The Sub £50 Lens Guide
Also, it would be interesting to compare at 5.6 and 11 as well. 8 isn't always a lens's best aperture, and for macro I would usually tend to shoot at 11 anyway.
G
The alternative is to use the lenses in the way we would normally use them and form a judgement based on that. If the photography involved was, for example, document copying, then the macro lens would be the obvious choice from the start.
This isn't really a fair comparison. The 50mm f1.4 does not have as flat a field as the 50mm f1.7 and is not suitable for close up work.
This is only the centre John and at this level of detail any OOF can be clearly seen. In fact the edges of the f/1.4 were still in focus.
I actually started this test to check my 300mm lenses at 20x = 6m
It still seemed OK with the 50mm's at 1.25M (25x) which this is. I want to test some 2X converters, but will have to do it outside to get back 12M
Normal accepted distance for resolution testing is 40x, but I haven't got a room big enough for the 300m at 40x (12M)
Most lenses will behave differently at about 30M anyway so any tests are really just a snapshot at the test distance.
Regarding George's question Macro lenses are sharper up to about f/8 f/11 when it becomes difficult to see any difference. Most lenses at f/8 look about the same.
The F 1.7 was sharper than the f/1.4 up to f/8
The A 1.7 was almost identical to the F 1.7 apart from at f/5.6 where it was sharper.
The A 1.4 was almost equal to the F 1.7 and the M 1.7 was only just behind them.
Pentax K-1 + K-5 and some other stuff
Algi
The Pentax-A 28mm f/2.8 came out best but from other tests the Kit Lens is as good if not better.
28mm's Kit lens at f/5.6 - Image by Vivitar A at f/8 - Pentax A f/2.8 at f/8
Test Distance 700mm
Pentax K-1 + K-5 and some other stuff
Algi
the bank note idea sounds good,but ironically i changed my last £10notes to euros last week,so my options are now £20,£50,(all new ones by look of them.any idea if these are as good as the dickens tenner,or do i need to get a dickens tenner from my girlfriends bank.(got the queen side of the twenty up at mo,but again wondering which part of note to pay most attention to (like the rigging example),cheers.nigelxk.
Possibly the Adam Smith side of the £20. You could try the Queens side as well although there does look an awful lot on that side inc. silver strips.
The rear of a £5 note is also OK.
I'm not sure what to look for, I've never photographed the £20
Pentax K-1 + K-5 and some other stuff
Algi
The lens could well have been a 203mm Kodak Extar from the 1950's. Kodak were a top maker then and the Ektars were their best range of lenses, considered by many to be better than German stuff.
Pentax K-1 + K-5 and some other stuff
Algi
Pentax K-1 + K-5 and some other stuff
Algi
Pentax K-1 + K-5 and some other stuff
Algi
to get a idea of distance ,towers in distance are 52 storeys
That's a Tall story..... I don't believe you
I suppose that there's something there you could use maybe the plant on some of the roofs has lettering on it. The 52 storey towers seem to far away and will be affected by atmospheric conditions, but you are better placed to judge that.
Pentax K-1 + K-5 and some other stuff
Algi
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