CONTAX 645 Lens list

List of the Contax 645 lens and summary of lens information

Lens spec 1 / wide angle, standard lens

The widest-angle lens of the CONTAX645, 35mm, has a magnification of 0.6x for 645 format (film size 6cm x 4.5cm), so when used with the CONTAX 645, it is equivalent to 21mm.
The Hasselblad H lens also covers 6×6 format (film size 6cm x 6cm) up to 35mm, and the 28mm and 24mm lenses, which are wider than the 35mm H lens, are for 44x33mm sensors (0.8x magnification).
The Hasselblad V lens also has a widest angle of 40mm, except for special fisheye lenses.
Other wide-angle lenses include the 28mm Phase One and the 33mm PENTAX, but as far as the specifications are concerned, they are compatible with 44x33mm sensors (0.8x magnification).
The 45mm lens is sometimes available at a low price, probably because it is widely available on the market.
The 55mm was positioned as a low-cost lens when it was released, but since there is little circulation, it has remained stable at a high price.
The 80mm is widely available, but has remained stable at a high price, probably because of its F2 specs.
The Vario-Sonnar zoom lens is a lens that is rarely seen and is relatively expensive.

Telephoto lenses come in a range of focal lengths from 120mm to 350mm, which is essential for normal photography.
Except for the Tele Apo Tessar, the rest of the lenses are inexpensive and well worth owning.
Lens with a focal length of 140mm or more can be fitted with a teleconverter to extend the focal length by 1.4 times.

Lens name	APO MAKRO PLANAR	SONNAR	←	Tele Apotessar	Mutar
Focal length(mm)	120	140	210	350	x1.4
Max aperture	4	2.8	4	4	–
Min aperture	45	32	32	45	–
Lens Construction	8elements in 5groups	7elements in 5groups	7elements in 4groups	9elements in 8groups	7elements in 5groups
Min distance(m)	0.3	1.3	1.4	1.9	–
Focus type	MF	AF	←	←	←
Lens length(mm)	104	98	177	273	41
Max diameter(mm)	86	81	81	114	82
Filter Size(mm)	72	72	72	95	–
Mutar x1.4	×	○ 196mm	○ 294mm	○ 490mm	–
Lens hood	GB-73	GB-73	GB-74	GB-102	–
Weight(g)	796	688	1178	3610	510
Release date	1999	1999	1999	2000	1999
Price(Yen/No-tax)	270,000	245,000	250,000	670,000	120,000
Official PDF	Official PDF	Official PDF	Official PDF	Official PDF	Official PDF
Other link	Apo Makro Planar 120mm ZEISS lens etc	Sonnar 140mm F2.8	Sonnar 210mm F4	Camera naniwa Ganjin camera	Mutar x1.4

Planar 80mm F2
- At its lowest price, the 80mm could be purchased for around 100,000 yen, but after hesitating, it has become commonplace to sell for over 300,000 yen.
- Since I own a Hasselblad HC100mm and a Leica Summicron S 100mm, I have no plans to purchase one at the moment.
Tele Apo Tessar 350mm
- I have seen it at second-hand stores several times, but I have not purchased it due to its weight and frequency of use. Even after reading the reviews at the linked page, I do not think it is a lens that will be used frequently, which makes me hesitate to purchase it.
- If someone could lend me a lens they own, I would not hesitate to attach it to my LEICA S and go to Tokyo Bay Wild Bird Park to take pictures. However, it seems very difficult to move around with it.