Perar lens

[jamesk8752]

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Perhaps we should distinguish between vignetting (sharp cutoff at the edge of the image circle) with light falloff (gradual darkening of the image at the corners). The Tachonar image shows the former; the Perar the latter.

 

Regards, Jim

[neli]

A number of points having just received my Perar mkII:

 

1. Once collapsed there is a lot of play in the lens barrel and therefore nothing to stop it sliding in and out with gravity depending on the position of the camera body. The lens cannot be locked down when collapsed.

 

2. Even with the lens barrel extended and twisted to lock, the relatively light pressure required to turn the aperture ring unlocks the lens barrel and causes it to collapse, unless you pull on the ring as turning with just the right amount of pressure.

 

3. The 19 mm B+W filter thread will not mount on the lens and is a bit loose on the lens hood thread. I note they sell 19mm filters.

 

4. Unfortunately there is a smudge on an inner lens surface.

 

 

I've emailed Dirk at JapanExposures who has been very helpful and I'm sending the lens back for cleaning and advice about #2.

 

I should say that despite these issues my initial images with the lens are really nice.

It is very small and light, and well finished.

Except for #2 above, the ergonomics when shooting are fine.

Dirk kindly coded it for me (Summarit 35).

He's been checking the focus calibration for every lens before it goes out and mine was perfect.

 

 

Mark

 

Hi Mark

 

I have the same problem as #2. The lens locked fine for about 2 days, after collapsing twice or three times the barrel became very loose and now the lens is not very usable unless i don't change the aperture and don't swing the camera around too much. Any advice?

 

Many Thanks

 

Cornelius

[MarkP]

Hi Cornelius,

 

yes. Mine is back from Japan exposures to clean a smudge off an inner lens element and to tighten it up. dirk agreed that it as too loose. Much improved. The lens still slips in and out a bit when collapsed (as it can't be locked in this position) but is quite secure when extended and twist-locked. It is recommended that you use more force than you would otherwise think to twist it into a locking position when extended.

 

If you email Dirk and ask him I'm sure he will suggest you send it back for adjustment. He is very helpful.

 

Regards,

Mark

 

 

ps When I get the chance I'll post some comparisons between the Perar and 35 Summilux ASPH (latest version).