Home
SearchSearch MemberlistMemberlist RegisterRegister ProfileProfile Log in to check your private messagesLog in to check your private messages Log inLog in

[AF] Tamron AUTOFOCUS Adaptall-2 70-210mm zoom (47a)
View previous topic :: View next topic  


PostPosted: Tue Jun 08, 2010 10:57 pm    Post subject: [AF] Tamron AUTOFOCUS Adaptall-2 70-210mm zoom (47a) Reply with quote

These are pics of the lens and from the lens.

They are straight from camera (test shots) with NO PP whatsoever other than that applied in-camera as they are JPGs and resizing to abide by forum rules...

In the flower set the point of focus was the leading petal on the iris, on the truck photos it was the right hand edge of the spare tire carrier.

I noticed some CA (purple fringing) on the tire carrier along the upper edge, even at f8 and the light was overcast and not too contrasty.. otherwise the lens seems fine as an optical device and the focus seems quite reasonable, smooth and accurate?

Doug










Iris test pictures



47a f4 at 3 meters iso 100


47a f5.6 at 3 meters iso 100



47a f9.5 at 3 meters iso 100



PostPosted: Tue Jun 08, 2010 11:11 pm    Post subject: Tamron 47a using zoom Reply with quote

All pics resized (downsized 50% using bicubic) to adhere to forum posting policies.

First at 70mm:

f4.5 at 70mm from 6 meters



f8 at 70mm from 6 meters




f4.5 at 210mm from 6 meters



f8 at 210mm from 6 meters



PostPosted: Tue Jun 08, 2010 11:19 pm    Post subject: Reply with quote

Pretty nice result from a very unique lens, thank you for sharing!


PostPosted: Thu Jul 01, 2010 6:08 pm    Post subject: Reply with quote

I'm surprised that there is a sticker on this lens. That implies it was made before 1990! Therefore, this lens should be in the adaptall-2.org site but isn't . . . yet.


PostPosted: Thu Jul 01, 2010 7:12 pm    Post subject: Reply with quote

I am very grad when I saw the long lost sibling ie. Tamron 47a for my PRAKTICAR(s).

Here is mine>
This one is closer to the original 47a, I guess. It has power zoom too, but cannot do this at the same time with AF.


This lens starts AF automatically whenever I half-press the shutter button of any PRAKTICA PB camera.
The circuit of this lens senses the electric current in the camera through three electric contacts on the lens, which is used for aperture.

A sample shot at F5.6 & 200mm end, looks surprisingly good with Canon 5D + AF55-200/4.5.


I have long suspected these lenses were made by Tamron, now it has been proved. Cool


Last edited by koji on Thu Jul 01, 2010 11:21 pm; edited 1 time in total


PostPosted: Thu Jul 01, 2010 10:23 pm    Post subject: Reply with quote

Ha ha

Are you implying my lens has illegitimate siblings?

I am amazed and dismayed.. I always though they were well brought up!

lol

Doug

koji wrote:
I am very grad when I saw the long lost sibling ie. Tamron 47a for my PRAKTICAR(s).

Here is mine>
This one is closer to the original 47a, I guess.


This lens starts AF automatically whenever I half-press the shutter button of any PRAKTICA PB camera.

A sample shot at F5.6 & 200mm end, looks surprisingly good with Canon 5D + AF55-200/4.5.


I have long suspected these lenses were made by Tamron, now it has been proved. Cool