seany65
Well-known
Hello all. This post may turn out to be a long (and confusing one 😱), but stick with it and you may be able to help me.
I've just bought A Tamron Adaptall 2 70-150mm f3.5 (20A) lens, and even though I've not got a mount for it yet, I was pleased with it.
I'd bought it as a 'complement' to a Tamron AD2 35-70mm f3.5 (17A) that I plan on getting.
I was then going to get the Tamron AD2 24mm f2.5 (01B).
Simples.
3 things have muddied the water, and muddled my brain.
1) The annoying built-in hood of the 70-150mm (20A) and the way the barrel comes over the the front of the lens when zooming out to anything short of 100mm.
Question: Is there a metal lens hood that is longer than the built-in one and doesn't get in the way of either the built-in lens-hood or the barrel, which would fit? A plastic hood would just about do, if it's longer than the built-in one.
2) I'm not sure I like the focus* ring 'tabs' on the 35-70mm (17A): not enough to get hold of.
Edit: *Zoom.
This made me start thinking of other Tamron lenses. Intitially I decided on the SP 35-80mm F2.8-3.8 (01A), as it seems to have a good reputation. I then thought "If I got the SP 28-80mm f3.5-4.2 (27A), I wouldn't have to buy a 24mm (01B) and so I'd have fewer lenses to carry and fewer filters to buy.
Questions: I've looked at the 'test' data that 'adaptall2.com' has for both and I'd like to ask if anyone knows if there's a noticeable difference in sharpness and contrast between them?
Is the 2.5% barrel distortion at 35mm of the 35-80mm actually noticeable?
How noticeable is the 1.8 stops light fall off (at 5.6) at 28mm, and the 1 stop light fall off (at 5.6) at 80mm of the 28-80mm?
3) I got to thinking about filters, mainly graduated grays, ND filters and the Hoya Red, Green and Blue enhancer filters, and I realised that all three of the 'planned' lenses have different threads: 49mm, 58mm and 55mm respectively.
This made think about the Tamron SP 28-135mm f4-4.5 (28A) and the Tamron 35-135mm f3.5-4.5 (40A).
I've not been able to find any test data for the 28-135mm, and so I can't compare them that way, and the test data for the 35-135mm doesn't mention distortion or light fall off etc.
Questions: I'd like to ask if anyone knows if there's any noticeable difference between the two?
Does either lens have noticecable light fall off?
Does either lens have noticeable distortion?
Does either lens have better sharpness and contrast than the other?
Any help anyone can give would be much appreciated.
I've just bought A Tamron Adaptall 2 70-150mm f3.5 (20A) lens, and even though I've not got a mount for it yet, I was pleased with it.
I'd bought it as a 'complement' to a Tamron AD2 35-70mm f3.5 (17A) that I plan on getting.
I was then going to get the Tamron AD2 24mm f2.5 (01B).
Simples.
3 things have muddied the water, and muddled my brain.
1) The annoying built-in hood of the 70-150mm (20A) and the way the barrel comes over the the front of the lens when zooming out to anything short of 100mm.
Question: Is there a metal lens hood that is longer than the built-in one and doesn't get in the way of either the built-in lens-hood or the barrel, which would fit? A plastic hood would just about do, if it's longer than the built-in one.
2) I'm not sure I like the focus* ring 'tabs' on the 35-70mm (17A): not enough to get hold of.
Edit: *Zoom.
This made me start thinking of other Tamron lenses. Intitially I decided on the SP 35-80mm F2.8-3.8 (01A), as it seems to have a good reputation. I then thought "If I got the SP 28-80mm f3.5-4.2 (27A), I wouldn't have to buy a 24mm (01B) and so I'd have fewer lenses to carry and fewer filters to buy.
Questions: I've looked at the 'test' data that 'adaptall2.com' has for both and I'd like to ask if anyone knows if there's a noticeable difference in sharpness and contrast between them?
Is the 2.5% barrel distortion at 35mm of the 35-80mm actually noticeable?
How noticeable is the 1.8 stops light fall off (at 5.6) at 28mm, and the 1 stop light fall off (at 5.6) at 80mm of the 28-80mm?
3) I got to thinking about filters, mainly graduated grays, ND filters and the Hoya Red, Green and Blue enhancer filters, and I realised that all three of the 'planned' lenses have different threads: 49mm, 58mm and 55mm respectively.
This made think about the Tamron SP 28-135mm f4-4.5 (28A) and the Tamron 35-135mm f3.5-4.5 (40A).
I've not been able to find any test data for the 28-135mm, and so I can't compare them that way, and the test data for the 35-135mm doesn't mention distortion or light fall off etc.
Questions: I'd like to ask if anyone knows if there's any noticeable difference between the two?
Does either lens have noticecable light fall off?
Does either lens have noticeable distortion?
Does either lens have better sharpness and contrast than the other?
Any help anyone can give would be much appreciated.