9
Bill Atwood
Registered User

 
Join Date: Feb 2004
Location: Central Illinois
Posts: 813
I really like that style of cap and you had my hopes up. Nightforce is another brand I've discovered, but it also ends at just over 2.5" OD. Looks like they are all designed for rifle scopes which seem to max out at 56mm objectives.
Bill Atwood is offline  
Reply With Quote

BF Supporter 2010 2011 2012 2013 2014 2015 2016 2017 Support BirdForum With A Donation

Advertisement
Reply


Thread Tools
Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is Off
HTML code is Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Opticron Discovery 8x32 v Opticron Savanna 8x30 Petrus82 Opticron 6 Sunday 3rd August 2014 12:02
Opticron ES80 ED Vs Opticron GS815 ED SPOTTED FLYCATCHER Opticron 0 Sunday 29th June 2008 12:41
Opticron HR80 GA or Opticron ES80 SD chiffchaffer Opticron 8 Wednesday 11th June 2008 22:42

{googleads}

Fatbirder's Top 1000 Birding Websites

Help support BirdForum

Page generated in 0.16838288 seconds with 19 queries
All times are GMT. The time now is 05:08.