PQ difference between coded/non-coded 90 apo cron asp

[lensblur]

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Hi,

 

I am looking to get a M90mm lens to use with M8. There is one non-coded 90 apo cron asp in stock at the local shop. I wonder if using this uncoded lens will differ from using it coded on the M8, esp in terms of image quality.

 

Thank you in advance,

 

VB (Lensblur)

[colorflow]

I have this lens uncoded. I decided not to code it since there have been several threads here regarding coding of longer lenses - no real need. There is no noticeable vignetting or cyan cast with the IR filter. One thing though - I find this lens difficult to focus at wide apertures especially closer in ( say 12 ft 0r less). Not sure whether it's just me, my particular lens, or... Vaguely remember someone else mentioning this at this forum.

 

Alan

[sean_reid]

It should be fine. As the above post says, the lens won't vignette very much and cyan drift is not an issue with a 90. You can also get it coded later if you decide to.

 

Cheers,

[thpeters]

I have this lens uncoded. I decided not to code it since there have been several threads here regarding coding of longer lenses - no real need. There is no noticeable vignetting or cyan cast with the IR filter. One thing though - I find this lens difficult to focus at wide apertures especially closer in ( say 12 ft 0r less). Not sure whether it's just me, my particular lens, or... Vaguely remember someone else mentioning this at this forum.

 

Alan

 

Yes I have the same lens, and it is very tricky to get it good focus for short distance.

But it is a great lens and it gives great results, I have posted some pictures from tulips in the nature photoforum.

 

Theo

[marknorton]

Definitely recommend using a finder magnifier with 90's...

[glenerrolrd]

The 90 is a good test of your focus accuracy.(1) You might want to test your camera and lens combination to see if you have an accurate rangefinder. (2) the magnifiers and diopters can make a big difference in your ability to focus (3) I found I had to work a little more on my technique to pick a focal point that provides best results. Many of the M8 s show some modest back focusing ...adjusting to focus on the bridge of the nose can pull it forward just enough on my M8 . Lots written on the coding of the longer lenses...I just sent my ASPH in because I also wanted it tested for rangefinder accuracy.

[lensblur]

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I used to use 90 f/2 (before apo) a lot with M6, and it was one of my favourite lenses. With the M8, it seems to be a bit like 135 f/2.8 that comes with gogles.(!?), so without the magnifier, focusing can be a challenge.

 

Perhaps 70 f/2 on M8 is more like 90 f/2 on a film body???

[Shootist]

Lensblur if you are in the USA and that un-coded 90mm is new, NOT USED, and comes with the warranty card and you buy it before June 30 2007 and send in the warranty card to Lieca NJ before that date you will get 2 vouchers for free lens coding.

[lensblur]

Shootist,

 

I am thinking of getting one, but I am not in the US. I am in Hong Kong. Now I am weighting between 75 and 90...

 

Thank you

 

VB

[Shootist]

Don't do that to yourself. Sell whatever you need to or borrow/beg the money to get both.

 

You do know that as soon as you make the choice of one over the other you will wish you had the other.

Just go out and buy all the focal lengths. WATE, 24 ASPH, 28 ASPH (2.8 or 2), 35 ASPH, 50 of your choice (Mine was the f/2), 75 APO, 90 APO and a older version 2 135 with eyes or the newer f/3.4 APO.