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 Tuesday 25th August 2015, 15:58   #1
chordstrummer
Registered User

 
Join Date: Jun 2015
Location: West Yorkshire
Posts: 116
Filter for APO 77

Hello all.

I recently bought a Nikon filter for my scope but it makes the image blurry- so much so I thought there was something wrong with the scope until I remembered the new filter and breathed a sigh of relief. Can anyone recommend filters which are compatible please as I'm wanting to protect the objective from mishaps during use and transit?

As an aside, what makes one filter blurry and another compatible besides quality of the glass?

Thanks in anticipation.
chordstrummer is offline  
Reply With Quote
Old Tuesday 25th August 2015, 17:29   #2
Robin Edwards
Registered User

 
Join Date: Nov 2004
Location: Bedfordshire
Posts: 1,438
placing a flat glass filter in front of an optic lens on the front of a scope or camera will often affect the image quality adversely and I have learnt my lessons from when I first obtained a good lens and did just this. The images were ghosted and pretty much fit for deletion only once viewed back on the PC
The advice I took at the time was to take care of my lens using caps and hoods but not to use filters.
__________________
Robin

Flickr - http://www.flickr.com/photos/49694636@N03/
Robin Edwards is offline  
Reply With Quote

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

Old Tuesday 25th August 2015, 18:54   #3
Etiennef
Registered User
 
Etiennef's Avatar

 
Join Date: Mar 2015
Location: Gothenburg
Posts: 89
I use a UV filter from B+W, and I really don't see much difference with it vs. without it.
The only significant issue I ran into was increased stray-light sensitivity (which can easily be sorted out).

If I'm not mistaken it's this one: https://www.schneideroptics.com/ecom...D=992&IID=3918
(Although I would not recommend the slim version if you want to use the original lens cap)

I also have a Kenko Pro1 digital, which was considerably cheaper than the B+W, and that works very well too considering its price.

-

However, looking through "standard" window glass of the older kind with the scope results in a more or less useless image.
But I guess there is a reason why most optical instruments are not made from cheap window glass

Last edited by Etiennef : Tuesday 25th August 2015 at 19:25.
Etiennef is offline  
Reply With Quote
Old Thursday 3rd September 2015, 17:12   #4
chordstrummer
Registered User

 
Join Date: Jun 2015
Location: West Yorkshire
Posts: 116
Hi Robin. I have managed to fit compatible filters to other scopes and there was no discernible deterioration of image quality. I am keen to fit one to my scope not least because I once purchased one with a dent in the body from the previous owner dropping it. The objective was fine having been saved from damage by a lens filter.

Another reason I like one in place is when I'm cleaning/ wiping off rain from the objective lens I don't have to worry about producing scratches and the like- I can quickly clean the lens and get on with birding. It's an extra layer of protection when the scope is in transit/storage and when sharing a hide should someone whack the scope with a tripod etc or drop it. An objective lens is expensive whilst a filter is pennies in comparison. I'm surprised more scope owners seem not to use them.

Thanks for the recommendations of filter types I'll follow them up.
chordstrummer is offline  
Reply With Quote
Old Thursday 3rd September 2015, 17:17   #5
chordstrummer
Registered User

 
Join Date: Jun 2015
Location: West Yorkshire
Posts: 116
BTW I think the Nikon lens filter is fake/faulty- I'm tending towards the former especially as the seller refunded quickly no questions asked and didn't even want it back. I held it in front of two other scopes and it produced the same blurry or distorted images. I think I can confirm window glass is very poor for optics!

Anyone know of the existence of faulty Nikon filters?
chordstrummer is offline  
Reply With Quote
Old Saturday 5th September 2015, 19:49   #6
Rotherbirder
Registered User

 
Join Date: Aug 2013
Location: South Yorkshire, UK
Posts: 550
Quote:
Originally Posted by chordstrummer View Post
BTW I think the Nikon lens filter is fake/faulty- I'm tending towards the former especially as the seller refunded quickly no questions asked and didn't even want it back. I held it in front of two other scopes and it produced the same blurry or distorted images. I think I can confirm window glass is very poor for optics!

Anyone know of the existence of faulty Nikon filters?
Many similar stories on the web of fake filters from Hoya etc, so why not Nikon? It's a 'prestige' brand that would be worth faking for those wanting to make a fast buck. I've used a (genuine) Hoya filter on my scope objective from the outset with no detrimental effects; the benefits are well worth it.
Rotherbirder is offline  
Reply With Quote
Old Tuesday 15th September 2015, 12:21   #7
chordstrummer
Registered User

 
Join Date: Jun 2015
Location: West Yorkshire
Posts: 116
Didn't realise cheaper end filters were being faked. Thinking of sealing a filter it onto the scope temporarily with self amalgamating or insulation tape to keep the rain out, on really wet days I've had the rain seep through onto the objective. Must have seeped through via the threads.
chordstrummer is offline  
Reply With Quote
Old Wednesday 14th October 2015, 21:35   #8
chordstrummer
Registered User

