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Kowa 88mm vs 77mm (1 Viewer)

Mick50

Active member
I was thinking or purchasing a Kowa Spotting Scope in 88mm but noticed the 77mm at a savings of $800. Has anyone compared both size scopes to comment on the price difference and quality of what will be seen? I'm now thinking of the 77mm and putting that extra money to a new pair of binoculars.

My primary use is for hawk watching and shorebirds in mostly stationary birding.

Thanks
 
Hi,

it used to be a non-issue since weight and price of the 77 and 88mm Kowas was not very far apart. With $800 difference that might be reason for a second thought - although, while reviews on the 88mm series are universally good, the 77mm gets more mixed reviews - bf reader Kimmo saw more CA than he liked...

I would probably still try to get the 88m version... maybe used...

Joachim
 
Kowa TSN 880

The performance difference is clear. I would bit the bullet, pay the extra cost and have the best optical spotting scope money can buy. Otherwise you might regret it. KOWA Germany has a very good service too.
KOWA TSN 883 with 25 - 60x W eyepiece is perfect.
 
I was thinking or purchasing a Kowa Spotting Scope in 88mm but noticed the 77mm at a savings of $800. Has anyone compared both size scopes to comment on the price difference and quality of what will be seen? I'm now thinking of the 77mm and putting that extra money to a new pair of binoculars.

My primary use is for hawk watching and shorebirds in mostly stationary birding.

Thanks

Get the 88mm, the better CA control and extra resolution and brightness would be great for hawk watching and long distance shore birds.
 
To be frank: I tried 4 of the 77mm whilst out and about, and the CA was worse than I'd ever expected. I put one down to being a lemon, 2, started to wonder. ..

Then I sat for a day behind the 88mm. It's incomparable. Pay the 800 extra and never regret it.
 
I thought I would put this here to mark how impressive Kowa 883 is :) Photo made with TSN-EX16 + Galaxy S6 + Novagrade adapter.
 

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I thought I would put this here to mark how impressive Kowa 883 is :) Photo made with TSN-EX16 + Galaxy S6 + Novagrade adapter.

Damn. I just ordered the 883 off EO with the 25-60x eyepiece. A bit of a splurge. Looking forward to it.
 
Hi Albert,

I thought I would put this here to mark how impressive Kowa 883 is :) Photo made with TSN-EX16 + Galaxy S6 + Novagrade adapter.

Amazing picture!

Could you please tell me a bit more about how you took this shot, including where you set up the scope, seeing conditions etc.? I would like to try and use my Kowa for some astro shots too ... :)

Many thanks in advance!

Henning
 
Hello Henning :)

The picture was made from a balcony on a Feisol tripod. Seeing conditions were very good. Saturn was above a small town so it could very well be even better taken in some very dark place.

I found out (probably nothing surprising) that lower ISO was better. This image was taken with ISO 100. Shutter speed was automatic with OpenCamera app. I always make a series of 3 photos with 3s delay and 1s delay between each other - it works pretty good. Focus on S6 was set to infinity.

Have fun with your scope!
 
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I used my 883 to show Saturn to my whole family last weekend at a bit of a reunion we had. It was great!

I also went through the "should I go with 773 or 883" concern. I was talked into the 883 by people on BirdForum haha. I never actually was able to try the 773, but I'll say the 883 is awesome. I love it. However, at the time the difference was more like $400, not $800.
 
The 883/4 and 553/4 are the only Kowa scopes with fluorite lens elements. The 770 and 660 series have to make do with ED "XD Prominar" instead, hence the lower performance.
 
Hello,
Then, there is too much differences between the "XD" lens ( maybe a ED lens??? or fpl-51 lens ?? ) and the "fluorite" lens ?? in price so..
Regards,
Wachi
 
I was thinking or purchasing a Kowa Spotting Scope in 88mm but noticed the 77mm at a savings of $800. Has anyone compared both size scopes to comment on the price difference and quality of what will be seen? I'm now thinking of the 77mm and putting that extra money to a new pair of binoculars.

My primary use is for hawk watching and shorebirds in mostly stationary birding.

Thanks

I've just got the 88mm and have it to be amazing, here in the UK Kowa are offering the 1.6 extender foc at present as well.
 
The 883/4 and 553/4 are the only Kowa scopes with fluorite lens elements. The 770 and 660 series have to make do with ED "XD Prominar" instead, hence the lower performance.

We need the word current here... the TSN823/4 and TSN-3/4 had fluorite elements in their objective lenses too, just like the current examples.

Actually using ED in the smaller scopes of the same focal length is a smart decision since the focal ratio of those is slower and thus ED glass can give an equally good image. In the 660 series this works fine. Not sure why the 770 tests went not so well.

Joachim
 
Other than the spelling, there is no difference between Extra-low Dispersion and eXtra-low Dispersion. The choice was made by the chairman of Kowa while he was visiting the US and saw a Viagra commercial with Bob Dole talking about having ED (Erectile Dysfunction). He wanted nothing to do with ED, hence XD. This is a true story told to me by the Kowa product manager at the time.
 
Hi,
I compared side to side a 883 and 773 with both a 25-60 zoom and honestly, i have to say that I have not seen any difference.
The only think is that tat the 883 is a bit more bright at 60x mag compared to the 773, but only during 15-20 minutes before nigth comes (for both scopes!)
Regards
Yves
 
Hi,
I compared side to side a 883 and 773 with both a 25-60 zoom and honestly, i have to say that I have not seen any difference.
The only think is that tat the 883 is a bit more bright at 60x mag compared to the 773, but only during 15-20 minutes before nigth comes (for both scopes!)
Regards
Yves

Yves,

Did you test resolution with a resolution chart? Did you do a test for chromatic aberration? These are where you should see differences during bright daylight.
 
Hi Steve,
No, I tested looking birds and some other details. The resolution test may help to find differences.
I would be surprised if many are visible as Kowa owns, for my point of view, the best techniques to avoid chromatism.
By experience, I have seen much more differences between HD/APO/Fluorite and non ones for Swarovski scopes. (Leica is not too visible), when looking birds.
Can you please indicate a link where I can download the resolution chart?.
Thanks in advance
Yves
 
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