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08-27-2016, 01:57 PM   #8371
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I just got a Nikon D40 and a Sigma 50mm f/2,8 macro for Nikon for a total of 25$. I will sell the lens, but don't know what to do with the camera (unsellable?).

08-27-2016, 03:41 PM - 1 Like   #8372
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A new control board for my Sigma 70-200 HSM II. One trip in to Sigma to swap the mount and a second trip for the board and now it will actually focus on the K1 instead of freezing the body. Hopefully this means my 120-400 will reappear next week. Both lenses have been out of service since May.
08-27-2016, 03:46 PM   #8373
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QuoteOriginally posted by Simen1 Quote
I just got a Nikon D40 and a Sigma 50mm f/2,8 macro for Nikon for a total of 25$. I will sell the lens, but don't know what to do with the camera (unsellable?).
"unsellable"

EDIT: I picked up this Minolta MD 35mm f/2.8 on Ebay a couple of minutes ago (39€ + shipping), I'm pretty sure it's going to replace my MD35/1.8. I don't use 35mm much so I can't really justify keeping the 1.8 (it's selling for pretty hefty prices right now...). The 35/1.8's aperture ring jumps from f/1.8 right to f/2.8 (why, Minolta, why?) and the 2.8 is going to be sharper from f/2.8 onwards anyway.
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Last edited by Boris_Akunin; 08-27-2016 at 04:03 PM.
08-27-2016, 10:54 PM   #8374
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QuoteOriginally posted by Boris_Akunin Quote
"unsellable"

EDIT: I picked up this Minolta MD 35mm f/2.8 on Ebay a couple of minutes ago (39€ + shipping), I'm pretty sure it's going to replace my MD35/1.8. I don't use 35mm much so I can't really justify keeping the 1.8 (it's selling for pretty hefty prices right now...). The 35/1.8's aperture ring jumps from f/1.8 right to f/2.8 (why, Minolta, why?) and the 2.8 is going to be sharper from f/2.8 onwards anyway.
Maybe that is why they are not there to answer your question any more.

08-28-2016, 12:49 AM   #8375
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QuoteOriginally posted by Boris_Akunin Quote
"unsellable"

EDIT: I picked up this Minolta MD 35mm f/2.8 on Ebay a couple of minutes ago (39€ + shipping), I'm pretty sure it's going to replace my MD35/1.8. I don't use 35mm much so I can't really justify keeping the 1.8 (it's selling for pretty hefty prices right now...). The 35/1.8's aperture ring jumps from f/1.8 right to f/2.8 (why, Minolta, why?) and the 2.8 is going to be sharper from f/2.8 onwards anyway.
I have an older Minolta 35/2.8 (the MC W.Rokkor) which I haven't used on film yet but I have tried it on my Fujifilm X-M1 and it's incredibly sharp wide open, so if it's the same optical formula then you're in for a treat.
08-28-2016, 06:02 AM   #8376
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QuoteOriginally posted by Jonathan Mac Quote
I have an older Minolta 35/2.8 (the MC W.Rokkor) which I haven't used on film yet but I have tried it on my Fujifilm X-M1 and it's incredibly sharp wide open, so if it's the same optical formula then you're in for a treat.
If yours says W.Rokkor and not W.Rokkor-HG, it's the same 5/5 formula. Minolta kept improving it thought so the "plain MD" version is even better (and the smallest but the focus ring probably isn't as smooth as on the older MC's):







(shot on a Sony NEX-5N (APS-C, 16MP), source: artaphot.ch, a great source for the Minolta lenses)

It doesn't look too shabby compared to the Sony/Zeiss Sonnar FE 35/2.8 either:






(shot on a Sony A7RII, source: artaphot.ch again)

The Canon nFD 35/2.8 and 35/2 could probably put up a good fight:
Canon FDn 35mm f/2.8 on Sony A7
Canon FDn 35mm f/2 on Sony A7

I think I might have to try those too...

Last edited by Boris_Akunin; 08-28-2016 at 07:22 AM.
08-28-2016, 06:17 AM   #8377
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Interesting that the corner IQ of the 1981 version of the MD f2.8 wide open is significantly superior to that of the f1.8 stopped down to f2.8, and the center is at least as good as well.
08-28-2016, 07:03 AM   #8378
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QuoteOriginally posted by WPRESTO Quote
Interesting that the corner IQ of the 1981 version of the MD f2.8 wide open is significantly superior to that of the f1.8 stopped down to f2.8, and the center is at least as good as well.
Making a 35/1.8 at this size probably entailed some compromises that weren't necessary for the 35/2.8.