 
Join Date: Jun 2015
Location: West Yorkshire
Posts: 116
Quote:
Originally Posted by Rotherbirder View Post
Many similar stories on the web of fake filters from Hoya etc, so why not Nikon? It's a 'prestige' brand that would be worth faking for those wanting to make a fast buck. I've used a (genuine) Hoya filter on my scope objective from the outset with no detrimental effects; the benefits are well worth it.
Hi Rotherbirder,
I've had no end of trouble trying to find a suitable filter. Could you tell me which Hoya filter you use on your 77 and does the sun shield pull out OK over it? I've sent you a PM in case you don't read this thread again. Thanks.
chordstrummer is offline  
Reply With Quote
Old Saturday 17th October 2015, 01:24   #9
etudiant
Registered User

 
Join Date: Nov 2006
Location: New York
Posts: 3,773
Quote:
Originally Posted by chordstrummer View Post
Didn't realise cheaper end filters were being faked. Thinking of sealing a filter it onto the scope temporarily with self amalgamating or insulation tape to keep the rain out, on really wet days I've had the rain seep through onto the objective. Must have seeped through via the threads.
The tape idea is a good one. Certainly I too have had trouble with moisture accumulating behind the filter on my scope in wet conditions.
I subsequently ditched the filter in favor of a deep hood, which unfortunately does add to the bulk. A sealed filter might be a better alternative.
etudiant is offline  
Reply With Quote

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

Old Tuesday 10th November 2015, 13:14   #10
chordstrummer
Registered User

 
Join Date: Jun 2015
Location: West Yorkshire
Posts: 116
Quote:
Originally Posted by etudiant View Post
The tape idea is a good one. Certainly I too have had trouble with moisture accumulating behind the filter on my scope in wet conditions.
I subsequently ditched the filter in favor of a deep hood, which unfortunately does add to the bulk. A sealed filter might be a better alternative.
Trouble is getting to the filter once it's attached. The hood is in the way so I can't wrap tape around the filter. I don't think the Leica hood is detachable. Does anyone know otherwise?

Etudiant, I too find the hood useful in rainy conditions. The Leica hood is quite deep. I feel a lot more confident using my scope with a filter on though. A scratch on a filter or a cracked filter is no big deal but consider the same on a lens objective. Another consideration being the amount of times my case cover has opened in transit leaving the objective exposed.
That said, anyone buying a lens filter be very cautious. In my experience it seems there are a lot of fakes on the market and some higher end manufacturers seem to have terrible to nonexistent quality control and leave the glass loose in the housing.
chordstrummer is offline  
Reply With Quote
Old Saturday 9th January 2016, 08:35   #11
yves0071
Registered User

 
Join Date: May 2010
Location: paris
Posts: 250
Hi,
I used also a filter on a Leica APO 77. I cannot see any difference sith/without.
It is maybe as it is a genuine UVa Leica Make? (and not any adaptable filter).
Any thoughts?
Regards
Yves
__________________
---BF Member since May 2010---
yves0071 is offline  
Reply With Quote
Old Wednesday 20th January 2016, 23:43   #12
chordstrummer
Registered User

 
Join Date: Jun 2015
Location: West Yorkshire
Posts: 116
Hi Yves. Yes the compatibility of your Leica filter may be because it is Leica.
I am considering buying a Leica filter because everything else i try gives a blurry image.
I cannot explain why a Leica filter should be compatible and others are not. Perhaps someone else could offer an explanation?
I should add that others have found non Leica filters to be compatible with their apo scopes.
chordstrummer is offline  
Reply With Quote
Old Saturday 23rd January 2016, 23:41   #13
Rotherbirder
Registered User

 
Join Date: Aug 2013
Location: South Yorkshire, UK
Posts: 550
The Hoya that I use on my APO62 has no discernible detrimental effect to me but gives me peace of mind in the field.
Rotherbirder is offline  
Reply With Quote
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
Filter ?? rautospoon Spotting Scopes & tripod/heads 16 Monday 25th March 2013 13:57
CPL Filter jimthomson Canon 7 Wednesday 22nd December 2010 19:22
To add a filter or not? Epsomsalt Technique 13 Saturday 20th February 2010 21:41
Filter - UV or not? Mike Johnston Spotting Scopes & tripod/heads 17 Wednesday 14th October 2009 14:30
Filter for APO 77 - which one Rob Smallwood Leica 9 Tuesday 3rd July 2007 06:15

{googleads}
£100 Cashback on Opticron DBA VHD Binoculars. Click to find out more.

Fatbirder's Top 1000 Birding Websites

Help support BirdForum

Page generated in 0.22240090 seconds with 24 queries
All times are GMT. The time now is 08:14.