08-28-2016, 07:07 AM   #8379
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Among fixed focal length lens models the slower one is often the better performer.
IMO the real reason to buy the faster lens is a brighter image for easier SLR focusing.

Chris
08-28-2016, 10:32 AM   #8380
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QuoteOriginally posted by ChrisPlatt Quote
Among fixed focal length lens models the slower one is often the better performer.
IMO the real reason to buy the faster lens is a brighter image for easier SLR focusing.

Chris
I will take minor exception to that. Looking through tests that give a sort of "final number" for lens performance, or some value for resolution, (DxOMark for example), I find that, for examples, f1.4 50mm outperforms f2.0~1.8; 85mm f1.4 outperforms 85mm f1.8; 200mm f2.0 outperforms 200mm f2.8 outperforms 200mm f4.0; 300mm f2.8 outperforms 300mm f4; and 70~200mm f2.8 zooms outperform similar zoom range lenses with variable apertures that start typically at f4. Pentax 100mm f2.8 macros were always rated higher than the now discontinued 100mm f4 macro. The Pentax 135mm f1.8 is/was regarded as better than the f2.8 which was regarded as better than the long discontinued 135mm f3.5. Stay within one manufacturer, or compare Nikon against Canon against Pentax against Zeiss against Fuji etc.Exceptions? Of course, but I find that in the majority of cases a wider aperture lens is rated higher than a smaller aperture lens of the same FL. It has never made sense to me
08-28-2016, 11:27 AM   #8381
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QuoteOriginally posted by WPRESTO Quote
I will take minor exception to that. Looking through tests that give a sort of "final number" for lens performance, or some value for resolution, (DxOMark for example), I find that, for examples, f1.4 50mm outperforms f2.0~1.8; 85mm f1.4 outperforms 85mm f1.8; 200mm f2.0 outperforms 200mm f2.8 outperforms 200mm f4.0; 300mm f2.8 outperforms 300mm f4; and 70~200mm f2.8 zooms outperform similar zoom range lenses with variable apertures that start typically at f4. Pentax 100mm f2.8 macros were always rated higher than the now discontinued 100mm f4 macro. The Pentax 135mm f1.8 is/was regarded as better than the f2.8 which was regarded as better than the long discontinued 135mm f3.5. Stay within one manufacturer, or compare Nikon against Canon against Pentax against Zeiss against Fuji etc.Exceptions? Of course, but I find that in the majority of cases a wider aperture lens is rated higher than a smaller aperture lens of the same FL. It has never made sense to me
Notice what all your example have in common? Large differences in retail pricing. Sure, part of that is due to the higher production numbers of the slower/cheaper lenses but the faster lenses are often made with more cost/effort (more complex designs, special glas shapes/types, more work put into optimising the design). The Pentax K28/3.5 will outperform most of Pentax' 28/2.8's (I'm not quite sure about the -F & -FA versions) and fares quite well against the -M & -K 28/2.
Of course, the K28/2 and M28/2 are (and were, when they were new) a lot more expensive - same goes for 200/2 vs 200/2.8, 85/1.4 vs 85/1.8 and 135/1.8 vs 135/2.8.

With the same amount of effort put into either lens, a slow lens design will likely outperform a faster one at the shared apertures but that rarely happens.

Last edited by Boris_Akunin; 08-28-2016 at 03:19 PM.
08-28-2016, 11:44 AM   #8382
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I got SuperTak 50mm on ebay, which seems to be 8 elements. At least the picture and serial number showed that.
Want to compare with 7 elements on my own.
08-28-2016, 12:13 PM   #8383
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QuoteOriginally posted by micromacro Quote
I got SuperTak 50mm on ebay, which seems to be 8 elements. At least the picture and serial number showed that.
Want to compare with 7 elements on my own.
Can you see the DOF scale in the pictures?
Super-Takumar 50mm F1.4 (8-element variant) Reviews - M42 Screwmount Normal Primes - Pentax Lens Reviews & Lens Database
08-28-2016, 02:55 PM   #8384
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QuoteOriginally posted by Boris_Akunin Quote
Can you see the DOF scale in the pictures?
Do you mean on pictures of the lens? Yes I can.
I will copy the picture from ebay page.

Here, just ignore PK-EOS adapter there.
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Last edited by micromacro; 08-28-2016 at 03:02 PM. Reason: pictures
08-28-2016, 03:15 PM   #8385
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QuoteOriginally posted by micromacro Quote
Do you mean on pictures of the lens? Yes I can.
I will copy the picture from ebay page.

Here, just ignore PK-EOS adapter there.
Yep, that's the 8 element version.
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